CONEXANT CX20431-21 Accessrunner adsl-usb modem device set Datasheet

AccessRunner ADSL-USB
Modem Device Set
Scalable, Discrete Multitone-based, T1.413 Issue 2, G.992.1
(G.dmt), and G.992.2 (G.lite) - Compliant ADSL Modem
Device Set
Data Sheet
Conexant Proprietary Information
Doc. No. 100427B
May 4, 2000
AccessRunner ADSL-USB Modem Device Set Data Sheet
Revision History
Revision
Date
Comments
A
1/27/2000
Initial release
B
5/4/2000
Added hardware interface tables and host interface description.
© 2000, Conexant Systems, Inc.
All Rights Reserved.
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omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant
makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from
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ii
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Contents
1.
Introduction ....................................................................................................................................................... 1-1
1.1
1.2
1.3
1.4
2.
System Description........................................................................................................................................... 2-1
2.1
2.2
2.3
3.
General Description.................................................................................................................................. 2-1
2.1.1
Boot ROM and Power Up Procedure ......................................................................................... 2-1
2.1.2
Serial EEPROM Programming Utility ......................................................................................... 2-1
ADSL Operation ....................................................................................................................................... 2-1
2.2.1
ADSL Operating Modes ............................................................................................................. 2-1
Full Rate ADSL Modes...................................................................................................... 2-1
G.lite Splitterless Mode ..................................................................................................... 2-1
LAN Mode ......................................................................................................................... 2-1
WAN Mode........................................................................................................................ 2-1
2.2.2
Host Software............................................................................................................................. 2-2
2.2.3
Control Panel ............................................................................................................................. 2-2
2.2.4
Installation Wizard ..................................................................................................................... 2-2
Device Description ................................................................................................................................... 2-2
2.3.1
P5200 UIC Description............................................................................................................... 2-2
ARM Processor ................................................................................................................. 2-2
External Memory Controller............................................................................................... 2-2
Host Interface.................................................................................................................... 2-3
ADSL Interface.................................................................................................................. 2-3
USB Interface.................................................................................................................... 2-3
LED Interface .................................................................................................................... 2-3
EEPROM Interface............................................................................................................ 2-3
General Purpose Input/Output Interface ........................................................................... 2-3
2.3.2
CX11627 ADDP Description ...................................................................................................... 2-4
ATM Transmission Convergence ...................................................................................... 2-4
Digital Interface ................................................................................................................. 2-4
QAM Encoder/Decoder ..................................................................................................... 2-4
FFT.................................................................................................................................... 2-4
Analog Front End Interface ............................................................................................... 2-4
Microcontroller Interface.................................................................................................... 2-4
2.3.3
CX20431 AFE Description ......................................................................................................... 2-5
2.3.4
CX20441 LD Description............................................................................................................ 2-6
Hardware Interface............................................................................................................................................ 3-1
3.1
3.2
3.3
100427B
Overview................................................................................................................................................... 1-1
Applications .............................................................................................................................................. 1-1
Features ................................................................................................................................................... 1-3
1.3.1
P5200 USB Interface Controller Features.................................................................................. 1-3
1.3.2
CX11627 ADSL DMT Data Pump Features ............................................................................... 1-3
1.3.3
CX20431 ADSL Analog Front End Features.............................................................................. 1-4
1.3.4
CX20441 ADSL Line Driver Features ........................................................................................ 1-4
Reference Design..................................................................................................................................... 1-4
P5200 UIC Hardware Interface Signals.................................................................................................... 3-1
3.1.1
P5200 UIC Signal Interface, Pin Assignments, and Signal Definitions ...................................... 3-1
P5200 UIC Electrical and Environmental Specifications .......................................................................... 3-8
CX11627 ADDP Hardware Interface Signals ......................................................................................... 3-10
3.2.1
CX11627 ADDP Hardware Signals, Pin Assignments, and Signal Definitions ........................ 3-10
3.2.2
CX11627 ADDP Electrical and Environmental Specifications ................................................. 3-17
CX20431 AFE Hardware Interface Signals ............................................................................................ 3-19
3.3.1
CX20431 AFE Hardware Signals, Pin Assignments, and Signal Definitions ........................... 3-19
3.3.2
CX20431 AFE Electrical and Environmental Specifications .................................................... 3-22
Conexant
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AccessRunner ADSL-USB Modem Device Set Data Sheet
3.4
4.
USB General Operation .................................................................................................................................... 4-1
4.1
5.
iv
CX20441 LD Hardware Interface Signals............................................................................................... 3-24
3.4.1
CX20441 LD Hardware Signals, Pin Assignments, and Signal Definitions.............................. 3-24
3.4.2
CX20441 LD Electrical and Environmental Specifications....................................................... 3-27
Descriptors ............................................................................................................................................... 4-1
4.1.1
Device Descriptor....................................................................................................................... 4-1
4.1.2
Configuration Descriptor ............................................................................................................ 4-3
4.1.3
Interface Descriptor.................................................................................................................... 4-4
4.1.4
Endpoint Descriptor ................................................................................................................... 4-5
4.1.5
Enumeration............................................................................................................................... 4-6
4.1.6
Endpoint Pairs............................................................................................................................ 4-6
4.1.7
Language ID Table..................................................................................................................... 4-6
4.1.8
Manufacturer String Table.......................................................................................................... 4-6
4.1.9
Product ID String Table.............................................................................................................. 4-7
4.1.10 Serial Number String Table........................................................................................................ 4-8
Package Dimensions ........................................................................................................................................ 5-1
Conexant
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AccessRunner ADSL-USB Modem Device Set Data Sheet
Figures
Figure 1-1. AccessRunner ADSL-USB Modem Device Set Simplified Hardware Interface...................................................... 1-1
Figure 1-2. AccessRunner ADSL-USB Modem Device Set Major Interfaces ........................................................................... 1-2
Figure 2-1. P5200 UIC Block Diagram ..................................................................................................................................... 2-3
Figure 2-2. CX11627 ADDP Block Diagram ............................................................................................................................. 2-4
Figure 2-3. CX20431 AFE Block Diagram ................................................................................................................................ 2-5
Figure 2-4. CX20441 LD Block Diagram .................................................................................................................................. 2-6
Figure 3-1. P5200 UIC Hardware Interface Signals ................................................................................................................. 3-2
Figure 3-2. P5200 UIC Pin Signals-176-Pin TQFP................................................................................................................... 3-3
Figure 3-3. CX11627 ADDP Hardware Interface Signals ....................................................................................................... 3-11
Figure 3-4. CX11627 ADDP Pin Signals - 176-Pin TQFP ...................................................................................................... 3-12
Figure 3-5. CX20431 AFE Hardware Interface Signals .......................................................................................................... 3-19
Figure 3-6. CX20431 AFE Pin Signals - 32-Pin TQFP ........................................................................................................... 3-19
Figure 3-7. CX20441 LD Hardware Interface Signals ............................................................................................................ 3-25
Figure 3-8. CX20441 LD Pin Signals - 32-Pin TQFP.............................................................................................................. 3-25
Figure 5-1. Package Dimensions - 176-Pin TQFP ................................................................................................................... 5-1
Figure 5-2. Package Dimensions - 32-Pin TQFP ..................................................................................................................... 5-2
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AccessRunner ADSL-USB Modem Device Set Data Sheet
Tables
Table 1-1. AccessRunner ADSL-USB Modem Device Set Models and Part Numbers ............................................................ 1-2
Table 3-1. P5200 UIC Hardware Signal Definitions.................................................................................................................. 3-4
Table 3-2. P5200 UIC Input/Output Type Descriptions ............................................................................................................ 3-7
Table 3-3. P5200 UIC DC Electrical Characteristics ................................................................................................................ 3-8
Table 3-4. P5200 UIC Operating Conditions ............................................................................................................................ 3-9
Table 3-5. P5200 UIC Absolute Maximum Ratings .................................................................................................................. 3-9
Table 3-6. P5200 UIC Power Consumption.............................................................................................................................. 3-9
Table 3-7. CX11627 ADDP Hardware Signal Definitions ....................................................................................................... 3-13
Table 3-8. CX11627 ADDP Input/Output Type Descriptions .................................................................................................. 3-16
Table 3-9. CX11627 ADDP DC Electrical Characteristics ...................................................................................................... 3-17
Table 3-10. CX11627 ADDP Operating Conditions................................................................................................................ 3-18
Table 3-11. CX11627 ADDP Absolute Maximum Ratings ...................................................................................................... 3-18
Table 3-12. CX11627 ADDP Power Consumption ................................................................................................................. 3-18
Table 3-13. CX20431 AFE Hardware Signal Definitions ........................................................................................................ 3-20
Table 3-14. CX20431 AFE Input/Output Type Descriptions ................................................................................................... 3-21
Table 3-15. CX20431 AFE DC Electrical Characteristics ....................................................................................................... 3-22
Table 3-16. CX20431 AFE Analog Electrical Characteristics................................................................................................. 3-22
Table 3-17. CX20431 AFE Operating Conditions................................................................................................................... 3-23
Table 3-18. CX20431 AFE Absolute Maximum Ratings......................................................................................................... 3-23
Table 3-19. CX20431 AFE Power Consumption .................................................................................................................... 3-23
Table 3-20. CX20441 LD Hardware Signal Definitions........................................................................................................... 3-26
Table 3-21. CX20441 LD Input/Output Type Descriptions ..................................................................................................... 3-26
Table 3-22. CX20441 LD Analog Electrical Characteristics ................................................................................................... 3-27
Table 3-23. CX20441 LD Operating Conditions ..................................................................................................................... 3-27
Table 3-24. CX20441 LD Absolute Maximum Ratings ........................................................................................................... 3-27
Table 3-25. CX20441 LD Power Consumption....................................................................................................................... 3-27
Table 4-1. Device Descriptors .................................................................................................................................................. 4-2
Table 4-2. Configuration Descriptors........................................................................................................................................ 4-3
Table 4-3. Interface Descriptors ............................................................................................................................................... 4-4
Table 4-4. Endpoint Descriptors ............................................................................................................................................... 4-5
Table 4-5. Endpoint Pairs ......................................................................................................................................................... 4-6
Table 4-6. Language ID Table.................................................................................................................................................. 4-6
Table 4-7. Manufacturer String Table ....................................................................................................................................... 4-6
Table 4-8. Product ID String Table ........................................................................................................................................... 4-7
Table 4-9. Serial Number String Table ..................................................................................................................................... 4-8
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AccessRunner ADSL-USB Modem Device Set Data Sheet
1.
Introduction
1.1
Overview
The Conexant AccessRunner ADSL-USB Modem Device Set combines an “always-on” high speed Asymmetric Digital
Subscriber Line (ADSL) connection to the telephone line, and Universal Serial Bus (USB) connection to a host PC into a
single cost-effective solution.
Conexant’s AccessRunner ADSL modem device set is compliant with the full-rate ANSI T1.413 Issue 2 and ITU G.dmt
(G.992.1) ADSL standards, and with the splitterless ITU G.lite (G.992.2) specification. This rate-adaptive solution is designed
for Customer Premise Equipment and supports downstream data rates of up to 8 Mbps and upstream data rates of up to 1
Mbps.
The device set takes advantage of the processing power available with today’s computers by eliminating the need for a
separate ATM Segmentation and Reassembly (SAR) device, resulting in a cost-effective solution suitable for both full rate and
G.lite applications. Additionally, host-based software provides support for current industry standards for PPP over ATM (RFC
2364) and bridged Ethernet over ATM (RFC 1483) for Windows 98 and Windows 2000.
The USB specification version 1.1 is supported and is the preferred standard method to connect peripherals to PCs.
During periods of no data transmission, the Conexant ADSL DMT data pump performs idle cell insertion and deletion thus
unloading this task from the host PC.
The device set consists of four devices (see Figure 1-1 and Figure 1-2):
• USB Interface Controller (UIC), part no. P5200, in a 176-pin TQFP
• ADSL DMT Data Pump (ADDP), part no. CX11627, in a 176-pin TQFP
• Analog Front End (AFE), part no. CX20431, in a 32-pin TQFP
• Line Driver (LD), part no. CX20441, in a 32-pin TQFP
ADSL (Asymmetric Digital Subscriber Line) is a transmission technology used to carry user data over a single twisted pair line
between the Central Office and the Customer Premises. The downstream (Central Office to Customer Premises) direction
typically supports a much higher data rate than the upstream or return (Customer Premises to Central Office) channel. This
asymmetric nature lends itself to applications like remote LAN access, Internet access, and video delivery. The downstream
data rates can go up to 8 Mbps. The upstream data rates can go up to 1 Mbps. Actual data rates depend on the transceiver
implementation, loop length, impairments, and transmitted power.
The Conexant ADSL-USB Modem Device Set is based upon a scalable architecture. This architecture enables the device set
to support splitterless G.lite as well as splittered and splitterless full-rate ADSL. G.lite enables telephone companies to deploy
consumer-oriented, “always on” 1.5 Mbps Internet access services without the need for splitter equipment, micro-filters, or
wiring changes at the customer premises.
1.2
Applications
• ADSL Customer Premise Equipment
• ADSL USB modems for desktop PCs
• ADSL USB modems for notebook PCs
Host-Based
ADSL
Drivers
USB
Interface
P5200
USB Interface
Controller
(UIC)
176-Pin TQFP
CX11627
ADSL DMT
Data Pump
(ADDP)
176-Pin TQFP
CX20431
Analog Front End
(AFE)
32-Pin TQFP
CX20441
Line Driver
(LD)
32-Pin TQFP
TIP
RING
TELEPHONE LINE
Device Set
100428_F1-1_SID
Figure 1-1. AccessRunner ADSL-USB Modem Device Set Simplified Hardware Interface
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AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 1-1. AccessRunner ADSL-USB Modem Device Set Models and Part Numbers
Model/Order/Part Numbers
Marketing Name
AccessRunner ADSL-USB
Modem Device Set
Device Set Order No.
USB Interface
Controller (UIC)
[176-pin TQFP]
Part No.
ADSL DMT Data Pump
(ADDP)
[176-pin TQFP]
Part No.
Analog Front End
(AFE)
[32-pin TQFP]
Part No.
Line Driver
(LD)
[32-pin TQFP]
Part No.
DSAR-L100-501
P5200-12
CX11627-11
CX20431-21
CX20441-11
Conexant ADSL-USB Modem Device Set
CX11627
ADSL DMT
Data Pump
(ADDP)
176-Pin TQFP
CX20431
Analog Front End
(AFE)
32-Pin TQFP
CX20441
Line Driver
(LD)
32-Pin TQFP
Telephone
Line
TIP
RING
Host Computer
SDRAM/SRAM
Required: 2Mbit
Operating System
Software and
Modem
Communication
Application
Software
ADSL
Software
Drivers
USB
Interface
P5200
USB Interface
Controller
(UIC)
176-Pin TQFP
SDRAM Options
One 1M x 16 = 2 MB,
Two 2M x 8 = 4 MB, or
One 4M x 16 = 8 MB
Refresh Rate: 15.625 us
SRAM Options
One 128k x 16 = 2 Mbit or
Two 128k x 8 = 2 Mbit
Access Time: 15 ns
External
Components
EEPROM
JTAG Interface
LEDS
Reset Circuit
100428_F1-2_FID
Figure 1-2. AccessRunner ADSL-USB Modem Device Set Major Interfaces
1-2
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AccessRunner ADSL-USB Modem Device Set Data Sheet
1.3
Features
• Complete ADSL-USB solution
• Compliant with ADSL standards
− Full-rate ANSI T1.413 Issue 2 and ITU G.dmt (G.992.1) standards
− Splitterless ITU G.lite (G.992.2) specification
• DMT modulation and demodulation
• Full-rate adaptive modem
− Maximum downstream rate of 8 Mbps
− Maximum upstream rate of 1 Mbps
• Supports splitterless ADSL implementation
• WAN mode support: PPP over ATM (RFC 2364)
• LAN mode support: bridged Ethernet over ATM (RFC 1483)
• Tone detection for low power mode
• USB host interface
− Compliant with USB Specification, Revision 1.1
− USB full speed (12 Mbps)
− Suspend/Resume
− Vendor specific descriptors
− Bus powered USB device
• ATM SAR performed in software driver
1.3.1
P5200 USB Interface Controller Features
• CX11627 ADSL DMT Data Pump (ADDP) interface
• CX20431 ADSL Analog Front End (AFE) interface
• CX20441ADSL Line Driver (LD) interface
• Internal USB interface
• SDRAM/SRAM interface
• LED interface
• Serial EEPROM interface
• JTAG interface
• 176-pin TQFP
1.3.2
CX11627 ADSL DMT Data Pump Features
• Low power (0.5W) consumption
• DSP-based programmable ADSL data pump
• No external Interleave RAM, 16 Kbytes built-in
• Echo cancellation
• Digital interface and rate buffering
• ADSL framing
• Forward Error Correction (FEC) encoding and decoding and interleaving
• Constellation encoding/decoding
• IFFT modulation and FFT demodulation
• Transmit and receive signal digital filtering
• Time domain equalization
• Frequency domain equalization
• Clock recovery
• CRC and scrambling
• Digital interface framing
• ATM mode
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AccessRunner ADSL-USB Modem Device Set Data Sheet
• Bit-synchronous mode
• 176-pin TQFP
1.3.3
CX20431 ADSL Analog Front End Features
• Receive signal path includes:
− Integrated hybrid receiver circuit with programmable gain
− High pass filtering and 27dB of Automatic Gain Control (AGC) to improve signal-to-echo ratio
− 14-bit ADC
• Transmit signal path includes:
− 30dB of AGC for transmit power control
− Low pass filtering to suppress noise in the receive band
− 14-bit DAC
• Independent digital serial data and control interfaces
• Low power tone detection mode
• 32-pin TQFP
1.3.4
CX20441 ADSL Line Driver Features
• Differential input and output line driver
• Line impedance matching during power-down
• Fixed differential gain
• Low power consumption (0.22 W typical)
• 32-pin TQFP
1.4
Reference Design
A reference design for a USB card is available to minimize application design time and costs.
The card is pretested to pass FCC Part 15 and Part 68 for immediate manufacturing.
A design package is available in electronic form. The design package includes files for schematics, bill of materials (BOM),
board layout (Gerber format), and documentation.
The design can also be used for the basis of a custom design by the OEM to accelerate design completion for rapid market
entry.
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AccessRunner ADSL-USB Modem Device Set Data Sheet
2.
System Description
2.1
General Description
The ADSL - USB modem solution hardware connects to the host PC via USB interface. The complete chipset and system
software is provided. The OEM adds a crystal circuit, EEPROM, RAM, LEDs, and other discrete components. All software to
support a full rate and/or G.lite ADSL modem is provided. Additionally, a control panel providing connection and system
status, an installation wizard providing automatic provisioning, a serial EEPROM programming utility, and a manufacturing
test program are provided.
2.1.1
Boot ROM and Power Up Procedure
The P5200 USB Interface Controller (UIC) contains a boot loader in internal ROM. Upon power up, the P52 UIC reads the
vendor specific USB descriptor information from EEPROM, and then enumerates with the host PC. EEPROM is required so
that USB descriptor information can be supplied during the enumeration process.
2.1.2
Serial EEPROM Programming Utility
The OEM-supplied serial EEPROM is required to store the USB device, configuration, interface, and endpoint descriptors. A
DOS-based EEPROM Programming Utility is available for the OEM to use to program the serial EEPROM with USB device,
configuration, interface, and endpoint descriptors. The USB device descriptors (including Vendor ID, Product ID, Device
Release Number, Manufacturer Name, Product Name, and Serial Number) can be customized as required.
2.2
ADSL Operation
2.2.1
ADSL Operating Modes
Full Rate ADSL Modes
Both T1.413 and G.992.1 (G.dmt) line coding schemes are supported for downstream rates up to 8 Mbps and upstream rates
up to 1 Mbps in 32 kbps increments. User selection of mode is supported through the provided control panel, however, autoprovisioning is supported so that the appropriate modulation is automatically selected based on what is supported by the DSL
Access Multiplexer (DSLAM) at the Central Office. When operating in one of the full rate modes, the low and high frequency
bands must be separated with a filter. This can be done with either a service provider-installed splitter (known as “splittered
ADSL”), or with the use of distributed micro-filters in line with each POTS device on the circuit (known as “splitterless full-rate
ADSL”). Both deployment models are supported.
G.lite Splitterless Mode
G.992.2 (G.lite) splitterless mode is supported for downstream rates up to 1.5 Mbps and upstream rates up to 512 kbps in 32
kbps increments. User selection of mode is supported through the provided control panel, however, auto-provisioning is
supported so that the appropriate modulation is automatically selected based on what is supported by the DSLAM at the
Central Office. When operating in splitterless mode, the low and high frequency bands do not need to be separated with a
filter, and neither a service provider installed splitter, nor distributed micro-filters are required.
G.lite mode supports power management by defining a set of power management states for the link and the use of the
Embedded Operations Channel (eoc) to coordinate between the ATU-R and ATU-C.
LAN Mode
RFC-1483, bridged Ethernet over ATM, is supported in the LAN driver. This protocol provides LLC encapsulation for carrying
network interconnect traffic over a single ATM AAL5 Virtual Connection. LLC encapsulation is desirable when it is not
practical to have a separate VC for each carried protocol, such as with an ATM network that only supports Permanent Virtual
Circuits (PVCs). The provided NDIS 5 drivers automatically establish a “connection-less” call using the defined PVC, and
encapsulate Ethernet bridged frames.
WAN Mode
RFC-2364, PPP over ATM, is supported in the WAN driver. Point-to-Point Protocol provides a method of transporting multiprotocol packets over point-to-point links. Point-to-point links allow for services such as Link Control Protocol, Network-layer
Control Protocol, and authentication. The PPP over ATM standard brings these point-to-point services to the ATM network
where they are not inherently supported. The provided NDIS 5 drivers accept an empty dial string on a specific “link” or PVC
from Windows Dial-up Networking to establish a call, and encapsulate PPP frames.
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AccessRunner ADSL-USB Modem Device Set Data Sheet
User selection of WAN or LAN mode can be done manually via the provided control panel. However, auto-configuration is
supported with the provided installation wizard, so that the protocol mode is selected properly without user intervention.
2.2.2
Host Software
The host software NDIS miniport driver provided implements the ATM Adaptation Layer 5 (AAL5), which is composed of two
sublayers: 1) the Segmentation and Reassembly (SAR) layer, and 2) the Convergence Sublayer (CS). The AAL5 protocol
provides virtual connections, which offer error detection, but not error correction, between end stations attached to the same
network.
The SAR sublayer transmitter segments the higher layer information into a size suitable for the payload of the ATM cells of a
virtual connection. The receiver reassembles the contents of the cells of a virtual connection into data units to be delivered to
higher layers. During periods of no data transmission, the device set, and not the host software driver, performs idle cell
insertion and deletion, thus unloading this task from the host PC and unburdening the USB with unnecessary traffic.
The Convergence Sublayer performs message identification and clock recovery. Additionally, the CS of the AAL converts the
user service information coming from the upper layer into a protocol data unit (PDU), and also carry out the opposite process
at the receiver.
Unspecified Bit Rate (UBR) service is supported. It allows a connection to be established without specifying the bandwidth
expected from the connection. The network makes no guarantees for UBR service: it establishes the route but does not
commit bandwidth. UBR can be used for applications that have no delivery constraints and do their own error and flow
control. Examples of potential uses or UBR are e-mail and file transfer, as neither application has real-time characteristics.
2.2.3
Control Panel
A Windows Control Panel Applet is provided to monitor and control ADSL line and call activity, accumulate ADSL line and call
statistics, and identify the software and connection information. The control panel provides different levels of information: 1)
User, 2) Advanced User, 3) Developer. It is intended that only the User level information, which consists of basic connection
statistics such as line rate and connect status, is available to the end user. Other information available to the Advanced User
and Developer include Physical Layer Statistics, ATM Link Statistics, AAL Link Statistics, Protocol setup, and a logging
capability, which collects performance data and logs it to disk.
2.2.4
Installation Wizard
A Windows Installation Wizard is provided to ease the user’s provisioning of the ADSL service. The Wizard allows the user to
select a service provider allowing the associated setup profile to automatically ensure proper setup and installation of the
software drivers. The profiles, based on input from various ADSL service providers, are provided to facilitate deployment and
to minimize user involvement in provisioning ADSL service. A profile contains configuration information for physical layer
options, ATM layer parameters, AAL layer parameters, and TCP/IP layer parameters.
2.3
Device Description
2.3.1
P5200 UIC Description
The P5200 USB Interface Controller (UIC) is the bridge device between the CX11627 ADSL DMT Data Pump (ADDP) and the
host computer. It provides the control, interface, and data manipulation for the CX11627 ADDP, the CX20431 Analog Front
End (AFE), the CX20441 Line Driver (LD), and hybrid circuitry.
The P5200 has output ports for LED indicators and an interface to serial EEPROM for storing vendor specific descriptors. The
UIC conforms to the USB Specification Rev. 1.1 and supports full-speed (12 Mbps) USB device implementation.
The P5200 operates from +1.8V for core operation and +3.3V for interface circuit operation. The P5200 can operate with
+3.3V interface signals (VGG = +3.3V) or +5V interface signals (VGG = +5V).
ARM Processor
The ARM Processor provides the controller and supervisory tasks of the ADSL-USB system. It moves data between the USB
port and the ADSL interface. Control code for the ARM is executed from external memory under control of the External
Memory Controller (EMC).
External Memory Controller
The External Memory Controller (EMC) provides a 16-bit interface to support up to 8 Mbytes of external memory. SDRAM or
SRAM is supported to maintain lowest cost of external memory. There can be 1 (16 bits wide) or 2 (8 bits wide) memories that
can reside on the EMC bus. This bus is not shared with any other functions so activity on this bus can be concurrent with
asynchronous and independent USB port or ADSL data transfers.
2-2
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AccessRunner ADSL-USB Modem Device Set Data Sheet
ARM Processor
SDRAM
or SRAM
EEPROM
USB
RAM
ROM
External
Memory
Controller
(EMC)
Control Logic
EEPROM
Interface
USB
Interface
Host
Interface
ADSL
Data Pump
and AFE
ADSL
Interface
GPIO
100427 F2-1_BD_P5200
Figure 2-1. P5200 UIC Block Diagram
Host Interface
The Host Interface is a 16-bit data and 21-bit address bus used for control of the ADSL Data Pump.
ADSL Interface
The ADSL Interface is responsible for data transfer to and from the ADSL Data Pump and the setup of the AFE.
USB Interface
The USB Interface is responsible for data transfer to and from the USB, by extracting clock and data from the USB cable. It
also handles the front end functions of the USB protocol such as Sync Field Identification, NRZI-NRZ Conversion, Bit
Stripping and Stuffing, and CRC functions. Additionally, the USB port converts the serial packet to 8-bit parallel data. Control
transfers addressed to End Point Zero are handled by the USB port.
LED Interface
GPIO are used to support the following LED signals: Power, Ready, Showtime, TXD, and RXD.
EEPROM Interface
A 2-wire serial EEPROM is used to store USB device, configuration, interface, and endpoint descriptors. Device descriptors
include Vendor ID, Product ID, Device Release Number, Manufacturer Name, Product Name, and Serial Number. Both 4196
bit and 2048 bit EEPROMs are supported. The EEPROM speed must be capable of 400 kHz clock frequency.
A typical 4196 bit (512 x 8) EEPROM that meets P5200 UIC requirements is the Fairchild M24C04M8 or equivalent.
A typical 2048 bit (256 x 8) EEPROM that meets P5200 UIC requirements is the Fairchild M24C02M8 or equivalent.
General Purpose Input/Output Interface
Most General Purpose Input/Output (GPIO) pins are programmed for dedicated system functions or reserved for test or
growth functions and are not available for user assignment. Each GPIO pin is controlled individually for input/output direction.
All GPIO pins can serve as external interrupt inputs.
100427B
Conexant
2-3
AccessRunner ADSL-USB Modem Device Set Data Sheet
2.3.2
CX11627 ADDP Description
The CX11627 ADSL DMT Data Pump (ADDP) is a T1.413 Issue 2, G.992.1, and G.992.2 compliant custom digital signal
processing (DSP) chip built specifically for DMT ADSL transmission for use in ADSL modems. The CX11627 operates from
+2.5V for core operation and +3.3V for interface circuit operation. A block diagram of the CX11627 ADDP is shown in Figure
2-2.
ATM Transmission Convergence
In the transmit direction, the ATM Transmission Convergence (TC) block embeds ATM cells into the serial data stream being
fed into the digital interface, i.e., the P5200 UIC. In the receive direction, this block extracts the ATM cell boundaries from the
serial data stream coming from the digital interface To reduce traffic on the USB, the TC block performs idle cell insertion in
the transmit direction and idle cell deletion and header error correction in the receive direction.
Digital Interface
The Digital Interface (DI) Transmit Block performs the following functions: transmit data multiplexing and buffering, fast and
interleave data stream framing, transmit data synchronization control, eoc/aoc insertion, CRC encoding, scrambling, FEC
encoding, and data interleaving.
The DI Receive Block performs the following functions: data de-interleaving, FEC decoding, descrambling, CRC check,
receive data synchronization and receive clock generation, demultiplexing and buffering of receive data and receive eoc/aoc.
QAM Encoder/Decoder
The QAM Encoder/Decoder performs the following functions: constellation encoding, clock recovery, receive gain
compensation, frequency domain equalization (FEQ), slicing, and constellation decoding. The block also performs other
functions such as frequency domain signal processing, signal power, error power averaging and computations related to
frequency domain training.
FFT
The FFT performs IFFT for modulation of the transmit symbol, and FFT for demodulation of the receive symbol.
Analog Front End Interface
The Analog Front End (AFE) interface performs the following functions: transmit signal filtering, time domain equalization, and
time domain signal power averaging, and echo cancellation (EC).
Microcontroller Interface
The microcontroller interface enables the P5200 UIC to set parameters to control DSP sequencing and to read/write
coefficients or data.
CX11627 ADSL DMT Data Pump (ADDP)
Digital
Interface (DI)
DI
Transmit
Block
P5200
USB
Interface
Controller
(UIC)
ATM
TC
DI
Receive
Block
QAM Encoder/Decoder
Bit
Parser
and QAM
Encoder
QAM
Decoder
and Bit
Parser
FFT
IFFT
AFE Interface
Transmit
Filter
DAC
Intf
EC
FEQ
FFT
Time
Domain
Equalizer
ADC
Intf
CX20431
Analog
Front End
(AFE)
Microcontroller
Interface
100427 F2-2 BD 11627
Figure 2-2. CX11627 ADDP Block Diagram
2-4
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
2.3.3
CX20431 AFE Description
The CX20431 Analog Front End (AFE) can support full-rate and G.lite (G.992.2) ADSL modems. The CX20431 AFE
interfaces with the CX20441 LD and the hybrid receive circuitry on the analog side, and with the CX11627 ADDP on the
digital side.
The receive section filters out the unwanted echo and boosts the wanted signal before performing an analog-to-digital (A/D)
conversion.
The transmit section converts digital data to analog signals and performs a smoothing operation before presenting the signals
to the line driver.
Wakeup in G.lite mode is supported by tone detection circuitry integrated in the CX20431 AFE.
The CX20431 operates from a +3.3V supply.
A block diagram of the CX20431 AFE is shown in Figure 2-3.
CX20431 Analog Front End (AFE)
Digital Section
P5200
USB
Interface
Controller
(UIC)
Analog Section
Decimation
Filter
ADC
Serial
Interface
CX11627
ADSL
Data Pump
(ADDP)
Low Pass
Filter
AGC
High Pass
Filter
AGC
Low Pass
Filter
Hybrid
OpAmp
Hybrid
Reference
Generators
Interpolation
Filter
DAC
SC Filter
CX20441
Line Driver
(LD)
100427 F2-3_BD_P20431
Figure 2-3. CX20431 AFE Block Diagram
100427B
Conexant
2-5
AccessRunner ADSL-USB Modem Device Set Data Sheet
2.3.4
CX20441 LD Description
The CX20441 Line Driver (LD) supports full-rate (T1.413 and G.992.1) and G.lite (G.992.2) ADSL modems. It is optimized for
ideal ADSL performance providing low noise, high bandwidth, and superior linearity. The CX20441 LD transmits a DMT
modulated signal in the 25 – 132 kHz band.
The CX20441 LD operates from a +5V supply. Internal load balancing prevents the CX20441 LD from loading the system
when in a power down state. A block diagram of the CX20441 LD is shown in Figure 2-4.
248.4
OUTP_DRV
INP_DRV
+
-
+
+
-
400
INM_DRV
248.4
OUTM_DRV
RBIAS
Current Control
Block
100427 F2-4_BD_20441
Figure 2-4. CX20441 LD Block Diagram
2-6
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.
Hardware Interface
3.1
P5200 UIC Hardware Interface Signals
3.1.1
P5200 UIC Signal Interface, Pin Assignments, and Signal Definitions
P5200 UIC hardware interface signals are shown in Figure 3-1.
P5200 UIC pin assignments are shown in Figure 3-2.
P5200 UIC hardware interface signals are defined in Table 3-1. Input/output types are described in Table 3-2.
100427B
Conexant
3-1
AccessRunner ADSL-USB Modem Device Set Data Sheet
151
152
29
USB
INTERFACE
USB Resume
150
USB PWR DETECT
27
CLOCK
39
NC
4.7K
28
98
RESET CIRCUIT
160
1
176
2
LED
INTERFACE
11
12
EEPROM
31
32
33
34
35
JTAG
36
NC
25
66
99
154
+1.8V
21
+1.8V THROUGH FILTER
8
16
37
47
57
71
81
91
107
117
127
137
147
158
171
+3.3V
23
101
+3.3V OR +5V
26
67
100
155
9
17
38
48
58
72
82
92
108
118
128
138
148
159
172
22
GND
NC
157
175
68
13
14
15
18
19
20
24
BCLKIO (GPIO38)
PAIR_SEL (GPIO21)
LD_OH_DET (GPIO05)
USBP
USBN
FCLKIO (GPIO39)
USB_Pwr_Det (GPIO22)
CLKI
BOPT (GPIO14)
LD_PC (GPIO13)
AFE_RST# (GPIO08)
AFE_SCLK
AFE_STB
AFE_CTRLIN
AFE_CTRLOUT
AFE_WAKEUP
RXSOC0
RCLKAS0
RDATAS0
TXSOC0
TCLKLS0
TDATLS0
PLLBP
HRST#
LED_READY (GPIO07)
LED_SHOWTIME (GPIO18)
LED_TXD (GPIO19)
LED_RXD (GPIO20)
I2C_SCL (GPIO16)
I2C_SDA (GPIO15)
TRST#
TCK
TMS
TDI
TDO
TREQA
VDD
VDD
VDD
VDD
VDDA
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
VDDO
RST# (GPIO09)
IRQ0 (GPIO10)
IRQ1 (GPIO11)
PD (GPIO12)
SCANMODE (GPIO26)
HAD00
HAD01
HAD02
HAD03
HAD04
HAD05
HAD06
HAD07
HAD08
HAD09
HAD10
HAD11
HAD12
HAD13
HAD14
HAD15
HC01
HC02
HC03
HC04
HC05
HC06
HC07
HAD16
HAD17
HAD18
HC08
HC09
HC12 (GPIO34)
P5200
USB Interface
Controller
(UIC)
176-PIN TQFP
HA10
HAD19
HAD20
HAD21
HAD22
HAD23
HAD24
HAD25
HAD26
HAD27
HAD28
HAD29
HC00 (GPIO32)
FLASH_RST# (GPIO23)
HC11 (GPIO33)
HAD31 (GPIO37)
VGG
VGG
VSS
VSS
VSS
VSS
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSO
VSSA
Reserved (GPIO06)
Reserved (GPIO17)
Reserved (GPIO25)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
MB0
MB1
MA00
MA01
MA02
MA03
MA04
MA05
MA06
MA07
MA08
MA09
MA10
MA11
MD00
MD01
MD02
MD03
MD04
MD05
MD06
MD07
MD08
MD09
MD10
MD11
MD12
MD13
MD14
MD15
MM1
MM0
MCLK
MCKE
MRAS#
MCAS#
MWE#
MCS#
30
3
156
166
161
4
7
10
5
6
168
169
167
173
174
170
162
163
164
165
153
88
87
86
85
84
83
80
79
78
77
76
75
74
73
70
65
64
63
62
61
60
59
56
55
54
53
96
95
89
94
52
51
50
49
46
45
44
43
42
41
40
93
97
90
69
RECEIVE PAD
I/O PAIR SEL
ROH#
LINE
INTERFACE
PWRDWN# (OPTIONAL)
PWRDWN#
CX20441 LD
POR#
STROBE
CTRL_STRB
CTRL_IN
CTRL_OUT
WAKEUP
CX20431 AFE
RXSOC0
R_NCO_AS0
R_DAT_AS0
TXSOC0
T_CLK_LS0
T_DAT_LS0
CX11627 ADDP
SERIAL
INTERFACE
RSTB
IRQ1
IRQ2
PWR_DWN
SSCANMODE
CX11627 ADDP
CONTROL
D00
D01
D02
D03
D04
D05
D06
D07
D08
D09
D10
D11
D12
D13
D14
D15
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
RDB
WRB
CSB
CX11627 ADDP
PARALLEL
INTERFACE
1K
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
OE#
RESET#
NC
NC
149
146
145
144
143
142
141
140
139
136
135
134
133
132
121
120
119
116
115
114
113
112
111
110
109
106
105
104
103
102
124
125
122
123
126
129
131
130
NC
BA0
BA1
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
DQMH
DQML
CLK
CLKE
RAS#
CAS#
WE#
CS#
SDRAM
or
SRAM
100427_F3-01_HIS P5200 176T
Figure 3-1. P5200 UIC Hardware Interface Signals
3-2
Conexant
100427B
LED_SHOWTIME (GPIO18)
LED_RXD (GPIO20)
PAIR_SEL (GPIO21)
AFE_SCLK
AFE_CTRLOUT
AFE_WAKEUP
AFE_STB
134
133
MA10
MA07
MA08
MA09
136
135
MA06
VSSO
VDDO
139
138
137
MA03
MA04
MA05
141
140
MA01
MA02
144
143
142
MB1
MA00
146
145
MB0
VSSO
VDDO
148
147
USBP
USB_Pwr_Det (GPIO22)
151
150
149
VDD
SCANMODE (GPIO26)
USBN
153
152
LD_OH_DET (GPIO05)
VSS
155
154
VDDO
Reserved (GPIO06)
157
156
159
158
RST# (GPIO09)
AFE_RST# (GPIO08)
LED_READY (GPIO07)
VSSO
160
162
161
PD (GPIO12)
IRQ1 (GPIO11)
IRQ0 (GPIO10)
165
164
163
RDATAS0
LD_PC (GPIO13)
167
168
166
TDATLS0
RCLKAS0
RXSOC0
170
169
TXSOC0
VSSO
173
172
171
VDDO
LED_TXD (GPIO19)
Reserved (GPIO17)
TCLKLS0
175
176
174
AccessRunner ADSL-USB Modem Device Set Data Sheet
1
132
MA11
2
131
MWE#
3
130
MCS#
4
129
MCAS#
5
128
127
VDDO
6
VSSO
126
MRAS#
8
125
9
10
124
MM0
MM1
123
I2C_SCL (GPIO16)
I2C_SDA (GPIO15)
Reserved
11
122
MCLK
12
121
MD00
13
120
MD01
Reserved
14
119
118
MD02
VDDO
VSSO
AFE_CTRLIN
7
MCKE
VSSO
Reserved
VDDO
16
117
VDDO
VSSO
17
116
MD03
Reserved
15
115
18
MD04
Reserved
19
114
MD05
Reserved
20
113
MD06
VDDA
21
112
MD07
VSSA
22
111
MD08
VGG
Reserved
VDD
VSS
CLKI
110
23
24
P5200
25
26
27
MD09
109
MD10
108
VSSO
107
VDDO
106
MD11
MD12
PLLBP
28
FCLKIO (GPIO39)
BCLKIO (GPIO38)
TRST#
29
104
MD13
30
103
MD14
102
MD15
TCK
TMS
TDI
TDO
TREQA
VDDO
VSSO
BOPT (GPIO14)
HAD29
HAD28
105
31
VGG
32
101
33
100
VSS
99
VDD
34
35
98
HRST#
36
97
37
96
FLASH_RST# (GPIO23)
HC08
HC09
38
95
39
94
HC10
40
93
HC00 (GPIO32)
41
92
VSSO
HAD27
42
91
VDDO
HAD26
HAD25
43
90
89
HC11 (GPIO33)
85
86
87
88
HAD03
HAD02
HAD01
HAD00
82
83
84
VSSO
HAD05
VDDO
HAD04
80
81
HAD06
77
78
79
HAD09
HAD08
HAD07
75
76
HAD11
HAD10
73
74
HAD13
HAD12
70
71
72
VSSO
68
69
VDD
VSS
Reserved (GPIO25)
HAD31 (GPIO37)
HAD14
VDDO
67
64
HC01
HAD15
65
66
62
63
HC02
61
HC04
HC03
59
60
HC06
HC05
56
58
HC07
VDDO
VSSO
57
54
55
HAD17
53
HAD16
51
52
HAD20
HAD19
HAD18
48
49
50
VSSO
HAD22
HAD23
VDDO
HAD21
45
46
47
HAD24
44
HC12 (GPIO34)
100427F3-02 PO-P50-176T
Figure 3-2. P5200 UIC Pin Signals-176-Pin TQFP
100427B
Conexant
3-3
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-1. P5200 UIC Hardware Signal Definitions
Label
Pin
I/O
I/O Type
Signal Name/Description
USB INTERFACE
USBP,
USBN
151,
152
I/O
Iu/Ou
USB Port. USBP and USBN are the differential data positive and
negative signals of the USB port. Connect USBP and USBN to USB
+Data and -Data, respectively, through 10 Ω, and optionally through a
quick switch in order to isolate the USBP and USBN from the USB
during suspend mode.
FCLKIO (GPIO39)
29
I
It
USB Resume. Active high input used to detect occurrence of USB
resume event.
USB5V_DET
(GPIO22)
150
I
It
CLKI
27
I
Ith
HRST#
98
I
Ith
Reset. Active low input signal to reset the P5200 UIC. Connect to
reset circuit.
BOPT (GPIO14)
39
I
It
Boot Option. To boot from internal ROM, leave open. To boot from
external ROM, pull down with 4.7k Ω resistor. Leave open.
PLLBP
28
I
It
PLL Ground. Connect to GND through 4.7 kΩ.
USB POWER DETECT INTERFACE
USB 5 V Detect. Active high input used to detect presence of +5 V at
the USB connector.
CLOCK INTERFACE
Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator
(VCXO) output through 51 Ω.
CONTROL INTERFACE
CX20431 AFE CONTROL AND SERIAL INTERFACE
AFE_SCLK
4
I
It
AFE Clock In. Connect to AFE STROBE through 33 Ω.
AFE_STB
7
O
Otts4
AFE Strobe Out. Connect to AFE CTRL_STRB.
AFE_CTRLIN
10
O
Otts4
AFE Control In. Serial digital data sent to the AFE. Connect to AFE
CTRL_IN.
AFE_CTRLOUT
5
I
It
AFE Control Out. Serial digital data received from the AFE. Connect
to AFE CTRL_OUT.
AFE_WAKEUP
6
I
Ith
AFE Wakeup. DSL Power Management Wakeup Signal from AFE.
Connect to AFE WAKEUP.
HAD[18:16]
53-55
O
Ot4
Address Lines 9-7. Connect to ADDP A[9:7], respectively.
HC[07:01]
56, 59-64
O
Ot4
Address Lines 6-0. Connect to ADDP A[6:0], respectively.
HAD[15:0]
65, 70, 73-80,
83-88
I/O
It/Ot4
Data Lines 15-00. Connect to ADDP D[15:0], respectively.
HC08
96
O
Ot4
Read Enable. Active low read enable. When asserted, data is
transferred from the selected device onto the data bus. Connect to
ADDP RDB.
HC09
95
O
Ot4
Write Enable. Active low write enable. When asserted, data is
transferred from the data bus into the selected device. Connect to
ADDP WRB.
HC12 (GPIO34)
89
O
O
ADDP Chip Select. Active low output select ADDP when asserted.
Connect to ADDP CSB.
IRQ0#
(GPIO10)
163
I
Itpu
ADDP Interrupt Request 1. Active low input asserted to request
interrupt servicing by the ADDP. Connect to ADDP IRQ1.
IRQ1#
(GPIO11)
164
I
Itpu
ADDP Interrupt Request 2. Active low input asserted to request
interrupt servicing by the ADDP. Connect to ADDP IRQ2.
PD
(GPIO12)
165
O
Ot4
ADDP Power Down. Active low output asserted put ADDP in a low
power mode. Connect to ADDP PWR_DWN.
RST#
(GPIO09)
162
O
Ot4
ADDP Reset. Active low output resets ADDP when asserted. Connect
to ADDP RSTB.
SCANMODE
(GPIO26)
153
O
Ot4
Scan Mode. Connect to ADDP SSCANMODE.
CX11627 ADDP PARALLEL INTERFACE
3-4
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-1. P5200 UIC Hardware Signal Definitions (Continued)
Label
Pin
I/O
I/O Type
Signal Name/Description
CX11627 ADDP SERIAL CHANNEL INTERFACE
RXSOC0
168
I
Itpu
Receive ATM0 Start of Cell. Connect to ADDP RXSOC0.
RCLKAS0
169
I
Itpu
Receive AS0/ATM0 Data Clock. Connect to ADDP R_CLK_LS0.
RDATAS0
167
I
Itpu
Receive AS0/ATM0 Serial Data. Connect to ADDP R_DAT_LS0.
TXSOC0
173
O
Otts4
Transmit ATM0 Start of Cell. Connect to ADDP TXSOC0.
TCLKLS0
174
I
It
Transmit LS0/ATM0 Data Clock. Connect to ADDP T_CLK_LS0.
TDATLS0
170
O
Otts4
Transmit LS0/ATM0 Serial Data. Connect to ADDP T_DAT_LS0.
CX20431 AFE AND CX20441 LD CONTROL
AFE_RST#
(GPIO08)
161
O
Ot4
AFE Reset. Active low reset output to the AFE and the LD. Connect
to AFE POR# and to LD PWRDWN#.
LD_PC
(GPIO13)
166
O
Ot4
Line Driver Power Control. Optionally, connect to LD PWRDWN#
when it is desired to power down only the LD.
LINE INTERFACE
LD_OH_DET
(GPIO05)
156
I
It
Off-Hook Detect. Active low; indicates POTS off-hook event. Used
for G.lite Mode only. Connect to off-hook detector circuit.
PAIR_SEL
(GPIO21)
3
O
Itpu/Ot4
Inner/Outer Pair Select. Connect to wire-pair selection circuit.
BCLKIO (GPIO38)
30
O
Itpu/Ot4
Receive Pad. Connect to receive pad circuitry in hybrid.
SERIAL EEPROM INTERFACE
I2C_SCL (GPIO16)
11
O
Ot4
I2C_SDA (GPIO15)
12
I
Itpu
Serial EEROM Clock. Connect to EEPROM clock input.
Serial EEROM Data. Connect to EEPROM data line.
JTAG INTERFACE
TRST#
31
I
Itpu
JTAG Reset. A high-to-low transition on this signal forces the TAP
controller into a logic reset state. This pin has an internal pullup, and it
conforms to IEEE 1149.1 JTAG specification.
TCK
32
I
It
JTAG Test Clock. This is the boundary scan clock input signal. This
pin has an internal pullup, and it conforms to IEEE 1149.1 JTAG
specification.
TMS
33
I
Itpu
JTAG Test Mode Select. This signal controls the operation of the
TAP controller. This pin has an internal pull-up, and it conforms to
IEEE 1149.1 JTAG specification.
TDI
34
I
Itpu
JTAG Test Input. This signal contains serial data that is shifted in on
the rising edge of TCK. The pin has an internal pullup, and it conforms
to IEEE 1149.1 JTAG specification.
TDO
35
O
Otts4
JTAG Test Output Data. This is the three-stateable boundary scan
data output signal from the MCU, and it is shifted out on the falling
edge of TCK. It conforms to IEEE 1149.1 JTAG specification.
100427B
Conexant
3-5
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-1. P5200 UIC Hardware Signal Definitions (Continued)
Label
Pin
I/O
I/O Type
Signal Name/Description
SDRAM/SRAM INTERFACE
MA[11:00]
132-136, 139-145
O
Ot4
Multiplexed Row and Column Address Lines. Connect to
SDRAM/SRAM A[11:0], respectively.
MD[15:00]
102-106, 109116, 119-121
I/O
It/Ot4
Data Lines. Connect to SDRAM/SRAM D[15:0], respectively.
MB0
149
O
Ot4
Bank Address Select 0. Connect to SDRAM/SRAM Bank Address
Select 0 input for 8 MB SDRAM; leave open for 2 MB SDRAM.
MB1
146
O
Ot4
Bank Address Select 1. Connect to SDRAM/SRAM Bank Address
Select 1 input.
MM1
124
O
Ot4
Input/Output Mask 1. Connect to SDRAM/SRAM I/O Mask High
input.
MM0
125
O
Ot4
Input/Output Mask 0. Connect to SDRAM/SRAM I/O Mask Low
input.
MCLK
122
O
Ot4
SDRAM Clock. Connect to SDRAM Clock input.
MCKE
123
O
Ot4
SDRAM Clock Enable. Active high; enables SDRAM clock. Connect
to SDRAM Clock Enable input.
MRAS#
126
O
Ot4
SDRAM Row Address Strobe. Active low; starts SDRAM access
with strobe of row address. Connect to SDRAM RAS input.
MCAS#
129
O
Ot4
SDRAM Column Address Strobe. Active low; strobes column
address and data bytes. Connect to SDRAM CAS input.
MWE#
131
O
Ot4
SDRAM Memory Write Enable. Active low; indicates write access to
SDRAM. Connect to SDRAM Write Enable input.
MCS#
130
O
Ot4
SDRAM Memory Chip Select. Active low; enables SDRAM
command decoder. Connect to SDRAM chip select input.
LED INTERFACE
LED_RXD
(GPIO20)
2
O
Ot4
Receive Data LED. Illuminated when data is received from the ADSL
line.
LED_TXD
(GPIO19)
176
O
Ot4
Transmit Data LED. Illuminated when data is transmitted to the
ADSL line.
LED_SHOWTIME
(GPIO18)
1
O
Ot4
Showtime LED. Illuminated when the ADSL transceiver is in
Showtime Mode.
LED_READY
(GPIO070)
160
O
Ot4
Ready LED. Illuminated when the device is successfully enumerated
on the USB.
POWER AND GROUND
VDD
25, 66, 99, 154
PWR
PWR
Core Supply Voltage. Connect to +1.8V.
VDDA
21
PWR
PWR
Supply Voltage. Connect to +1.8V through filter.
VDDO
8, 16, 37, 47, 57,
71, 81, 91, 107,
117, 127, 137,
147, 158, 171
PWR
PWR
I/O Supply Voltage. Connect to +3.3V.
VGG
23, 101
REF
REF
I/O Clamp Power Supply. Connect to +5V if available, otherwise
connect to +3.3V.
VSS
26, 67, 100, 155
GND
GND
Core Ground. Connect to digital ground.
VSSO
9, 17, 38, 48, 58,
72, 82, 92, 108,
118, 128, 138,
148, 159, 172
GND
GND
I/O Ground. Connect to digital ground.
VSSA
22
GND
GND
Ground. Connect to digital ground.
3-6
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-1. P5200 UIC Hardware Signal Definitions (Continued)
Label
Pin
I/O
I/O Type
Signal Name/Description
NOT USED
HC10
94
I
It
Not Used. Connect to GND through 1 KΩ.
HAD[29:19]
40-46, 49-52
O
Ot4
Address Lines 20-10. If Flash ROM is installed, connect to Flash
ROM A[20:10], respectively. If Flash ROM is not installed, leave open.
HC00 (GPIO32)
93
O
Ot4
Flash ROM Chip Enable. Active low output enables optional Flash
ROM when asserted. If Flash ROM is installed, connect to Flash ROM
CE#. If Flash ROM is not installed, leave open.
FLASH_RST#
(GPIO23)
97
O
Ot4
Flash ROM Reset. Active low output resets optional Flash ROM
when asserted. If Flash ROM is installed, connect to Flash ROM
RESET#. If Flash ROM is not installed, leave open.
HC11 (GPIO33)
90
I/O
It/Ot4
Not Used. Leave open.
HAD31 (GPIO37)
69
I/O
It/Ot4
Not Used. Leave open.
TREQA
36
I
Itpd
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved (GPIO06)
157
I/O
Itpu/Ot4
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved (GPIO17)
175
I/O
Itpu/Ot4
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved (GPIO25)
68
I/O
Itpu/Ot4
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved
13-15, 18-20, 24
Reserved. These pins are connected to internal circuitry. Leave open.
NOTES:
I/O Types: See Table 3-2.
Table 3-2. P5200 UIC Input/Output Type Descriptions
I/O Type
Description
It
Digital input, +5V tolerant, CIN = 8 pF
It/Ot4
Digital input, +5V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Ith
Digital input, +5V tolerant, with hysteresis, CIN = 8 pF
Itpd
Digital input, +5V tolerant, 75k Ω pull-down, CIN = 8 pF
Itpu
Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF
Itpu/Ot4
Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Otts4
Digital output, 3-State, 4 mA, ZINT =80 Ω
Iu/Ou
Input, USB receiver/Output, USB driver
NOTES:
1. See DC characteristics in Table 3-3.
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.
100427B
Conexant
3-7
AccessRunner ADSL-USB Modem Device Set Data Sheet
P5200 UIC Electrical and Environmental Specifications
P5200 UIC DC electrical characteristics are listed Table 3-3.
P5200 UIC operating conditions are specified in Table 3-4.
P5200 UIC absolute maximum ratings are stated in Table 3-5.
P5200 UIC power consumption is listed in Table 3-6.
Table 3-3. P5200 UIC DC Electrical Characteristics
Parameter
Symbol
Min.
Input high voltage
Input low voltage
Input leakage current
VIH
VIL
IIL/IIH
Input leakage current (with internal
pull-downs) (See Note 2)
Input leakage current (with internal
pull-ups) (See Note 2)
Internal pullup/pulldown resistance
Rpu/Rpd
Output high voltage
Output low voltage
Input/output capacitance
VOH
VOL
CINOUT
Typ.
Max.
Units
2.0
-0.5
-10
VGG + 0.5
0.8
10
VDC
VDC
IIL/IIH
-10
100
µA
IIL/IIH
-100
10
µA
50
200
2.4
VDDO
0.4
kΩ
VDC
VDC
pF
3
µA
Test Conditions
(see Note 1)
VIN = 0 for Min.
VIN = VIN (MAX) for Max.
VIN = 0 for Min.
VIN = VIN (MAX) for Max.
VIN = 0 for Min.
VIN = VIN (MAX) for Max.
IOH = 4 mA
IOL = 4 mA
NOTES:
1. Test Conditions (unless otherwise stated):
VDDcore = +1.8 ± 0.15 VDC
VDDO = +3.3 ± 0.3 VDC;
VIN (MAX) = +3.6V for VGG connected to +3.3V;
2.
3.
3-8
VIN (MAX) = +5.25V for VGG connected to +5V.
Current flow out of the device is shown as minus.
Stresses above those listed may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to
absolute maximum ratings for extended periods of time may affect device reliability.
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-4. P5200 UIC Operating Conditions
Parameter
Symbol
Min
Typ
Max
Units
Core power supply
I/O power supply
Operating ambient temperature
VDD
VDDO
TA
1.65
3.0
0
1.8
3.3
1.95
3.6
70
VDC
VDC
°C
Table 3-5. P5200 UIC Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Units
VDD
-0.35
2.0
VDC
I/O power supply (VDDO = +3.3 V)
VDDO
-0.35
3.7
VDC
I/O power supply (VDDO = +5 V)
VDDO
-0.35
7.0
VDC
Input voltage
VIN
-0.35
VGG + 0.35*
VDC
Voltage applied to outputs in high impedance (Off)
state
Storage temperature
VHZ
-0.35
VGG + 0.35*
VDC
TS
-55
125
°C
Core power supply
* VGG = +3.3 V ± 0.3 V or +5 V ± 0.25 V.
Caution: Handling CMOS Devices
These devices contain circuitry to protect the inputs against damage due to high static voltages. However, it is advised that
normal precautions be taken to avoid application of any voltage higher than maximum rated voltage.
An unterminated input can acquire unpredictable voltages through coupling with stray capacitance and internal cross talk.
Both power dissipation and device noise immunity degrades. Therefore, all inputs should be connected to an appropriate
supply voltage.
Input signals should never exceed the voltage range from 0.5V or more negative than GND to 0.5V or more positive than
VDD. This prevents forward biasing the input protection diodes and possibly entering a latch up mode due to high current
transients.
Table 3-6. P5200 UIC Power Consumption
Mode
VDD (+1.8 V)
VDDO (+3.3 V)
NOTES:
1. Operating voltage:
2.
Test conditions:
100427B
Typ. Current
(mA)
Max. Current
(mA)
Typ. Power
(mW)
Max. Power
(mW)
85
15
105
25
155
45
205
90
VDD = +1.8 VDC ± 0.15 VDC
VDDO = +3.3 VDC ± 0.3 VDC.
VDD = +1.8 VDC for typical values; VDD = +1.95 VDC for maximum values.
VDDO = +3.3 VDC for typical values; VDDO = +3.6 VDC for maximum values.
Conexant
3-9
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.2
CX11627 ADDP Hardware Interface Signals
3.2.1
CX11627 ADDP Hardware Signals, Pin Assignments, and Signal Definitions
CX11627 ADDP hardware interface signals are shown in Figure 3-3.
CX11627 ADDP pin assignments are shown in Figure 3-4.
CX11627 ADDP hardware interface signals are defined in Table 3-7. Input/output types are described in Table 3-9.
3-10
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
35. 328 MHZ
CLOCK
CLK OUT
CLK CTRL
RXSOC0
RCLKAS0
P5200 UIC
SERIAL
INTERFACE
P5200 UIC
CONTROL
P5200 UIC
PARALLEL BUS
RDATAS0
TXSOC0
TCLKLS0
TDATLS0
RST# (GPIO09)
IRQ0 (GPIO10)
IRQ1 (GPIO11)
PD (GPIO12
SCANMODE
HC01
HC02
HC03
HC04
HC05
HC06
HC07
HAD16
HAD17
HAD18
HAD00
HAD01
HAD02
HAD03
HAD04
HAD05
HAD06
HAD07
HAD08
HAD09
HAD10
HAD11
HAD12
HAD13
HAD14
HAD15
HC12
HC08
HC09
68
66
45
39
11
41
21
15
16
85
83
82
79
55
102
101
100
99
98
97
96
95
94
91
127
126
125
124
123
120
119
118
117
116
115
114
113
112
111
104
87
86
90
22
+3.3V
+2.5V
+5V or +3.3V
10
27
36
54
69
76
89
110
122
132
156
168
176
25
26
59
60
61
70
71
93
108
109
134
140
154
155
103
1
9
18
19
20
28
35
52
53
62
63
64
72
73
74
75
88
92
105
106
107
121
131
133
139
151
152
153
167
175
MCLK
VCXO_CTRL
RXSOC0
R_NCO_AS0
T_CLK_AS1
R_DAT_AS0
TXSOC0
T_CLK_LS0
T_DAT_LS0
RSTB
IRQ1
IRQ2
PWR_DN
SSCANMODE
RX00
RX08
TX15
AFE_STRB
TEST_START
TEST_DONE
MON_CLK
MON_OUT
MON_DONE
TX00
TX01
TX02
TX03
TX04
A0
TX05
A1
TX06
A2
TX07
A3
TX08
A4
TX09
A5
TX10
A6
TX11
CX11627
A7
TX12
ADSL DMT Data Pump
A8
TX13
(ADDP)
A9
TX14
D00
RX01
176-PIN TQFP
D01
RX02
D02
RX03
D03
RX04
D04
RX05
D05
RX06
D06
RX07
D07
RX09
D08
RX10
D09
RX11
D10
RX12
D11
RX13
D12
RX14
D13
RX15
D14
DMCK_ALT
D15
T_INTER_BYTEB
CSB
T_FAST_BYTEB
RDB
T_CLK_AS0
WRB
T_DAT_AS1
T_DAT_AS0
TLXCK_EN
T_DAT_LS1
T_DAT_LS1
VDDO
BIT_CLOCK
VDDO
TXSOC1
VDDO
LTR
VDDO
NTR
VDDO
NTRCTL
VDDO
FILTER_CLK
VDDO
DAC_CLK
VDDO
R_INTER_SUPERB
VDDO
R_INTER_DATA
VDDO
R_FAST_SUPERB
VDDO
R_FAST_FRAMEB
VDDO
R_NCO_LS0
VDDO
R_NCO_LS1
R_NCO_AS1
VDDcore
R_DAT_AS1
VDDcore
R_CLK_LS0
VDDcore
R_CLK_LS1
VDDcore
R_DAT_LS0
VDDcore
R_DAT_LS1
VDDcore
RXSOC1
VDDcore
ADC_CLK
VDDcore
CLIPB
VDDcore
SCANEN
VDDcore
NC
VDDcore
NC
VDDcore
NC
VDDcore
NC
VDDcore
NC
129
143
174
24
58
56
78
77
67
157
158
159
160
161
162
163
164
165
166
169
170
171
172
173
130
135
136
137
138
141
142
144
145
146
147
148
149
150
30
5
4
6
12
7
13
14
17
23
81
8
29
3
2
31
32
33
34
37
38
40
42
47
49
48
50
46
128
84
65
43
44
51
57
80
RX0
RX1
TX0
STROBE
CX20431 AFE
SERIAL
INTERFACE
NC
NC
TEST
INTERFACE
NC
NC
NC
MONITOR
INTERFACE
NC
VGG
VSSO
VSSO
VSSO
VSS
VSS
VSSO
VSSO
VSSO
VSS
VSS
VSS
VSSO
VSS
VSS
VSS
VSSO
VSSO
VSS
VSS
VSS
VSSO
VSSO
VSS
VSSO
VSS
VSS
VSS
VSSO
VSSO
VSS
100427_F3-03_HIS 11627 176T
Figure 3-3. CX11627 ADDP Hardware Interface Signals
100427B
Conexant
3-11
VDDcore
134
133
VSSO
RX04
RX03
RX02
136
135
VSS
RX05
137
140
139
138
RX08
RX07
RX06
VDDcore
141
RX10
RX09
145
144
143
142
RX12
RX11
146
RX14
RX13
RX15
150
149
148
147
VSS
VSS
153
152
151
VDDO
VDDcore
VDDcore
VSSO
154
TX01
TX00
158
TX04
159
157
TX06
TX05
163
162
161
160
156
155
TX08
TX07
165
164
TX03
TX02
VDDO
VSSO
TX09
167
166
TX11
TX10
168
170
169
TX15
TX14
TX13
TX12
172
171
VDDO
VSS
175
174
173
176
AccessRunner ADSL-USB Modem Device Set Data Sheet
VSSO
1
132
VDDO
DAC_CLK
FILTER_CLK
T_FAST_BYTEB
T_INTER_BYTEB
T_CLK_AS0
2
3
131
130
RX01
T_DAT_AS0
NTR
VSSO
VDDO
T_CLK_AS1
T_DAT_AS1
T_DAT_LS1
T_DAT_LS1
T_CLK_LS0
T_DAT_LS0
BIT_CLOCK
VSSO
VSS
VSS
TXSOC0
TLXCK_EN
TXSOC1
AFE_STRB
VDDcore
VSS
4
129
RX00
5
6
128
127
ADC_CLK
D00
7
8
126
125
124
9
D01
D02
D03
D04
10
123
11
12
122
121
VSSO
13
120
D05
119
D06
D07
14
15
118
16
17
117
116
18
115
VDDO
D08
D09
D10
D11
19
114
20
21
113
112
D13
22
111
D14
23
110
24
109
108
107
VDDO
VDDcore
CX11627
25
26
D12
VDDcore
VSSO
VDDcore
VDDO
VSSO
28
105
NTRCTL
DMCK_ALT
29
30
104
103
VGG
R_INTER_SUPERB
R_INTER_DATA
31
102
A0
A1
A2
36
97
96
37
38
95
39
40
94
93
41
92
VSS
VSS
D15
A3
A4
A5
A6
A7
A8
VDDcore
87
88
86
81
84
85
82
83
80
NC
LTR
IRQ2
WRB
IRQ1
CLIPB
RSTB
RDB
CSB
VSSO
77
75
76
VSS
VSSO
VDDO
78
79
VSS
VSS
MON_CLK
PWR_DN
71
72
VDDcore
MON_OUT
68
69
70
MCLK
VDDO
VDDcore
73
74
67
MON_DONE
63
64
65
66
VSS
VSSO
SCAN_EN
VCXO_CTRL
62
VSS
58
59
56
57
60
61
54
55
VSS
VDDO
SSCAN_MODE
53
50
51
52
VDDcore
VDDcore
VDDO
TEST_DONE
NC
TEST_START
VDDcore
90
89
49
91
43
44
R_CLK_LS1
R_DAT_LS1
NC
VSSO
42
VSS
A9
45
R_DAT_AS1
NC
NC
99
98
46
47
48
R_NCO_AS1
R_DAT_AS0
101
100
RXSOC0
R_NCO_LS1
R_NCO_AS0
32
33
34
35
RXSOC1
R_CLK_LS0
R_DAT_LS0
R_FAST_SUPERB
R_FAST_FRAMEB
VSSO
VDDO
R_NCO_LS0
106
27
100427 F3-04 PO-11627-176T
Figure 3-4. CX11627 ADDP Pin Signals - 176-Pin TQFP
3-12
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-7. CX11627 ADDP Hardware Signal Definitions
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
CLOCK INTERFACE
MCLK
68
I
I
Master Clock In. Connect to 35.328 MHz voltage controlled crystal
oscillator (VCXO) output through 51 Ω.
VXCO_CTRL
66
O
O
VCXO Control Out. Oversampled VCXO analog control voltage
output. Connect to VCXO control circuit.
CX20431 AFE INTERFACE
RX[15:0]
150-144, 142141, 138-135,
130-129
I
I
Receive Data Lines. In the serial mode of operation, RX8 and RX0
transfer data from the AFE into the ADDP. The negative edge of the
AFE_STR# strobe signal from the AFE clocks the data into the
ADDP.
In the parallel mode of operation, RX[15:0] input data lines transfer
receive data into the ADDP. Data is clocked into the ADDP by
ADC_CLK. This mode is not used; leave RX[15:9] and RX[7:1] open.
TX[15:0]
174-169, 166-157
O
O
Transmit Data Lines. In the serial mode of operation, TX15 (used as
a programmable width serial bus) transfers data to the AFE from the
ADDP. The negative edge of the AFE_STR# strobe signal from the
AFE clocks the data from the ADDP.
In the parallel mode of operation, TX[15:0] output data lines transfer
data out of the ADDP. Data is clocked out of the ADDP by DAC_CLK.
This mode is not used; leave TX[14:0] open.
AFE_STR#
I
I
AFE Strobe. In the serial mode of operation, AFE_STR# from the
AFE triggers the transfer of serial transmit data on TX15 from the
ADDP to the AFE and triggers the transfer of serial receive data on
RX8 and RX0 from the AFE to the ADDP.
ADC_CLK
128
O
O
Receive Clock for Parallel Mode. In the parallel mode of operation,
data on RX[15:0] is clocked in to the ADDP by ADC_CLK. Not used;
leave open.
DAC_CLK
2
O
O
Transmit Clock for Parallel Mode. In the parallel mode of operation,
data on TX[15:0] is clocked out of the ADDP by DAC_CLK. Not used;
leave open.
FILTER_CLK
3
O
O
AFE Filter Clock. This signal can be used by the DAC interface block
to strobe the external AFE filters. Not use; leave open
D[15:0]
104, 111-120,
123-127
I/O
It/Ot
Data Bus. A 16-bit input/output data bus used to send data to the UIC
during a read operation or receive data from the UIC during a write
operation. Connect to D[15:0] to UIC HAD[15:0], respectively.
A[9:0]
91, 94-102
I
It
Address Bus. A 10-bit input address bus that identifies the location in
the ADDP that data on D[15:0] is written to during a write operation, or
that data is read from during a read operation for placing on D[15:0].
Connect A[9:7] to UIC HC[18:16], respectively and A[6:0] to UIC
HC[07:01], respectively.
CS#
87
I
It
Chip Select. Active low control input selects the ADDP. Connect CS#
to UIC HC12.
RD#
86
I
It
Data Read Enable. Active low control input strobes (on the negative
edge) data from the addressed location in the ADDP onto D[15:0].
Connect RD# to UIC HC08.
WR#
90
I
It
Data Write Enable. Active low control input strobes (on the negative
edge) data on D[15:0] into the ADDP addressed location. Connect
WR# to UIC HC09.
P5200 UIC PARALLEL INTERFACE
100427B
Conexant
3-13
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-7. CX11627 ADDP Hardware Signal Definitions (Continued)
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
P5200 UIC CONTROL
RSTB
85
I
I
Reset. Active low control input. When asserted, the ADDP is held in a
reset state. Connect to UIC RST# (GPIO09).
IRQ1
83
O
Ot
Interrupt Request 1. Active high interrupt asserted to request service
by the UIC. Connect to UIC IRQ0 (GPIO10).
IRQ2
82
O
Ot
Interrupt Request 2. Active high interrupt asserted to request service
by the UIC. Connect to UIC IRQ1 (GPIO11).
PWR_DN
79
I
I
Power Down. Active high control input When asserted, the ADDP is
held in a low power mode. Connect to UIC PD (GPIO12).
SSCANMODE
55
I
I
Scan Mode. Connect to UIC SCANMODE (GPIO26).
TLXCK_EN
22
I
I
LSX Transmit Data Clock Generation Enable. Connect to +3.3V.
P5200 UIC SERIAL INTERFACE
RXSOC0
45
O
O
TC0 Block Receive Start of Cell. Connect to UIC RXSOC0.
R_DAT_AS0
41
O
O
Receive Data (AS0). Connect to UIC RDATAS0.
R_NCO_AS0
39
O
O
Receive NCO (AS0). Connect to UIC RCLKAS0.
T_CLK_AS1
11
I
I
Transmit Data Clock (AS1). Connect to ADDP NCO_AS0.
T_CLK_LS0
15
I/O
I/O
Transmit Data Clock (LS0). Connect to UIC TCLKLS0.
T_DAT_LS0
12
I
I
Transmit Data (LS0). Connect to UIC TDATLS0.
TXSOC0
21
I
I
TC0 Block Transmit Start of Cell. Connect to UIC TXSOC0.
MONITOR INTERFACE
MON_OUT
77
O
O
Monitor Output. 1-bit serial D/A output used for constellation
monitoring. Used for test only; leave open during normal operation.
MON_CLK
78
O
O
Monitor Clock. Serial monitor 138 kHz clock output. Used for test
only; leave open during normal operation.
MON_DONE
67
O
O
Monitor Done. New symbol constellation qualifier. Used for test only;
leave open during normal operation.
POWER AND GROUND
VDDcore
25, 26, 59, 60, 61,
70, 71, 93, 108,
109, 134, 140,
154, 155
P
PWR
Core Circuits Supply Voltage. Connect to +2.5V supply.
VDDO
10, 27, 36, 54, 69,
76, 89, 110, 122,
132, 156, 168,
176
P
PWR
Input/Output Circuits Supply Voltage. Connect to +3.3V supply.
VSS
19, 20, 53, 62, 63,
72, 73, 74, 92,
105, 106, 131,
139, 151, 152,
175
G
GND
Core Circuits Ground. Connect to digital ground.
VSSO
1, 9, 18, 28, 35,
52, 64, 75, 88,
107, 121, 133,
153, 167
G
GND
Input/Output Circuits Ground. Connect to digital ground.
VGG
103
R
R
Input Reference Voltage. Reference voltage for +5V tolerant input
pins. A connection to +5V allows +5V or +3.3V input levels. A
connection to +3.3V allows +3.3V input levels only.
3-14
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-7. CX11627 ADDP Hardware Signal Definitions (Continued)
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
NOT USED
R_INTER_SUPERB
31
O
O
Receive Interleaved Data Bit Output Superframe Qualifier. Not
used; leave open.
R_INTER_DATA
32
O
O
Receive Interleaved Data Bit Output. Clocked at BIT_CLOCK rate.
R_FAST_SUPERB
33
O
O
Receive Fast Data Bit Output Superframe Qualifier. Not used;
leave open.
R_FAST_FRAMEB
34
O
O
Receive Fast Data Bit Output Frame Qualifier. Not used; leave
open.
R_CLK_LS0
47
I
I
Receive Data Clock (LS0). Not used; leave open.
R_CLK_LS1
49
I
I
Receive Data Clock (LS1). Not used; leave open.
R_DAT_AS1
42
O
O
Receive Data (AS1). Not used; leave open.
R_DAT_LS0
48
O
O
Receive Data (LS0). Not used; leave open.
R_DAT_LS1
50
O
O
Receive Data (LS1). Not used; leave open.
R_NCO_AS1
40
O
O
Receive NCO (AS1). Not used; leave open.
R_NCO_LS0
37
O
O
Receive NCO (LS0). Not used; leave open.
R_NCO_LS1
38
O
O
Receive NCO (LS1). Not used; leave open.
CLIPB
84
O
O
Clip Interrupt. This status output goes low for one ADC_CLK clock
cycle whenever clipping is detected. This signal can be for monitoring
incoming data for saturation. Not used; leave open.
T_INTER_BYTEB
5
O
O
Transmit Interleaved Data Bit Input Enable. Not used; leave open.
T_FAST_BYTEB
4
O
O
Transmit Fast Data Bit Input Enable. Not used; leave open.
T_CLK_AS0
6
I
I
Transmit Data Clock (AS1). Not used; leave open.
T_DAT_AS1
12
I
I
Transmit Data (AS1). Not used; leave open.
T_DAT_AS0
7
I
I
Transmit Data (AS0). Not used; leave open.
T_CLK_LS1
13
I/O
I/O
Transmit Data Clock (LS1). Not used; leave open.
T_DAT_LS1
14
I
I
Transmit Data (LS1). Not used; leave open.
TXSOC1
21
I
I
TC1 Block Transmit Start of Cell. Not used; leave open.
LTR
81
O
O
8 kHz Local Timing Reference. Not used; leave open.
NTR
8
I/O
I/O
8 kHz Network Timing Reference. Not used; leave open.
NTR_CTL
29
I
I
Network Timing Reference I/O Control. Not used; leave open.
BIT_CLOCK
17
O
O
Serial Data Bit Clock Output. Used to synchronize the serial input
and output data bit streams, enables, and superframe qualifiers. Not
used; leave open.
NOTES:
I/O Types: See Table 3-8.
100427B
Conexant
3-15
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-8. CX11627 ADDP Input/Output Type Descriptions
I/O Type
Description
It
Digital input, +5 V tolerant, CIN = 8 pF
It/Ot4
Digital input, +5 V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Ith
Digital input, +5 V tolerant, with hysteresis, CIN = 8 pF
Itpd
Digital input, +5 V tolerant, 75k Ω pull-down, CIN = 8 pF
Itpu
Digital input, +5 V tolerant, 75k Ω pull-up, CIN = 8 pF
Itpu/Ot4
Digital input, +5 V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Otts4
Digital output, 3-State, 4 mA, ZINT =80 Ω
NOTES:
1. See DC characteristics in Table 3-9.
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.
3-16
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.2.2
CX11627 ADDP Electrical and Environmental Specifications
CX11627 ADDP DC electrical characteristics are listed in Table 3-9.
CX11627 ADDP operating conditions are specified in Table 3-10.
CX11627 ADDP absolute maximum ratings are stated in Table 3-11.
CX11627 ADDP power consumption is listed in Table 3-12.
Table 3-9. CX11627 ADDP DC Electrical Characteristics
Parameter
Symbol
Min.
Input high voltage
Input low voltage
Input leakage current
VIH
VIL
IIL/IIH
0.9*VDDO
GND
-10
Input capacitance
Output high voltage
Output low voltage
Three-state output leakage
CIN
VOH
VOL
ILK
Output capacitance
Three-state output leakage
COUT
ILK
Input/output capacitance
Typ.
Max.
Units
VDDO
0.1*VDDO
10
VDC
VDC
2.9
0.9*VDDO
GND
10
VDDO
0.1*VDDO
10
3.1
-10
CINOUT
10
3.9
Test Conditions
(see Note 1)
µA
pF
VDC
VDC
µA
pF
µA
pF
NOTES:
1. Test Conditions (unless otherwise stated):
VDDcore = +2.5 ± 0.2 VDC
VDDO = +3.3 ± 0.3 VDC;
VIN (MAX) = +3.6 for VGG connected to +3.3V;
VIN (MAX) = +5.25V for VGG connected to +5V.
2.
Current flow out of the device is shown as minus.
100427B
Conexant
3-17
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-10. CX11627 ADDP Operating Conditions
Parameter
Core power supply
I/O power supply
Operating temperature
Symbol
Min
Typ
Max
Units
VDDcore
VDDO
TA
2.3
3.0
0
2.5
3.3
2.7
3.6
+70
VDC
VDC
°C
Table 3-11. CX11627 ADDP Absolute Maximum Ratings
Parameter
Core power supply
I/O power supply
Input voltage
Storage temperature
Symbol
Min
Max
Units
VDDcore
VDDO
VIN
TS
-0.35
-0.35
-0.3
-65
2.8
3.7
VDD + 0.3
150
VDC
VDC
VDC
°C
Table 3-12. CX11627 ADDP Power Consumption
Mode
VDDcore (+2.5 V)
VDDO (+3.3 V)
Typ. Current
(mA)
Max. Current
(mA)
Typ. Power
(mW)
Max. Power
(mW)
190
35
210
65
475
115
570
235
NOTES:
1. Operating voltage: VDDcore = +2.5 VDC ± 0.2 VDC
VDDO = +3.3 VDC ± 0.3 VDC.
2. Test conditions:
VDDcore = +2.5 VDC for typical values; VDDcore = +2.7 VDC for maximum values.
VDDO = +3.3 VDC for typical values; VDDO = +3.6 VDC for maximum values
3-18
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.3
CX20431 AFE Hardware Interface Signals
3.3.1
CX20431 AFE Hardware Signals, Pin Assignments, and Signal Definitions
CX20431 AFE hardware interface signals are shown in Figure 3-5.
CX20431 AFE pin assignments are shown in Figure 3-6.
CX20431 AFE hardware interface signals are defined in Table 3-13. DC characteristics are listed in Table 3-15.
P5200 UIC
AFE_SCLK
AFE_STB
AFE_CTRLIN
AFE_CTRLOUT
AFE_WAKEUP
AFE_RST#
CX11627 ADDP
RX00
RX08
TX00
AFE_STRB
+3.3V
11
15
16
17
18
13
24
23
22
19
21
5
9
+3.3V through filter
6
10
14
25
27
CLKIN
CTRL_STRB
CTRL_IN
CTRL_OUT
WAKEUP
POR
INP_HYBR_RX
INM_HYBR_RX
OUTP_TX
OUTM_TX
RX0
RX1
TX0
STROBE
VREFP
CX20431
ANALOG FRONT END
(AFE)
32-PIN TQFP
AVDD
AVDD
AVSS
AVSS
DVSS
DVSS
DVSS
HYBRID
7
8
INP_DRV
INM_DRV
10
uF
30
0.1u
F
VREFM
10
uF
31
0.1u
F
RBIAS
INP_RX
INM_RX
NC
NC
NC
NC
CX20441 LD
29
0.1u
F
VC
DVDD
1
2
32
10
uF
30K
3
4
12
20
26
28
NC
100427_F3-05_HIS 20431 32T
DVSS
NC
DVSS
26
25
28
27
VC
VREFP
NC
30
29
RBIAS
VREFM
32
31
Figure 3-5. CX20431 AFE Hardware Interface Signals
INP_HYBR_RX
1
24
RX0
INM_HYBR_RX
2
23
RX1
INP_RX
3
22
TX0
INM_RX
4
21
DVDD
14
15
16
CTRL_STRB
CTRL_IN
NC
POR
DVSS
11
12
13
CLKIN
7
8
9
OUTP_TX
OUTM_TX
CX20431
10
6
AVSS
5
AVSS
AVDD
AVDD
20
NC
19
STROBE
18
WAKEUP
17
CTRL_OUT
100427_F3-06 PO_20431_32T
Figure 3-6. CX20431 AFE Pin Signals - 32-Pin TQFP
100427B
Conexant
3-19
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-13. CX20431 AFE Hardware Signal Definitions
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
CLOCK INTERFACE
I
Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator
(VCXO) output through 51 Ω.
CLKIN
11
It
CTRL_STRB
15
I
It
Strobe In. Strobe input for the control interface. Connect to UIC
AFE_STB.
CTRL_IN
16
I
It
Control In. Serial digital data received from the UIC. Connect to UIC
AFE_CTRLIN.
CTRL_OUT
17
O
Ot
Control Out. Serial digital data sent to the UIC. Connect to UIC
AFE_CTRLOUT.
WAKEUP
18
O
Ot
Wakeup. Digital output for tone detection mode. Connect to UIC
AFE_WAKEUP.
POR#
13
I
It
Reset. Active low power-On reset. Connect to UIC AFE_RST#.
P5200 UIC CONTROL AND CX11627 ADDP SERIAL INTERFACE
P5200 UIC CONTROL AND CX11627 ADDP SERIAL INTERFACE
Strobe. Strobe output for the data interface. The negative STROBE
edge triggers the transfer of serial transmit data on TX0 from the
ADDP to the AFE and triggers the transfer of serial receive data on
RX0 and RX1 from the AFE to the ADDP. Connect to ADDP
AFE_STRB and to UIC AFE_SCLK.
STROBE
19
O
Ot
RX0
24
O
Ot
Receive Data. Digital receive serial data output on RX0 is transferred
to the ADDP. The negative edge of the STROBE signal from the AFE
clocks the data into the ADDP. Connect to ADDP AFE_RX00.
RX1
23
O
Ot
Receive Data. Digital receive serial data output on RX1 is transferred
data to the ADDP. The negative edge of the STROBE signal from the
AFE clocks the data into the ADDP. Connect to ADDP AFE_RX08.
TX0
22
I
It
Transmit Data. Digital transmit serial data input on TX0 is transferred
from the ADDP. The negative edge of the STROBE signal clocks the
data from the ADDP. Connect to ADDP AFE_TX00.
CX11627 ADDP SERIAL INTERFACE
HYBRID INTERFACE
INP_HYBR_RX
1
I
Ia
Receive Input Positive from Hybrid. Receive input positive from the
hybrid circuit. AC couple through 1 µF.
INM_HYBR_RX
2
I
Ia
Receive Input Negative from Hybrid. Receive input negative from
the hybrid circuit. AC couple through 1 µF.
CX20441 LINE DRIVER INTERFACE
OUTP_TX
7
O
Oa
Transmit Output Positive. Transmit output positive to the LD.
Connect to LD INP_DRV.
OUTM_TX
8
O
Oa
Transmit Output Negative. Transmit output negative to the LD.
Connect to LD INM_DRV.
POWER AND GROUND
VREFP
29
REF
REF
Analog Reference Voltage (+2.5V). Connect to GND through 10 µF
and 0.1 µF in parallel.
VC
30
REF
REF
Analog Reference Voltage (+1.5V). Connect to GND through 10 µF
and 0.1 µF in parallel.
VREFM
31
REF
REF
Analog Reference Voltage (+0.5V). Connect to GND through 10 µF
and 0.1 µF in parallel.
RBIAS
32
REF
REF
Analog Current Reference. Current setting external resistor.
Connect to GND through 30 kΩ resistor (+1%).
DVDD
21
PWR
PWR
Digital Circuits Supply. Connect to +3.3V.
AVDD
5, 9
PWR
PWR
Analog Circuits Supply Voltage. Connect to +3.3V through filter.
DVSS
14, 25, 27
GND
GND
Digital Circuits Ground. Connect to GND.
AVSS
6, 10
AGND
AGND
Analog Circuit Ground. Connect to GND.
3-20
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-3. CX20431 AFE Hardware Signal Definitions (Continued)
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
NOT USED
INP_RX
3
I
Ia
Receive Input Positive. Not used. Leave open.
INM_RX
4
I
Ia
Receive Input Negative. Not used. Leave open.
NC
12, 20, 26, 28
No Connect. These pins are not connected to internal circuitry.
NOTES:
I/O Types: See Table 3-15.
Table 3-14. CX20431 AFE Input/Output Type Descriptions
I/O Type
Description
Ia
It
Analog input
Digital input, +5V tolerant, CIN = 8 pF
It/Ot4
Digital input, +5V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Ith
Digital input, +5V tolerant, with hysteresis, CIN = 8 pF
Itpd
Digital input, +5V tolerant, 75k Ω pull-down, CIN = 8 pF
Itpu
Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF
Itpu/Ot4
Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω
Oa
Otts4
Analog Output
Digital output, 3-State, 4 mA, ZINT =80 Ω
NOTES:
1. See DC characteristics in Table 3-15 and analog electrical characteristics in Table 3-16.
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.
100427B
Conexant
3-21
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.3.2
CX20431 AFE Electrical and Environmental Specifications
CX20431 AFE DC electrical characteristics are listed Table 3-15.
CX20431 AFE analog electrical characteristics are listed Table 3-16.
CX20431 AFE operating conditions are specified in Table 3-17.
CX20431 AFE absolute maximum ratings are stated in Table 3-18.
CX20431 AFE power consumption is listed in Table 3-19.
Table 3-15. CX20431 AFE DC Electrical Characteristics
Parameter
Symbol
Min.
VIH
VIL
IIL
VOH
VOL
IOLK
Input high voltage
Input low voltage
Input leakage current
Output high voltage
Output low voltage
Output leakage current
Typ.
Max.
Units
0.65*VDD
-0.35
-10
VDD+0.35
0.25*VDD
10
VDC
VDC
0.85*VDD
0
10
VDD
0.1*VDD
10
Test Conditions
(see Note 1)
µA
VDC
VDC
µA
NOTES:
1. Test Conditions (unless otherwise stated):
DVDD and AVDD = +5.0 ± 0.25 VDC
VIN (MAX) = +5.25V
2.
Current flow out of the device is shown as minus.
Table 3-16. CX20431 AFE Analog Electrical Characteristics
Parameter
Min
Typ
Max
Units
2
2.1
20
Vp
Vp
nV/sqrt (Hz)
nV/sqrt (Hz)
dBFS
Receive Path
Differential input amplitude of in-band signal
Differential input amplitude of echo
Input-referred noise density in 170 kHz – 1104 kHz, gain = 27 dB
Input-referred noise density in 170 kHz – 1104 kHz, gain = 0 dB
Intermodulation product falling in the downstream band, from an echo tone
with an in band signal, gain = 27 dB
Intermodulation product falling in the downstream band, from 2 in band tones,
gain = 0 dB
In-band ripple
Input resistance (single-ended)
15
150
-80
-80
dBFS
1.5
dB
85
Input capacitance (single-ended)
90
kΩ
pF
Transmit Path
Differential output amplitude
Output-referred noise density in 25 kHz – 132 kHz
Output-referred noise density in 170 kHz – 1104 kHz
Intermodulation product from 2 in band tones
In-band ripple
Output resistive load (single-ended)
5
Output capacitive load (single-ended)
3-22
2
250
20
-80
1.25
20
300
20
Conexant
Vp
nV/sqrt (Hz)
nV/sqrt (Hz)
dBV
dB
kΩ
pF
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-17. CX20431 AFE Operating Conditions
Parameter
Power supply
Operating ambient temperature
Symbol
Min
Typ
Max
Units
DVDD and AVDD
TA
3.135
0
3.3
3.465
70
VDC
°C
Table 3-18. CX20431 AFE Absolute Maximum Ratings
Parameter
Symbol
Min
Max
DVDD and AVDD
-0.35
3.6
VDC
Digital input voltage
VIN
-0.35
DVDD +0.35
VDC
Analog input voltage
VIN
-0.35
AVDD +0.35
VDC
Storage temperature
TS
-65
150
°C
Power supply
Units
Table 3-19. CX20431 AFE Power Consumption
Mode
DVDD
AVDD
Max.
Current
(mA)
Typ.
Current
(mA)
25
40.5
Typ.
Power
(mW)
Max.
Power
(mW)
83
134
NOTES:
3. Operating voltage: DVDD and AVDD = +3.3 VDC ± 0.165 VDC.
4. Test conditions:
DVDD and AVDD = +3.3 VDC for typical values; DVDDO and AVDD = +3.465 VDC for maximum values.
100427B
Conexant
3-23
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.4
CX20441 LD Hardware Interface Signals
3.4.1
CX20441 LD Hardware Signals, Pin Assignments, and Signal Definitions
CX20441 LD hardware interface signals are shown in Figure 3-7.
CX20441 LD pin assignments are shown in Figure 3-8.
CX20441 LD hardware interface signals are defined in Table 3-20.
3-24
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
P5200 UIC
CX20431 AFE
LD_PC
OUTP_TX
OUTM_TX
5
23
2
PWRDWN#
OUTP_DRV
OUTM_DRV
INP_DRV
INM_DRV
RBIAS
+5V through filter
6
19
8
17
AVDD
AVDD
AVSS
AVSS
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
CX20441
LINE DRIVER
(LD)
32-PIN TQFP
18
7
4
HYBRID
124K
1
3
9
10
11
12
13
14
15
16
20
21
22
24
25
26
27
28
29
30
31
32
NC
100427_F3-7_HIS 20441 32T
NC
NC
NC
26
25
NC
NC
1
2
24
23
3
22
21
9
12
13
14
15
16
NC
NC
NC
NC
NC
8
CX20441
10
11
AVSS
20
19
NC
AVDD
OUTM_DRV
4
5
6
7
NC
NC
NC
INM_DRV
NC
RBIAS
PWRDWN#
28
27
NC
32
31
30
29
NC
NC
Figure 3-7. CX20441 LD Hardware Interface Signals
NC
INP_DRV
NC
NC
NC
18
AVDD
OUTP_DRV
17
AVSS
100427_F3-8 PO_20441_32T
Figure 3-8. CX20441 LD Pin Signals - 32-Pin TQFP
100427B
Conexant
3-25
AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-20. CX20441 LD Hardware Signal Definitions
Signal Name
Pin
I/O
I/O Type
Signal Name/Description
P5200 UIC INTERFACE
Power Down. Active low power down control input. Connect to UIC
AFE_RST#
PWRDWN#
5
I
It
INP_DRV
23
I
Ia
Input Driver Positive. Transmit driver input positive from the AFE.
Connect to AFE OUTP_TX through 1 µF.
INM_DRV
2
I
Ia
Input Driver Negative. Transmit driver input negative input from the
AFE. Connect to AFE OUTM_TX through 1 µF.
OUTP_DRV
18
O
Oa
Output Driver Positive. Transmit driver output positive to the hybrid
circuit. Imax = 280 mA.
OUTM_DRV
7
O
Oa
Output Driver Negative Transmit driver output negative to the hybrid
circuit. Imax = 280 mA.
CX20431 AFE INTERFACE
HYBRID INTERFACE
MISCELLANEOUS
RBIAS
4
REF
REF
Bias. Current setting external resistor. Connect to GND through
124 kΩ resistor (+1%).
POWER AND GROUND
AVDD
6, 19
PWR
PWR
AVSS
8, 17
GND
GND
Analog Power. Connect to +5V through filter.
Analog Ground. Connect to GND.
NO CONNECT
NC
No Connect. These pins are not connected to internal circuitry.
1, 3, 9-16, 20-22,
24-32
NOTES:
I/O Types: See Table 3-21.
Table 3-21. CX20441 LD Input/Output Type Descriptions
I/O Type
Description
It
Digital input, +5V tolerant, CIN = 8 pF
Ia
Oa
Analog input
Analog output
NOTES:
1. See analog electrical characteristics in Table 3-22.
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.
3-26
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
3.4.2
CX20441 LD Electrical and Environmental Specifications
CX20441 LD analog electrical characteristics are listed Table 3-22.
CX20441 LD operating conditions are specified in Table 3-23.
CX20441 LD absolute maximum ratings are stated in Table 3-24.
CX20441 LD power consumption is listed in Table 3-25.
Table 3-22. CX20441 LD Analog Electrical Characteristics
Parameter
Min
Differential output amplitude
Differential input amplitude
Input signal bandwidth
Input referred noise density in 170 kHz – 1104 kHz
Input referred noise density beyond 1104 kHz
Intermodulation product falling in the downstream band from two in-band
tones (100 kHz and 120 kHz)
Differential gain
In-band ripple
Input capacitance (single-ended)
Input resistance (single-ended)
Typ
25..132
5
Max
Units
4.485
2.0
Vp
Vp
kHz
nV/sqrt (Hz)
nV/sqrt (Hz)
dBV
10
270
-75
7.014
0.05
15
dB
dB
PF
10
kΩ
pF
20
Output capacitance (single-ended)
Output resistive load (single-ended)
18.36
Ω
Table 3-23. CX20441 LD Operating Conditions
Parameter
Symbol
Min
Typ
Max
Units
Power supply
Operating ambient temperature
AVDD
TA
4.75
0
5
5.25
70
VDC
°C
Table 3-24. CX20441 LD Absolute Maximum Ratings
Parameter
Power supply
Symbol
Min
Max
Units
AVDD
-0.35
7
VDC
Digital input voltage
VIN
-0.35
AVDD + 0.35
VDC
Analog input voltage
VIN
-0.35
AVDD + 0.35
VDC
Storage temperature
TS
-65
150
°C
Table 3-25. CX20441 LD Power Consumption
Mode
AVDD
Typ.
Current
(mA)
Max.
Current
(mA)
Typ.
Power
(mW)
Max.
Power
(mW)
18
24
90
126
NOTES:
1. Operating voltage: AVDD = +5.0 VDC ± 0.25 VDC.
2. Test conditions:
AVDD = +5.0 VDC for typical values; AVDD = +5.25 VDC for maximum values; modem in Showtime mode.
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3-28
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.
USB General Operation
4.1
Descriptors
USB devices report their attributes using descriptors. A descriptor is a data structure with a defined format, which begins with
a byte-wide field that contains the total number of bytes in the descriptor followed by a byte-wide field that identifies the
descriptor type.
Class and vendor specific descriptors may be returned in one of two ways. Class and vendor specific descriptors that are
related to standard descriptors are returned in the same data buffer as the standard descriptor. If a class or vendor specific
descriptor is not related to a standard descriptor, it is returned using class or vendor specific requests.
4.1.1
Device Descriptor
A device descriptor describes general information about a USB device, which applies globally to the device and all of the
device’s configurations (Table 4-1). A USB device has only one device descriptor. Vendor ID, Product ID, and Device Release
Number can be changed. The Manufacturer Name, Product Name, and Serial Number can also be customized.
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AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 4-1. Device Descriptors
Offset
Field
Size
Value
Default
(Hex.)
Description
Size of this descriptor in bytes.
DEVICE Descriptor Type.
USB Specification Release Number in Binary-Coded Decimal (i.e.,
2.10 is 0x210). This field identifies the release of the USB
Specification that the device and its descriptors are compliant with.
Class code (assigned by USB).
If this field is reset to 0, each interface within a configuration
specifies its own class information and the various interfaces
operate independently.
If this field is set to a value between 1 and 0xFE, the device
supports different class specifications on different interfaces and the
interfaces may not operate independently. This value identifies the
class definition used for the aggregate interfaces. (For example, a
CD-ROM device with audio and digital data interfaces that require
transport control to eject CDs or start them spinning.)
If this field is set to 0xFF, the device class is vendor specific.
Subclass code (assigned by USB).
These codes are qualified by the value of the bDeviceClass field.
If the bDeviceClass field is reset to 0, this field must also be reset to
0.
If the bDeviceClass field is not set to 0xFF, all values are reserved
for assignment by USB.
Protocol code (assigned by USB). These codes are qualified by the
value of the bDeviceClass and the bDeviceSubClass fields. If a
device supports class-specific protocols on a device basis as
opposed to an interface basis, this code identifies the protocols that
the device uses as defined by the specification of the device class.
If this field is reset to 0, the device does not use class specific
protocols on a device basis. However, it may use class specific
protocols on an interface basis.
If this field is set to 0xFF, the device uses a vendor specific protocol
on a device basis.
Maximum packet size for endpoint zero (only 8, 16, 32, or 64 are
valid).
Vendor ID (assigned by USB).
Product ID (assigned by the manufacturer).
Device release number in binary-coded decimal.
Index of string descriptor describing manufacturer.
Index of string descriptor describing product.
Index of string descriptor describing the device’s serial number.
Number of possible configurations.
0
1
2
bLength
bDescriptorType
bcdUSB
1
1
2
Number
Constant
BCD
12
01
0110
4
bDeviceClass
1
Class
00
5
bDeviceSubClass
1
SubClass
00
6
bDeviceProtocol
1
Protocol
00
7
bMaxPacketSize0
1
Number
40
8
10
12
14
15
16
17
idVendor
idProduct
bcdDevice
iManufacturer
iProduct
iSerialNumber
bNumConfigurations
2
2
2
1
1
1
1
ID
ID
BCD
Index
Index
Index
Number
0572
CAFE
0001
01
02
03
01
4-2
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.2
Configuration Descriptor
A configuration descriptor describes information about a specific device configuration (see Table 4-2). The descriptor
describes the number of interfaces provided by the configuration.
Table 4-2. Configuration Descriptors
Offset
Field
Size
Value
Default
(Hex.)
Description
Size of this descriptor in bytes.
CONFIGURATION.
Total length of data returned for this configuration. Includes the
combined length of all descriptors (configuration, interface,
endpoint, and class or vendor specific) returned for this
configuration.
Number of interfaces supported by this configuration.
Value to use as an argument to Set Configuration to select this
configuration.
Index of string descriptor describing this configuration.
Configuration characteristics
D7
Bus Powered
D6
Self Powered
D5
Remote Wakeup
D4..0 Reserved (reset to 0)
A device configuration that uses power from the bus and a local
source sets both D7 and D6. The actual power source at runtime
may be determined using the Get Status device request.
If a device configuration supports remote wakeup, D5 is set to 1.
Maximum power consumption of USB device from the bus in this
specific configuration when the device is fully operational.
Expressed in 2 mA units (i.e., 50 = 100 mA).
Note: A device configuration reports whether the configuration is
bus-powered or self-powered. Device status reports whether the
device is currently self-powered. If a device is disconnected from
its external power source, it updates device status to indicate that
it is no longer self-powered.
A device may not increase its power draw from the bus, when it
loses its external power source, beyond the amount reported by its
configuration.
If a device can continue to operate when disconnected from its
external power source, it continues to do so. If the device cannot
continue to operate, it fails operations it can no longer support.
Host software may determine the cause of the failure by checking
the status and noting the loss of the device’s power source.
0
1
2
bLength
bDescriptorType
wTotalLength
1
1
2
Number
Constant
Number
09
02
0043
4
5
bNumInterfaces
bConfigurationValue
1
1
Number
Number
01
01
6
7
iConfiguration
bmAttributes
1
1
Index
Bitmap
00
A0
8
MaxPower
1
mA
FA
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.3
Interface Descriptor
An interface descriptor describes a specific interface provided by the associated configuration (see Table 4-3). It is always
returned as part of a configuration descriptor. An interface descriptor never includes endpoint zero in the number of
endpoints.
Table 4-3. Interface Descriptors
Offset
Field
Size
Value
Default
(Hex.)
Description
Size of this descriptor in bytes.
INTERFACE Descriptor Type.
Number of interface. Zero-based value identifying the index in the
array of concurrent interfaces supported by this configuration.
Value used to select alternate setting for the interface identified in
the prior field.
Number of endpoints used by this interface (excluding endpoint
zero). If this value is 0, this interface only uses endpoint zero.
Class code (assigned by USB).
If this field is reset to 0, the interface does not belong to any USB
specified device class.
If this field is set to 0xFF, the interface class is vendor specific.
All other values are reserved for assignment by USB.
Subclass code (assigned by USB). These codes are qualified by the
value of the bInterfaceClass field.
0
1
2
bLength
bDescriptorType
bInterfaceNumber
1
1
1
Number
Constant
Number
09
04
00
3
bAlternateSetting
1
Number
00
4
bNumEndpoints
1
Number
07
5
bInterfaceClass
1
Class
00
6
bInterfaceSubClass
1
SubClass
00
If the bInterfaceClass field is reset to 0, this field must also be
reset to 0.
7
bInterfaceProtocol
1
Protocol
00
8
iInterface
1
Index
00
4-4
If the bInterfaceClass field is not set to 0xFF, all values are
reserved for assignment by USB.
Protocol code (assigned by USB). These codes are qualified by the
value of the bInterfaceClass and the bInterfaceSubClass
fields. If an interface supports class-specific requests, this code
identifies the protocols that the device uses as defined by the
specification of the device class.
If this field is reset to 0, the device does not use a class specific
protocol on this interface.
If this field is set to 0xFF, the device uses a vendor specific protocol
for this interface.
Index of string descriptor describing this interface.
Conexant
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.4
Endpoint Descriptor
Each endpoint used for an interface has its own descriptor, which contains the information required by the host to determine
the bandwidth requirements of each endpoint (see Table 4-4). An endpoint descriptor, like an Interface Descriptor, is always
returned as part of a configuration descriptor. The default values are:
Bulk In 1:
07058102400000
Bulk Out 1:
07050102400000
Bulk In 2:
07058202400000
Bulk Out 2:
07050202400000
Bulk In 3:
07058302400000
Bulk Out 3:
07050302400000
Bulk In 4:
07058402400000
Bulk Out 4:
07050402400000
Table 4-4. Endpoint Descriptors
Offset
Size
Value
Description
0
1
2
bLength
bDescriptorType
bEndpointAddress
1
1
1
Number
Constant
Endpoint
3
bmAttributes
1
Bit Map
4
wMaxPacketSize
2
Number
6
bInterval
1
Number
Size of this descriptor in bytes.
ENDPOINT Descriptor Type.
The address of the endpoint on the USB device described by this
descriptor. The address is encoded as follows:
Bit 0..3: The endpoint number
Bit 4..6: Reserved, reset to 0
Bit 7:
Direction, ignored for control endpoints
0
OUT endpoint
1
IN endpoint
This field describes the endpoint’s attributes when it is configured
using the bConfigurationValue.
Bit 0..1: Transfer Type
00 Control
01 Isochronous
10 Bulk
11 Interrupt
All other bits are reserved
Maximum packet size this endpoint is capable of sending or receiving
when this configuration is selected.
For isochronous endpoints, this value is used to reserve the bus time
in the schedule, required for the per frame data payloads. The pipe
may, on an ongoing basis, actually use less bandwidth than that
reserved. The device reports, if necessary, the actual bandwidth used
via its normal, non-USB defined mechanisms.
For interrupt, bulk, and control endpoints smaller data payloads may
be sent, but will terminate the transfer and may or may not require
intervention to restart. Refer to Chapter 5 for more information.
Interval for polling endpoint for data transfers. Expressed in
milliseconds.
This field is ignored for bulk and control endpoints. For isochronous
endpoints this field must be set to 1. For interrupt endpoints, this field
may range from 1 to 255.
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.5
Enumeration
The enumeration process consists of the following steps:
1.
Get device descriptor. The host requests and reads the device descriptor to determine maximum packet size.
2.
Set address. The host sends the function address in a data packet using function endpoint 0. Device firmware interprets
this data.
3.
Get device descriptor. The host requests and reads the device descriptor to determine such information as device class,
USB Specification compliance level, maximum packet size for endpoint 0, vendor id, product id. Etc.
4.
Get configuration descriptor. The host requests and reads the device configuration descriptor to determine such
information as the number of interfaces and endpoints; endpoint transfer type, packet size, and direction; power source
;maximum power; etc. When the host requests the configuration descriptor, all related interface and endpoint descriptors
are returned.
5.
Set configuration. The host assigns a configuration value to the device to establish the current configuration.
4.1.6
Endpoint Pairs
Data transfers with the host are made to/from endpoint pairs on the USB module. The five function endpoint pairs are listed in
Table 4-5.
Table 4-5. Endpoint Pairs
4.1.7
Endpoint Pair
Max. Packet Size
Max. Packet Size
USB Data Transfer Types
Function Endpoint 0
Function Endpoint 1
Function Endpoint 2
Function Endpoint 3
Function Endpoint 4
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
64 bytes
Control
Bulk
Bulk
Bulk
Bulk
Language ID Table
See Language ID data in Table 4-6.
Table 4-6. Language ID Table
Offset
0
1
2
4.1.8
Field
bLength
bDescriptorType
Size
Value
Default
(Hex.)
1
1
2
Number
Constant
Number
04
03
0409
Description
Size of this descriptor in bytes.
INTERFACE Descriptor Type.
Manufacturer String Table
See Manufacturer String data in Table 4-7.
Table 4-7. Manufacturer String Table
Offset
0
1
2
4-6
Field
bLength
bDescriptorType
Size
Value
Default
(Hex.)
1
1
2
Number
Constant
04
03
00
'-'
Description
Size of this descriptor in bytes.
INTERFACE Descriptor Type.
Manufacturer string, in unicode
Conexant
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AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.9
Product ID String Table
See Product ID String data in Table 4-8.
Table 4-8. Product ID String Table
Offset
0
1
2
100427B
Field
bLength
bDescriptorType
Size
Value
Default
(Hex.)
1
1
28
Number
Constant
1E
03
00
'A'
00
'D'
00
'S'
00
'L'
00
''
00
'U'
00
'S'
00
'B'
00
''
00
'M'
00
'O'
00
'D'
00
'E'
00
'M'
Description
Size of this descriptor in bytes.
INTERFACE Descriptor Type.
Product ID string, in unicode
Conexant
4-7
AccessRunner ADSL-USB Modem Device Set Data Sheet
4.1.10
Serial Number String Table
See Serial Number String data in Table 4-9.
Table 4-9. Serial Number String Table
Offset
Field
Size
Value
Default
(Hex.)
Description
0
bLength
1
Number
12
1
bDescriptorType
1
Constant
03
INTERFACE Descriptor Type.
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
Serial number string, in unicode. A serial number string that is all FF
will cause the firmware to generate a pseudorandom serial number
string.
2
4-8
16
Size of this descriptor in bytes.
Conexant
100427B
AccessRunner ADSL-USB Modem Device Set Data Sheet
5.
Package Dimensions
The package dimensions are shown in Figure 5-1 (176-pin TQFP) and Figure 5-2 (32-pin TQFP).
16.00 ± 0.15
14.00 ± 0.05
12.00 REF
0.500 BSC
14.00 ± 0.05
13.87 ± 0.05
16.00 ± 0.15
14.00 ± 0.05
12.00 REF
PIN 1
REF
0.22 ± 0.05
13.87 ± 0.05
DETAIL A
14.00 ± 0.05
0.50 REF
1.00 ± .05
0.14 ± .03
0.60
+0.15, -0.10
0.10 ± .05
COPLANARITY = 0.08 MAX.
Ref. 100-PIN TQFP (GP00-D530)
1.00 REF
DETAIL A
PD-TQFP-100-D530 (032699)
Figure 5-1. Package Dimensions - 176-Pin TQFP
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5-1
AccessRunner ADSL-USB Modem Device Set Data Sheet
D
D1
D2
PIN 1
REF
D
D1
D1 D2
b
e
DETAIL A
Dim.
A
A1
D1
A2
D
D1
A
A2
Inches*
Max.
Min.
Millimeters
Max.
Min.
1.6 MAX
0.0630 MAX
0.15
0.05
1.4 REF
0.0020
9.25
8.75
7.0 REF
0.3445
0.0059
0.0551 REF
0.3642
0.2756 REF
D2
5.6 REF
L
0.0197 0.0295
L1
0.75
0.5
1.0 REF
e
0.80 BSC
0.0315 BSC
0.2205 REF
0.0394 REF
b
0.30
0.40
0.0118
0.0157
c
0.19
0.13
0.10 MAX
0.0051
0.0075
Coplanarity
0.004 MAX
Ref: 32-PIN TQFP (GP00-D262)
c
A1
L
* Metric values (millimeters) should be used for
PCB layout. English values (inches) are
converted from metric values and may include
round-off errors.
L1
DETAIL A
PD-TQFP-32 (040395)
Figure 5-2. Package Dimensions - 32-Pin TQFP
5-2
Conexant
100427B
NOTES
0.0 Sales Offices
Further Information
[email protected]
(800) 854-8099 (North America)
(949) 483-6996 (International)
Printed in USA
World Headquarters
Conexant Systems, Inc.
4311 Jamboree Road
Newport Beach, CA
92660-3007
Phone: (949) 483-4600
Fax 1: (949) 483-4078
Fax 2: (949) 483-4391
Europe North – England
Phone: +44 1344 486444
Fax:
+44 1344 486555
Europe – Israel/Greece
Phone: +972 9 9524000
Fax:
+972 9 9573732
Europe South – France
Phone: +33 1 41 44 36 51
Fax:
+33 1 41 44 36 90
Europe Mediterranean – Italy
Phone: +39 02 93179911
Fax:
+39 02 93179913
Americas
U.S. Northwest/
Pacific Northwest – Santa Clara
Phone: (408) 249-9696
Fax:
(408) 249-7113
U.S. Southwest – Los Angeles
Phone: (805) 376-0559
Fax:
(805) 376-8180
Europe – Sweden
Phone: +46 (0) 8 5091 4319
Fax:
+46 (0) 8 590 041 10
Europe – Finland
Phone: +358 (0) 9 85 666 435
Fax:
+358 (0) 9 85 666 220
Asia – Pacific
U.S. Southwest – Orange County
Phone: (949) 483-9119
Fax:
(949) 483-9090
Taiwan
Phone: (886-2) 2-720-0282
Fax:
(886-2) 2-757-6760
U.S. Southwest – San Diego
Phone: (858) 713-3374
Fax:
(858) 713-4001
Australia
Phone: (61-2) 9869 4088
Fax:
(61-2) 9869 4077
U.S. North Central – Illinois
Phone: (630) 773-3454
Fax:
(630) 773-3907
China – Central
Phone: 86-21-6361-2515
Fax:
86-21-6361-2516
U.S. South Central – Texas
Phone: (972) 733-0723
Fax:
(972) 407-0639
China – South
Phone: (852) 2 827-0181
Fax:
(852) 2 827-6488
U.S. Northeast – Massachusetts
Phone: (978) 367-3200
Fax:
(978) 256-6868
China – South (Satellite)
Phone: (86) 755-5182495
U.S. Southeast – North Carolina
Phone: (919) 858-9110
Fax:
(919) 858-8669
U.S. Southeast – Florida/
South America
Phone: (727) 799-8406
Fax:
(727) 799-8306
U.S. Mid-Atlantic – Pennsylvania
Phone: (215) 244-6784
Fax:
(215) 244-9292
Canada – Ontario
Phone: (613) 271-2358
Fax:
(613) 271-2359
China – North
Phone: (86-10) 8529-9777
Fax:
(86-10) 8529-9778
India
Phone: (91-11) 692-4789
Fax:
(91-11) 692-4712
Korea
Phone: (82-2) 565-2880
Fax:
(82-2) 565-1440
Korea (Satellite)
Phone: (82-53) 745-2880
Fax:
(82-53) 745-1440
Singapore
Phone: (65) 737 7355
Fax:
(65) 737 9077
Europe
Europe Central – Germany
Phone: +49 89 829-1320
Fax:
+49 89 834-2734
Japan
Phone: (81-3) 5371 1520
Fax:
(81-3) 5371 1501
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