CONEXANT FM336

FM336Plus
V.34/Group 3 High Performance Fax Modem Family
The Conexant™ FM336Plus High Performance Fax Modem family offers
ITU-T V.34 half-duplex mode operation that supports synchronous Group 3
facsimile send and receive speeds up to 33600 bits per second (bps).
The FM336Plus-D and FM336Plus-D90 support ITU-T V.34 duplex data
and synchronous/asynchronous modes with rates up to 33600 bps. The
FM336Plus-D90 also supports ITU-T V.90 PCM mode, which can receive
data at speeds up to 56 kbps.
The device has low voltage operation and is housed in a 100-pin Plastic Quad
Flat Package (PQFP). The modem’s small size and low power consumption
allow the design of compact system enclosures for use in industrial, office, and
home environments. Table 1 lists the FM336Plus Modem Family models and
features.
Utilizing V.34 and V.90 techniques to optimize modem configuration for line
conditions, the modem connects at the optimal selected data rate that the
channel can support from 2400 bps up to 56000 bps. The modem can operate
over the Public Switched Telephone Network (PSTN) through a line terminator
provided by a Data Access Arrangement (DAA).
The FM336Plus is backward pin compatible with the previous Conexant FM336
fax modem, and supports all features of the FM336 family. The FM336Plus also
has numerous feature and performance enhancements. For more information
on the enhancements, refer to the FM336Plus High Performance Fax Modem
Designer’s Guide (document 101360).
Features
(Entire FM336Plus Family)
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Table 1. FM336Plus Modem Family Models and Features
Modem Model
Part
Number
V.34
Fax
Data
Mode
(–D)
V.90 PCM
Mode
(-D90)
FM336Plus
FM336Plus
FM336Plus-D
FM336Plus-D
FM336Plus-D90
FM336Plus-D90
CX06832-11
CX06832-12
CX06832-13
CX06832-14
CX06832-15
CX06832-16
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Clock Input
Oscillator
Crystal
Clock
Clock
Yes
No
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
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Data Sheet
Conexant
Proprietary Information
2-wire half-duplex fax modem modes
with send and receive data rates up to
33600 bps
− V.34 half-duplex, V.17, V.33, V.29,
V.27 ter, and V.21 channel 2
− Short train option in V.17 and
V.27 ter
2-wire duplex data modem modes
− V.21, V.23 (75 bps TX/1200 bps RX
or 1200 bps TX/75 bps RX)
PSTN session starting
− V.8 and V.8bis signaling
HDLC support at all speeds
− Flag generation, 0-bit stuffing, ITU
CRC-16 or CRC-32 calculation and
generation
− Flag detection, 0 bit deletion, ITU
CRC-16 or CRC-32 check sum
error detection
− FSK flag pattern detection during
high-speed receiving
Tone modes and features
− Programmable single or dual tone
generation
− DTMF receiver
− Tone detection with three
programmable tone detectors
Serial synchronous data
Parallel synchronous data
Automatic Rate Adaptation (ARA) in
V.34 half-duplex
Auto-dial and auto-answer control
TTL and CMOS compatible DTE
interface
− ITU-T V.24 (EIA/TIA-232-E)
(data/control)
− Microprocessor bus
(data/configuration/control)
Receive dynamic range:
− 0 dBm to –43 dBm for V.17, V.33,
V.29, V.27 ter and V.21
− –9 dBm to –43 dBm for V.34 halfduplex
Quick Start for V.34 half-duplex
(Conexant Proprietary)
Caller ID Demodulation
Call Waiting Detector
ADPCM Voice Mode
Doc. No. 101361A
December 1, 2000
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
Features
(Entire FM336Plus Family−
−Continued)
Distinguishing Features
(-D90 only)
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•
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Programmable RLSD turn-on and turn-off thresholds
Programmable transmit level: 0 to –15 dBm
Adjustable speaker output to monitor received signal
DMA support for interrupt lines
Two 16-byte FIFO data buffers for burst data transfer with extension
up to 255 bytes
Diagnostic capability
V.21 Channel 1 Flag detect
V.21 Channel 2 Flag detect
+3.3 V operation with +5 V tolerant inputs
+5 V analog signal interface
100-pin PQFP package
Typical power consumption
− Sleep mode: 20 mW
− Normal mode: 250 mW
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2-wire duplex data modem modes
with receive data rates up to 56 kbps
and send data rates as specified in
the V.34 specification
− V.90 PCM mode
Distinguishing Features (-D / -D90)
•
2-wire duplex data modem modes with send and receive rates up to
33600 bps
− V.34 (33.6 kbps), V.32 bis, V.32, V.22 bis, and V.22
− Bell 212A and 103
Serial asynchronous data
Parallel asynchronous data
In-band secondary channel (V.34 and V.32 bis)
Automatic Rate Adaptation (ARA) in V.34 duplex and V.32 bis
Automatic Mode Selection (AMS)
Digital near-end and far-end echo cancellation
Bulk delay for satellite transmission
Receive dynamic range:
− –9 dBm to –43 dBm for V.34, V.32 bis, V.32, V.22 bis, V.22, and V.23
511 pattern generation/detection
V.13 signaling
Diagnostic capability
− V.54 inter-DCE signaling
− V.54 local analog and remote digital loopback
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Copyright © 2000, Conexant Systems, Inc., All Rights Reserved.
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2
Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
GROUP3 FACSIMILE MODEM
(ENTIRE FM336PLUS FAMILY)
TECHNICAL SPECIFICATIONS
The modem satisfies the requirements specified in
ITU-T recommendations V.34 half-duplex, V.17, V.33,
V.29, V.27 ter, V.21, and meets the binary signaling
requirements of V.8 and T.30 with Annex F.
Internal HDLC support eliminates the need for an
external serial input/output (SIO) device in the DTE for
products incorporating error detection and T.30
protocol. The modem can perform HDLC framing per
T.30 at all data speeds. CRC generation/checking
along with zero insertion/deletion enhances
SDLC/HDLC frame operations. Two FSK (V.21 Ch. 1
and V.21 Ch. 2) flag pattern detectors facilitate FSK
detection during high-speed reception. The modem
features a programmable DTMF transmitter/receiver
and three programmable tone detectors.
The FM336Plus modem provides the processing core
for a complete facsimile modem design.
Configurations and Rates
The selectable modem configurations, signaling rates,
and data rates are listed in Table 2.
Automatic Mode Selection (-D / -D90)
When Automatic Mode Selection (AMS) is enabled,
the modem configures itself to the highest compatible
data rate supported by the remote modem. Automode
operation is supported in V.90 (-D90 only), V.34,
V.32 bis, V.32, V.22 bis, V.22, V.21, V.23, Bell 212A,
and Bell 103 modes.
Automatic Rate Adaptation
DUPLEX DATA MODE (-D / -D90)
The duplex data mode supports Internet facsimile
applications. The modem can connect at the highest
data rate up to 33600 bps with auto fall back to
V.32 bis. The FM336Plus-D and FM336Plus-D90
modems satisfy the requirements specified in ITU-T
recommendations V.34, V.32 bis, V.32, V.22 bis, V.22,
V.23, V.21, Bell 212A, and Bell 103.
ITU-T V.90 PCM MODE (-D90)
The ITU-T V.90 PCM mode can receive data at
speeds up to 56 kbps from a digitally connected V.90
central site modem. The FM336Plus-D90 takes
advantage of the PSTN which is primarily digital to the
central office local loop (except for the client modem)
and is ideal for applications such as remote access to
an Internet Service Provider (ISP), online service, or
corporate intranet. The modem can send upstream
data at speeds up to the V.34 rate.
In V.34 duplex, V.34 half-duplex, and V.32 bis modes,
Automatic Rate Adaptation (ARA) can be enabled to
select the optimal highest acceptable data rate based
on the Eye Quality Monitor (EQM). This selection
occurs during startup.
Two ARA modes are available. ARA in ROM is an
adaptive selection made by the modem based upon a
fixed ROM table. ARA in RAM is based on the host
programmable RAM table and can be changed by the
user.
Data Encoding
The data encoding conforms to ITU-T recommendations
V.90 (-D90 only), V.34, V.32 bis, V.32, V.17, V.33,
V.29, V.27 ter, V.22 bis, V.22, V.23, or V.21, and is
compatible with Bell 208, 212A, or 103, depending on
the configuration.
Tone Generation
The modem can generate single or dual voice-band
tones from 0 Hz to 3600 Hz with a resolution of
0.15 Hz and an accuracy of ± 0.01%. Tones over
3000 Hz are attenuated. DTMF tone generation allows
the modem to operate as a programmable DTMF
dialer.
101361A
Conexant
3
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
Supervisory Tone Detection
Answer Tone (-D / -D90)
Three parallel tone detectors (A, B, and C) are
provided for supervisory tone detection. The signal
path to these detectors is separate from the main
received signal path.
When the NV25 bit is a zero, the modem generates
a 2100 Hz answer tone at the beginning of the answer
handshake for 5.0 seconds (V.8) or 3.6 seconds
(V.32 bis, V.32, V.22 bis, V.22, V.23, and V.21). The
answer tone has 180° phase reversals every 0.45
seconds to disable network echo cancellers (V.8,
V.32 bis, and V.32).
Each tone detector consists of two cascaded second
order IIR biquad filters. The coefficients are host
programmable. Each fourth order filter is followed by a
level detector which has host programmable turn-on
and turn-off thresholds allowing hysteresis. A pre-filter
and squarer precede tone detector C. This circuit is
useful for detecting a tone with a frequency equal to
the difference between two tones that may be
simultaneously present on the line. The SQDIS bit may
disable the squarer causing tone detector C to be an
eight-order filter. The tone detectors are disabled in
data mode.
Receive Level
The modem satisfies performance requirements for
received line signal levels from 0 dBm to –43 dBm
measured at the receiver analog (TIP and RING) input
in V.17, V.33, V.29, V.27 ter, and DTMF modes. In
V.90, V.34, V.32 bis, V.32, V.22 bis, V.22, and
V.23 modes, the receive level range is from –9 dBm
(–15 dBm at RIN) to –43 dB. (RIN is 6 dB lower than
TIP and RING.)
The tone detection sample rate is 9600 Hz in V.8 and
V.34 modes and is 7200 Hz in non-V.34 modes. The
default call progress filter coefficients are based on a
7200 Hz sampling rate and apply to non-V.34 modes
only. The maximum detection bandwidth is equal to
one-half the sample rate.
Carrier Recovery
Auto-Dialing and Auto-Answering Control
A data echo canceller with near-end and far-end echo
cancellation is included for 2-wire duplex V.90/V.34/
V.32 bis/V.32 operation. The combined echo span of
near and far cancellers can be up to 40 ms. The
proportion allotted to each end is automatically
determined by the modem. The delay between nearend and far-end echoes can be up to 1.2 seconds.
Features are provided to allow the host to perform
auto-dialing and auto-answering. These functions
include DTMF or pulse dialing, ring detection, and a
comprehensive supervisory tone detection scheme.
The major control parameters are host programmable.
The carrier recovery circuit can track a ±7 Hz
frequency offset in the received carrier.
Echo Canceller (-D / -D90)
Transmitted Data Spectrum
The transmitter spectrum is shaped by raised cosine
filter functions, either the square root of 12.5% (V.34,
V.32 bis, V.32), 20% (V.17, V.33, and V.29), 50%
(V.27 ter, Bell 208), or 75% (V.22 bis, Bell 212A).
Transmit Level
The transmitter output level is selectable from 0 dBm
to –15 dBm in 1 dB steps and is accurate to ±0.5 dB
when used with an external hybrid. The output level
can also be tuned by changing a gain constant in the
modem DSP RAM. The maximum V.34 transmit level
for acceptable receive performance should not exceed
–9 dBm.
4
Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
Table 2. Configurations, Signaling Rates, and Data Rates
Configuration
Modulation
V.90 PCM
PCM
V.34 33600 TCM**
V.34 31200 TCM**
V.34 28800 TCM**
V.34 26400 TCM**
V.34 24000 TCM**
V.34 21600 TCM**
V.34 19200 TCM**
V.34 16800 TCM**
V.34 14400 TCM**
V.34 12000 TCM**
V.34 9600 TCM**
V.34 7200 TCM**
V.34 4800 TCM**
V.34 2400 TCM**
V.32 bis 14400 TCM
V.32 bis 12000 TCM
V.32 bis 9600 TCM
V.32 bis 7200 TCM
V.32 bis 4800
V.32 9600 TCM
V.32 9600
V.32 4800
V.22bis 2400
V.22bis 1200
V.22 1200
V.22 600
V.23 1200/75
V.21
Bell 208 4800
Bell 212A
Bell 103
V.17 14400 TCM/V.33
V.17 12000 TCM/V.33
V.17 9600 TCM
V.17 7200 TCM
V.29 9600
V.29 7200
V.29 4800
V.27 ter 4800
V.27 ter 2400
V.21 Channel 2
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
TCM
QAM
TCM
QAM
QAM
QAM
DPSK
DPSK
DPSK
FSK
FSK
DPSK
DPSK
FSK
TCM
TCM
TCM
TCM
QAM
QAM
QAM
DPSK
DPSK
FSK
Carrier
Frequency (Hz)
±0.01%
Data Rate (bps)
±0.01%
—
56000 R/V.34 rates T
(Note 4)
33600
31200
28800
26400
24000
21600
19200
16800
14400
12000
9600
7200
4800
2400
14400
12000
9600
7200
4800
9600
9600
4800
2400
1200
1200
600
1200/75
Up to 300
4800
1200
Up to 300
14400
12000
9600
7200
9600
7200
4800
4800
2400
300
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
1800
1800
1800
1800
1800
1800
1800
1800
1200/2400
1200/2400
1200/2400
1200/2400
1700/420
1080/1750
1800
1200/2400
1170/2125
1800
1800
1800
1800
1700
1700
1700
1800
1800
1750
Symbol Rate
(Symbols/Sec)
Bits/Symbol
Data
8000
Dynamic
3429 only
3200 min
3000 min
2800 min
2800 min
2400 min
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
2400 only
2400
2400
2400
2400
2400
2400
2400
2400
600
600
600
600
1200
300
1600
600
300
2400
2400
2400
2400
2400
2400
2400
1600
1200
300
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
6
5
4
3
2
4
4
2
4
2
2
1
1
1
3
2
1
6
5
4
3
4
3
2
3
2
1
Bits/Symbol
TCM
Constellation
Points
—
—
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
128
64
32
16
4
32
16
4
16
4
4
4
—
—
8
4
—
128
64
32
16
16
8
4
8
4
—
Notes:
1. Modulation legend:
TCM:
QAM:
PCM:
FSK:
DPSK:
Trellis-Coded Modulation
Quadrature Amplitude Modulation
Pulse Coded Modulation
Frequency Shift Keying
Differential Phase Shift Keying
2. Adaptive; established during handshake:
Symbol Rate (Baud)
2400
2800
3000
3200
3429
V.34 Low Carrier Frequency (Hz)
1600
1680
1800
1829
1959
V.34 High Carrier Frequency (Hz)
1800
1867
2000
1920
1959
3. ** For both duplex and half-duplex modes.
4. Maximum data rate.
101361A
Conexant
5
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
Data Formats
V.54 Inter-DCE Signaling (-D / -D90)
Serial Synchronous Data
•
•
Data rate: 300–56000 bps (-D90) or
300–33600 bps ±0.01%
Selectable clock: Internal, external, or slave
Serial Asynchronous Data (-D / -D90)
•
•
Data rate: 300–56000 bps (-D90) or
300–33600 bps +1%/–2.5% or +2.3%/–2.5%; up to
300 bps (V.21 and Bell 103); 1200/75 bps (V.23)
Data bits per character: 7, 8, 9, 10, or 11
The modem supports V.54 inter-DCE signaling
procedures in synchronous and asynchronous
configurations. Transmission and detection of the
preparatory, acknowledgment, and termination phases
as defined in V.54 are provided. Three control bits
(V54T, V54A, and V54P) in the transmitter allow the
host to send the appropriate bit patterns. Three control
bits (V54TE, V54AE, and V54PE) in the receiver are
used to enable one of three bit pattern detectors. A
status bit (V54DT) indicates when the selected pattern
detector has found the corresponding bit pattern.
Parallel Synchronous Data
V.13 Remote RTS Signaling (-D / -D90)
•
•
The modem supports V.13 remote RTS signaling.
Transmission and detection of signaling bit patterns in
response to a change of state in the RTS bit or the
/RTS input signal are provided. This feature may be
used to clamp/unclamp the local /RLSD and RXD
signals in response to a change in the remote /RTS
signal in order to simulate controlled carrier operation
in a constant carrier environment. The modem
automatically clamps and unclamps /RLSD.
•
Normal sync: 8-bit data for transmit and receive
Data rate: 300–56000 bps (-D90) or
300–33600 bps ±0.01%
SDLC/HDLC support:
− Transmitter: Flag generation, 0-bit stuffing,
CRC-16 or CRC-32 generation
− Receiver: Flag detection, 0-bit deletion, CRC-16
or CRC-32 checking
Parallel Asynchronous Data (-D / -D90)
•
•
•
In-Band Secondary Channel (-D / -D90)
Data rate: 300–56000 bps (-D90) or
300–33600 bps +1%/–2.5% or +2.3%/–2.5%;
1200, 300, or 75 bps (FSK)
Data bits per character: 5, 6, 7, or 8
Parity generation/checking: Odd, Even,
or 9th data bit
A duplex in-band secondary channel is provided in
V.34 (all speeds) and V.32 bis/V.32 (7200 bps and
above) modes. The secondary channel operates in
parallel data mode with independent transmit and
receive interrupts and data buffers. The main channel
may operate in parallel or serial mode.
Async/Sync and Sync/Async Conversion
(-D / -D90)
In V.34 modes, the secondary channel rate is 200 bps.
An asynchronous-to-synchronous converter is provided
in the transmitter and a synchronous-to-asynchronous
converter is provided in the receiver. The converters
operate in both serial and parallel modes. The
asynchronous character format is 1 start bit, 5 to 8
data bits, an optional parity bit, and 1 or 2 stop bits.
Valid character size, including all bits, is 7, 8, 9, 10, or
11 bits per character. Two ranges of signaling rates
are provided:
•
•
Basic range: +1% to –2.5%
Extended overspeed range: +2.3% to –2.5%
When the transmit converter is operating at the basic
signaling rate, no more than one stop bit will be deleted
per eight consecutive characters. When operating at
the extended rate, no more than one stop bit will be
deleted per four consecutive characters. Break
handling is performed as described in V.14.
Asynchronous characters are accepted on the TXD
serial input and are issued on the RXD serial output.
101361A
In V.32 bis/V.32 modes, the secondary channel rate
is 150 bps. This rate is also host programmable in
V.32 bis/V.32 modes.
Transmit and Receive FIFO Data Buffers
Two 16-byte first-in first-out (FIFO) data buffers allow
the DTE/host to output up to 16 bytes of transmit data
to the transmitter FIFO (TXFIFO) and input up to
16 bytes of accumulated received data from the
receiver FIFO (RXFIFO). The TXFIFO and RXFIFO
can be extended up to 255 bytes. The size of the FIFO
extension is 255 bytes overall and can be divided
between the two FIFOs in any proportion.
The RXFIFO is always enabled. The host can enable
the TXFIFO. Status bits indicate when the TXFIFO is
not full, the TXFIFO is half-full (eight or more bytes
loaded), the RXFIFO is empty, and the RXFIFO is halffull. An interrupt mask register allows an interrupt
request to be generated whenever the status bits
change state.
Conexant
6
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
DMA Support for Interrupt Request Lines
DMA support is available in synchronous data modes.
When DMA support is enabled, the modem /RI and
/DSR lines are assigned to Transmitter Request
(TXRQ) and Receiver Request (RXRQ) hardware
output interrupt request lines, respectively. The TXRQ
and RXRQ signals follow the assertion of the Transmit
Data Buffer Empty (TDBE) and Receive Data Buffer
Full (RDBF) interrupt bits, thereby allowing the
DTE/host to respond immediately to the interrupt
request without masking out status bits to determine
the interrupt source.
Quick Start for V.34 Half-Duplex
(Conexant Proprietary)
V.34 Fax Quick Startup eliminates the V.8 phase 1
segment and uses a shortened training sequence
during phase 3, which can save up to 50% of the initial
Phase1 to Phase 4 start up time for normal V.34 halfduplex connection.
Relay Control. Direct control of the off-hook and
talk/data relays is provided. Internal relay drivers allow
direct connection to the off-hook and talk/data relays.
The talk/data relay output can optionally be used for
pulse dial.
Speaker Interface. A SPKR output is provided with
on/off and volume control logic incorporated in the
modem, requiring only an external amplifier to drive a
speaker.
Hardware Interface Signals
Figure 1 illustrates the functional interface signals. In
this diagram, an active low signal is indicated by a
forward slash “/” (e.g., /RESET). A clock intended to
activate logic on its rising edge (low-to-high transition)
is called active high (e.g., TDCLK), while a clock
intended to activate logic on its falling edge (high-tolow transition) is called active low (e.g., /RDCLK).
Figure 2 illustrates the modem pin assignments.
Table 3 provides the signal descriptions.
ADPCM Voice Mode
The Adaptive Differential Pulse Code Modulation
(ADPCM) voice coder and decoder (codec)
compresses and decompresses voice signals for
efficient digital storage of voice messages. The codec
operates at 28.8 kbps, 21.6 kbps, or 14.4 kbps
(4-bit, 3-bit, or 2-bit quantization, respectively) with
an 8.0 kHz sampling rate.
Caller ID Demodulation
Caller ID information can be demodulated in the
V.23 1200 receive configuration and presented to the
DTE/host in serial (RXD) or parallel (RBUFFER) form.
Call Waiting Detector
A tone detector is provided to perform call waiting
detection and is available in V.90, V.34, V.32bis, V.32,
V.17, V.29, and V.27ter modes. By default, call waiting
tone levels down to approximately –28 dBm can be
detected. The detector can tolerate near-end echo
levels up to 10 dB above the call waiting tone level.
Power and Maximum Ratings
Table 4 lists the current and power requirements.
Table 5 lists the absolute maximum ratings.
Clock Sources
The modem is offered in two configurations depending
upon the selected clock source. One configuration
utilizes a crystal source and the other uses an
oscillator source.
For the crystal configuration, the crystal is connected to
XTLI (pin 85) and XTLO (pin 86). For the oscillator
source, the oscillator is connected to CLKIN (pin 85)
and XTLO (pin 86) is not connected.
Package Dimensions
Figure 3 shows the package dimensions.
Additional Information
Additional design information is described in the
FM336Plus V.34/Group3 High Performance Fax
Modem Designer’s Guide.
Telephone Line Interface
Line Transformer Interface. V.90/V.34 places high
requirements upon the Data Access Arrangement
(DAA) connection to the telephone line. Due to the
wider bandwidth requirement of V.90 and V.34, the
DAA must maintain linearity from 150 to 3950 Hz for
V.34, and from 10 to 4000 Hz for V.90.
101361A
Conexant
7
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
/RTS
XTLI
/CTS
XTL0
TXD
OR
TDCLK
CLKIN
Oscillator
XTCLK
V.24
Interface
Crystal
/RLSD
RXD
RIN
/RDCLK
TXA1
/DTR
TXA2
/DSR**
OH
/RI*
telephone
line
TIP
Line
Interface
RING
RINGD
/TALK
FM336Plus
Modem Family
/RD
Host
Processor
/WR
EYEXY
/CS
EYESYNC
D7:0
EYECLK
Optional
Eye Pattern
Generator
RS4:0
IRQ
/RESET
TXRQ*
SPKR
RXRQ**
Speaker
Amplifier
+5V
+3.3V
AGND
Power Supply
DGND
* Selectable; TXRQ output replaces /RI output.
** Selectable; RXRQ output replaces /DSR output.
Figure 1. Functional Interface Signals
8
Conexant
101361A
EYESYNC
EYECLK
MAVSS
MAVDD
SPKR
TXA2
TXA1
GPO0
RESERVED
RESERVED
XTALO
XTALI/CLKIN
VDD1
D1
D0
D4
D3
D2
D5
VDD1
RS0
D7
D6
PLL_VDD
RS1
VC
RIN
MAVSS
VREF
VSS
IRQ
/RTS
RINGD
/RI
/DSR
EYEXY
XCLK
YCLK
VGG
IA_SLEEP
VDD1
/DTR
RXD
RESERVED
VSS
XTCLK
VDD1
VCORE
SR1IO
NC
RESERVED
RESERVED
VDD1
SLEEP
NC
NC
VSS
VSUB
RESERVED
OH
VDD
SR4IN
CLK_OUT
M_RXOUT
M-STROBE
RESERVED
/RESET
SR4OUT
NC
M_TXSIN
M_SCK
RESERVED
RESERVED
VSS
NC
NC
M_CNTRL_SIN
M_CLKIN
/CTS
VDD1
RESERVED
RESERVED
TDCLK
TXD
RESERVED
/TALK
VDD
/RDCLK
/RLSD
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
/POR
RESERVED
/WR
/RD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
RESERVED
RS2
RS3
RS4
/CS
FM336Plus
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
PLL_GND
VSS
V.34/Group 3 High Performance Fax Modem Family
Figure 2. FM336Plus Family Modem Pin Assignments—100-Pin PQFP
101361A
Conexant
9
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
Table 3. Signal Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Signal Label
RESERVED
RS2
RS3
RS4
/CS
/WR
/RD
/RDCLK
/RLSD
TDCLK
TXD
/CTS
VDD1
RESERVED
RESERVED
VSS
NC
/RESET
SR4OUT
NC
SR4IN
CLK_OUT
EYESYNC
EYECLK
MAVSS
MAVDD
SPKR
TXA2
TXA1
VREF
VC
RIN
MAVSS
/POR
RESERVED
RESERVED
/TALK
VDD
RESERVED
RESERVED
NC
M_CNTRL_SIN
M_CLKIN
M_TXSIN
M_SCK
M_RXOUT
M_STROBE
RESERVED
OH
VDD
I/O Type
—
IA
IA
IA
IA
IA
IA
OA
OA
OA
IA
OA
PWR
—
—
GND
—
OA
OA
—
IA
OA
OA
OA
GND
PWR
O(DF)
O(DD)
O(DD)
MI
MI
I(DA)
AGND
IA
—
—
O(DD)
PWR
—
—
—
IA
IA
IA
IA
IA
IA
—
O(DD)
PWR
Interface
Pin
—
HOST Interface
HOST Interface
HOST Interface
HOST Interface
HOST Interface
HOST Interface
DTE Serial Interface
DTE Serial Interface
DTE Serial Interface
DTE Serial Interface
DTE Serial Interface
—
—
—
—
NC
Modem Interconnect
Modem Interconnect
NC
Modem Interconnect
Modem Interconnect
Diagnostic Signal
Diagnostic Signal
—
—
Telephone Line Interface
Telephone Line Interface
Telephone Line Interface
Modem Interconnect
Modem Interconnect
Telephone Line Interface
—
Modem Interconnect
—
—
Telephone Line Interface
—
—
—
NC
Modem Interconnect
Modem Interconnect
Modem Interconnect
Modem Interconnect
Modem Interconnect
Modem Interconnect
—
Telephone Line Interface
—
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Signal Label
RESERVED
VSUB
VSS
NC
NC
SLEEP
VDD1
RESERVED
RESERVED
NC
SR1IO
VCORE
VDD1
XTCLK
VSS
RESERVED
RXD
/DTR
VDD1
IA_SLEEP
VGG
YCLK
XCLK
EYEXY
/DSR
/RI
RINGD
/RTS
IRQ
VSS
GPO0
RESERVED
RESERVED
VDD1
XTALI/CLKIN
XTALO
D0
D1
D2
D3
D4
VDD1
D5
D6
D7
RS0
RS1
PLL_VDD
VSS
PLL_GND
I/O Type
—
GND
GND
—
—
MI
PWR
—
—
—
MI
PWR
PWR
IA
GND
—
OA
IA
PWR
MI
PWR
OA
OA
OA
OA
OA
IA
IA
OA
GND
MI
—
—
PWR
I
O
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
PWR
IA/OB
IA/OB
IA/OB
IA/OB
IA/OB
PWR
GND
GND
Interface
—
—
—
NC
NC
Modem Interconnect
—
—
—
NC
Modem Interconnect
—
—
DTE Serial Interface
—
—
DTE Serial Interface
DTE Serial Interface
—
Modem Interconnect
—
Overhead Signal
Overhead Signal
Diagnostic Signal
DTE Serial Interface
Telephone Line Interface
Telephone Line Interface
DTE Serial Interface
HOST Interface
—
Modem Interconnect
—
—
—
Overhead Signal
Overhead Signal
HOST Interface
HOST Interface
HOST Interface
HOST Interface
HOST Interface
—
HOST Interface
HOST Interface
HOST Interface
HOST Interface
HOST Interface
—
—
—
Notes:
1.
I/O types:
MI = Modem interconnect
IA, IB = Digital input
OA, OB = Digital output
I(DA) = Analog input
O(DD), O(DF) = Analog output
2.
NC = No external connection required
RESERVED = No external connection allowed
3.
Interface Legend:
HOST = Modem Control Unit (Host)
DTE = Data Terminal Equipment
10
Conexant
101361A
V.34/Group 3 High Performance Fax Modem Family
FM336Plus
Table 4. Current and Power Requirements
Current (ID)
Power (PD)
Typical Current
(mA) @ 25° C
Maximum
Current
(mA) @ 0° C
Typical Power
(mW) @ 25° C
Maximum Power
(mW) @ 0° C
Normal mode
76
88
250
320
Sleep mode
6
8
20
30
Mode
Notes
Note:
Test conditions: VDD = +3.3 VDC for typical values; VDD = +3.63 VDC for maximum values.
Table 5. Absolute Maximum Ratings
Symbol
Limits
Units
Supply Voltage
Parameter
VDD1
–0.5 to +3.6
V
Digital Input Voltage
VIND
–0.5 to (+5VD +0.5)
V
Operating Temperature Range
TA
–0 to +70
°C
Storage Temperature Range
TSTG
–55 to +125
°C
Analog Input Voltage
VINA
–0.3 to (+5VA + 0.3)
V
Voltage Applied to Outputs in High Impedance (Off) State
VHZ
–0.5 to (+5VD + 0.5)
V
DC Input Clamp Current
IIK
±20
mA
DC Output Clamp Current
IOK
±20
mA
Static Discharge Voltage (25 °C)
VESD
±2500
V
Latch-up Current (25 °C)
ITRIG
±200
mA
101361A
Conexant
11
FM336Plus
V.34/Group 3 High Performance Fax Modem Family
See detail A
D
CHAM (4X)
D1
D2
E1
E E1 E2
PIN 1
REF
e
b
TOP VIEW
SIDE VIEW
Dim.
A
A1
A2
D
D1
D2
E
E1
E2
A
L
A2
L1
e
c
DETAIL A
L
0.0945 MAX
0.35
0.05
2.0 REF
0.0020
23.45
22.95
20.0 REF
0.9035
0.7421 REF
0.6673
0.6870
0.5512 REF
12.35 REF
1.03
0.73
1.6 REF
0.9232
0.7874 REF
18.85 REF
17.45
16.95
14.0 REF
0.0138
0.0787 REF
0.4862 REF
0.0287
0.0406
0.0630 REF
0.65 BSC
0.0256 BSC
b
0.25
0.45
0.0098
0.0177
c
0.19
0.13
0.10 MAX
0.0051
0.0075
Coplanarity
A1
Inches
Max.
Min.
Millimeters
Max.
Min.
2.4 MAX
0.004 MAX
Ref: 100-PIN PQFP (GP00-D234)
L1
* Metric values (millimeters) should be used for
PCB layout. English values (inches) are
converted from metric values and may include
round-off errors.
Figure 3. Package Dimensions—100-Pin PQFP
12
Conexant
PD-PQFP-100 (040695)
101361A
INSIDE COVER BACK PAGE
101361A
Conexant
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Further Information
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