DATASHEET

DATASHEET
Intelligent Digital Amplifier PWM Controller and Audio
Processor
D2-41051, D2-41151
Features
The D2-41051 and D2-41151 (D2-41x51-QR) devices are
complete System-on-Chip (SoC) Audio Processor and Class-D
Amplifier Controllers, offering a powerful yet very cost effective
audio solution for high volume consumer products, including
Digital TV systems, PC Multimedia Speakers, and Portable
Device Docking Stations. This 4th generation Digital Audio
Engine (DAE-4)™ device combines extensive integrated DSP
processing and configurable audio processing algorithms, for
complete audio system control. The D2-41x51-QR devices are
built upon the proven technology present in D2Audio's D2-814xx,
D2-914xx, and D2-926xx families of Class-D Controller ICs, while
providing an optimized feature set for high volume and
cost-critical products.
• All Digital Class-D Amplifier Controller with Integrated Digital
Signal Processing (DSP)
The D2Audio D2-41x51-QR devices offer the optimum balance of
functionality and lowest system material cost, especially in an
SoC system architectures with I2S audio output. All audio
processing and amplifier control is handled by the D2-41x51-QR,
and its ease of integration to the existing system processor
handles all system control functions.
• Supports 2.0, 2.1 or Bi-Amp Amplifier Outputs with Discrete or
Integrated Power Stages
• Fully Programmable Audio Signal Path Parameters
• Up to 5 Channels of Digital Signal Processing (DSP)
• Includes Equalizers, Filters, Mixers and Other Common Audio
Processing Blocks
• Audio Enhancement Algorithms Included
• I2S and S/PDIF™ Digital Audio Stereo Inputs
• I2C Host Control Port
• Asynchronous Sample Rate Converters, Sample Rates from
32kHz up to 192kHz
Applications
• PC/Multimedia Speakers
• Digital TV Audio Systems
Related Literature
• Portable Device Docking Stations
• D2-41x51-QR Technical Reference
• Powered Speaker Systems
• DAE-4 Evaluation Board Guides
Typical Application
PWM0
I2S
SoC
SYSTEM
CONTROLLER(S)
I2C
(OPTIONAL)
OPTICAL/
COAX IN
S/PDIF
BUFFER
(OPTIONAL)
OPTICAL/
COAX OUT
S/PDIF
BUFFER
DIGITAL
AUDIO
INTERFACE
I2C
CONTROL
S/PDIF
DIGITAL
I/O
INTERFACE
PWM1 DRIVER
2 CHANNEL
SAMPLE
RATE
CONVERTER
24 BIT
DIGITAL
SIGNAL
PROCESSOR
D2AUDIO
AUDIO
CANVAS™
PROCESSING
D2AUDIO®
SOUNDSUITE™
3RD PARTY
ENHANCEMENTS
(SRS WOW/HD®)
D2-41x51-QR
DAE-4™ PWM CONTROLLER AND AUDIO PROCESSOR
May 5, 2016
FN6783.1
1
OUTPUT
FILTER
LEFT
5 CHANNEL
PWM
ENGINE
PWM2
PWM3 DRIVER
PWM
OUTPUT
DRIVE
®
FETs
FETs
RIGHT
PWM4
PWM5 DRIVER
OUTPUT
FILTER
FETs
OUTPUT
FILTER
SUBWOOFER
PWM6 OUTPUT
FILTER
PWM7 OUTPUT
FILTER
STEREO
LINE OUT
OR
HEADPHONE OUT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2009, 2016. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
D2-41051, D2-41151
Ordering Information
PART
NUMBER
(Notes 3, 4)
AUDIO PROCESSING FEATURE
SET SUPPORT
(Note 2)
PART
MARKING
TEMP RANGE
(°C)
TAPE AND REEL
(UNITS)
PACKAGE
(RoHS Compliant)
PKG.
DWG. #
D2-41051-QR
D2Audio™ SoundSuite™
D2-41051-QR
-10 to +85
-
48 Ld QFN
L48.7x7
D2-41051-QR-TK
(Note 1)
D2Audio™ SoundSuite™
D2-41051-QR
-10 to +85
1k
48 Ld QFN
L48.7x7
D2-41151-QR
D2Audio™ SoundSuite™
DTS®(SRS) WOW/HD™
D2-41151-QR
-10 to +85
-
48 Ld QFN
L48.7x7
D2-41151-QR-TK
(Note 1)
D2Audio™ SoundSuite™
DTS®(SRS) WOW/HD™
D2-41151-QR
-10 to +85
1k
48 Ld QFN
L48.7x7
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. The D2-41x51 family supports audio processing algorithms for the D2Audio SoundSuite™, and DTS®(SRS) WOW/HD® audio enhancement features.
Algorithm support of these enhancements is device-dependent. Refer to specific part number for desired feature support.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pbfree products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), please see device information page for D2-41051 and D2-41151. For more information on MSL please see
techbrief TB363.
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Table of Contents
Typical Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Serial Audio Interface Port Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Two-Wire (I2C) Interface Port Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SPI™ Master Mode Interface Port Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SPI™ Slave Mode Interface Port Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
D2-41051, D2-41151 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programmable Audio Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Enhancement Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
12
12
12
12
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Audio Digital Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S/PDIF Digital Audio I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sample Rate Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Processing And Signal Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Enhancement Feature Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWM Audio Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Control Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I2C 2-Wire Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overcurrent Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Synchronization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock and PLL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset and Device Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boot Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Mode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Modes Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
13
13
13
13
13
15
15
15
15
15
15
15
17
17
17
17
17
17
17
18
18
18
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Disclaimer for DTS®(SRS) Technology License Required Notice: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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D2-41051, D2-41151
Absolute Maximum Ratings
Thermal Information
Specifications
(Note 7)
Supply Voltage
RVDD, PWMVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 4.0V
CVDD, PLLVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.4V
Input Voltage
Any Input but XTALI . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to RVDD + 0.3V
XTALI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to PLLVDD + 0.3V
Input Current, any Pin but Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
48 Ld QFN (Notes 5, 6) . . . . . . . . . . . . . . . .
27
2
Temperature Range (Operating). . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Maximum Storage Temperature. . . . . . . . . . . . . . . . . . . . -55°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
5. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
6. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
7. Absolute Maximum parameters are not tested in production.
Recommended Operating Conditions
TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All grounds
at 0.0V. All voltages referenced to ground. PLL at 294.912MHz, OSC at 24.576MHz, core running at 147.456MHz with typical audio data traffic.
SYMBOL
CVDD
RVDD and PWMVDD
PLLVDD
PARAMETER
MIN
TYP
MAX
UNIT
1.7
1.8
1.9
V
Active Current
-
300
-
mA
Power-Down Current (Note 8)
-
6
-
mA
Digital I/O and PWM Pad Ring Supply Pins
3.0
3.3
3.6
V
Active Current
-
10
-
mA
Power-Down Current (Note 8)
-
0.01
-
mA
1.7
1.8
1.9
V
Active Current
-
10
-
mA
Power-Down Current (Note 8)
-
5
-
mA
Core Supply Pins
Analog Supply Pins (PLL)
NOTE:
8. Power Down is with device in reset and clocks stopped
Electrical Specifications TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All grounds at 0.0V. All voltages
referenced to ground. PLL at 294.912MHz, OSC at 24.576MHz, core running at 147.456MHz with typical audio data traffic.
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
VIH
Digital Input High Logic Level (Note 9)
2
-
-
V
VIL
Digital Input Low Logic Level (Note 9)
-
-
0.8
V
VOH
High Level Output Drive Voltage (Note 10) (IOUT = -Pad Drive)
RVDD - 0.4
-
-
V
VOL
Low Level Output Drive Voltage (Note 10) (IOUT = +Pad Drive)
-
-
0.4
V
VIHX
High Level Input Drive Voltage XTALI Pin
0.7
-
PLLVDD
V
VILX
Low Level Input Drive Voltage XTALI Pin
-
-
0.3
V
IIN
Input Leakage Current (Note 11)
-
-
±10
µA
CIN
Input Capacitance
-
9
-
pF
COUT
Output Capacitance
-
9
-
pF
Trst
nRESET Pulse Width
-
10
-
ns
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Electrical Specifications TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All grounds at 0.0V. All voltages
referenced to ground. PLL at 294.912MHz, OSC at 24.576MHz, core running at 147.456MHz with typical audio data traffic. (Continued)
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CRYSTAL OSCILLATOR
Xo
Crystal Frequency (Fundamental Mode Crystal)
20
24.576
25
MHz
Dt
Duty Cycle
40
-
60
%
-
5
20
ms
240
294.912
300
MHz
-
3
-
ms
0.95
1.10
1.30
V
-
5
-
µs
1.4
1.5
1.7
V
Pulse Width Rejection
-
100
-
ns
Minimum Output Pulse Width
-
20
-
ns
2.4
2.7
2.9
V
Pulse Width Rejection
-
100
-
ns
Minimum Output Pulse Width
-
20
-
ns
Tstart
Start-Up Time (Start-Up Time is Oscillator enabled (with Valid Supply) to Stable Oscillation)
PLL
Fvco
VCO Frequency
PLL Lock Time from any Input Change
1.8V POWER ON RESET
Ven
Reset Enabled Voltage Level
Tdis
POR Minimum Output Pulse Width
1.8V BROWNOUT DETECTION
Detect Level
Tbod1
To1
3.3V (CVDD) BROWNOUT DETECTION
Detect Level
Tbod3
To3
NOTES:
9. All input pins except XTALI
10. All digital output pins. Drive strength for each digital pin is in the “D2-41051, D2-41151 Pin Descriptions” on page 10.
11. Input leakage applies to all pins except XTALO
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Serial Audio Interface Port Timing TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%, XTALI = 24.576
MHz, NESSI clock polarity = 1. All grounds at 0.0V. All voltages referenced to ground.
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNIT
-
-
12.5
MHz
tcSCLK
SCLK Frequency - (SCLK)
twSCLK
SCLK Pulse Width (HIGH and LOW) - (Sclk)
40
-
-
ns
tsLRCLK
LRCKR Set-Up to SCLK Rising - (LRCK)
20
-
-
ns
thLRCLK
LRCKR Hold from SCLK Rising - (LRCK)
20
-
-
ns
tsSDI
SDIN Set-Up to SCLK Rising - (SDIN)
20
-
-
ns
thSDI
SDIN Hold from SCLK Rising - (SDIN)
20
-
-
ns
tcSCLK
twSCLK
SCLK
thLRCLK
twSCLK
LRCK
tsLRCLK
tsSDI
SDIN
thSDI
FIGURE 1. SERIAL AUDIO INTERFACE PORT TIMING
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D2-41051, D2-41151
Two-Wire (I2C) Interface Port Timing
TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All grounds at
0.0V. All voltages referenced to ground.
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNIT
-
-
100
kHz
fSCL
SCL Frequency
tbuf
Bus Free Time Between Transmissions
4.7
-
-
µs
twlowSCLx
SCL Clock Low
4.7
-
-
µs
twhighSCLx
SCL Clock High
4.0
-
-
µs
tsSTA
Set-Up Time for a (Repeated) Start
4.7
-
-
µs
thSTA
Start Condition Hold Time
4.0
-
-
µs
-
1
-
sys clk
250
-
-
ns
thSDAx
SDA Hold from SCL Falling (See Note 12)
tsSDAx
SDA Set-Up Time to SCL Rising
tdSDAx
SDA Output Delay Time from SCL Falling
-
-
3.5
µs
tr
Rise Time of Both SDA and SCL (See Note 13)
-
-
1
µs
tf
Fall Time of Both SDA and SCL (See Note 13)
-
-
300
ns
4.7
-
-
µs
tsSTO
Set-Up Time for a Stop Condition
NOTES:
12. Data is clocked in as valid on next XTALI rising edge after SCL goes low.
13. Limits established by characterization and not production tested.
twhighSCLx
tr
twlowSCLx
tf
SCLx
tsSTA
thSDAx
tsSDAx
tsSTO
tbuf
SDAx
(INPUT)
thSTAx
SDAx
(OUTPUT)
tdSDAx
FIGURE 2. I2C INTERFACE TIMING
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D2-41051, D2-41151
SPI™ Master Mode Interface Port Timing
TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All
grounds at 0.0V. All voltages referenced to ground.
SYMBOL
DESCRIPTION
MIN
MAX
UNIT
tV
MOSI Valid from Clock Edge
-
8
ns
tS
MISO Set-Up to Clock Edge
10
-
ns
tH
MISO Hold from Clock Edge
1 system clock + 2ns
tWI
nSS Minimum Width
3 system clocks + 2ns
SPI™ Slave Mode Interface Port Timing
TA = +25°C, CVDD = PLLVDD = 1.8V ±5%, RVDD = PWMVDD = 3.3V ±10%. All grounds
at 0.0V. All voltages referenced to ground.
SYMBOL
DESCRIPTION
MIN
MAX
tV
MISO Valid from Clock Edge
tS
MOSI Set-Up to Clock Edge
tH
MOSI Hold from Clock Edge
1 system clock + 2ns
tWI
nSS Minimum Width
3 system clocks + 2ns
UNIT
3 system clocks + 2ns
10
-
ns
SCK(CPHA = 1, CPOL = 0)
SCK(CPHA = 0, CPOL = 0)
tV
tV
MOSI
tS
tH
MISO(CPHA = 0)
tWI
nSS
FIGURE 3. SPI TIMING
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D2-41051, D2-41151
Pin Configuration
SCL
SDA
TEMPCOM/TIO0
nRESET
nRSTOUT
CVDD
CGND
VOL0/nSS
PLLAVDD
XTALO
XTALI
PLLAGND
48
47
46
45
44
43
42
41
40
39
38
37
D2-41051, D2-41151
(48 LD QFN)
TOP VIEW
SCLK
1
36
PWMVDD
SDIN
2
35
PWM0
LRCK
3
34
PWM1
MCLK
4
33
PWM2
CVDD
5
32
PWM3
CGND
6
31
PWMGND
RGND
7
30
PWMVDD
RVDD
8
29
PWM4
TEMPREF/SCK
9
28
PWM5
nMUTE/TIO1
10
27
PWM6
VOL1/MISO
11
26
PWM7
TEMP1/MOSI
12
25
PWMGND
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FN6783.1
May 5, 2016
D2-41051, D2-41151
D2-41051, D2-41151 Pin Descriptions
PIN
PIN NAME
(Notes 14, 16)
TYPE
VOLTAGE
LEVEL
(V)
DRIVE
STRENGTH
(mA)
(Note 15)
DESCRIPTION
1
SCLK
I
3.3
-
I2S Serial Audio Bit Clock (SCLK) Input. Input has hysteresis.
2
SDIN
I
3.3
-
I2S Serial Audio Data (SDIN) Input. Input has hysteresis.
3
LRCK
I
3.3
-
I2S Serial Audio Left/Right (LRCK) Input. Input has hysteresis.
4
MCLK
O
3.3
16
5
CVDD
P
3.3
-
Core power, +1.8VDC. Used in the chip internal DSP, logic and interfaces.
6
CGND
P
3.3
-
Core ground
7
RGND
P
3.3
-
Digital pad ring ground. Internally connected to PWMGND.
8
RVDD
P
3.3
-
Digital pad ring power, 3.3V. This 3.3V supply is used for all the digital I/O pad
drivers and receivers, except for the analog pads. There are 2 of these pins and
both are required to be connected. Internally connected to PWMVDD.
9
TEMPREF/
SCK
I/O
3.3
4
Reference pin for temperature monitor and SPI clock. At deassertion of device
reset, pin operates as SPI clock. Upon internal D2-41x51-QR firmware execution,
pin becomes temperature monitor reference.
10
nMUTE/
TIO1
O
3.3
16
Mute signal output. Low active: mute condition drives pin low. Output is a 16mA
driver. Initializes as input on reset, then becomes output upon internal firmware
execution.
11
VOL1/
MISO
I/O
3.3
4
Volume control pulse input and SPI master- input/slave-output data signal. At
deassertion of device reset, pin operates as SPI master input or slave output. Then
upon internal D2-41x51-QR firmware execution, pin becomes input for monitoring
up/down phase pulses from volume control. (1 of 2 volume input pins.)
12
TEMP1/
MOSI
I/O
3.3
4
Temperature monitor pin and SPI master-output/slave-input data signal. At
deassertion of device reset, pin operates as SPI master output or slave input. Then
upon internal D2-41x51-QR firmware execution, pin becomes input for monitoring
temperature.
13
SPDIFRX
I
3.3
-
S/PDIF digital audio data input
14
SPDIFTX
O
3.3
8
S/PDIF digital audio data output This pin is the S/PDIF audio output and drives an
8mA, 3.3V stereo output up to 192kHz. Pin floats on reset.
15
TEST
I
3.3
-
Hardware test mode control. For factory use only. Must be tied low.
16
IRQA
I
3.3
-
Interrupt request port A. One of 2 IRQ pins, tied to logic (3.3V) high or to ground.
High/low logic status establishes boot mode selection upon deassertion of reset
(nRESET) cycle.
17
IRQB
I
3.3
-
Interrupt request port B. One of 2 IRQ pins, tied to logic (3.3V) high or to ground.
High/low logic status establishes boot mode selection upon deassertion of reset
(nRESET) cycle.
18
RGND
P
3.3
-
Digital pad ring ground. Internally connected to PWMGND.
19
RVDD
P
3.3
-
Digital pad ring power, 3.3V. This 3.3V supply is used for all the digital I/O pad
drivers and receivers, except for the analog pads. There are 2 of these pins and
both are required to be connected. Internally connected to PWMVDD.
20
nERROR/
CFG0
I/O
3.3
4
Output configuration selection input, and nERROR output. Upon device reset, pin
operates as input, using application-installed pull-up or pull-down connection to
pin to specify one of 4 amplifier configurations. Upon internal D2-41x51-QR
firmware execution, pin becomes output, providing active-low output drive when
amplifier protection monitoring detects an error condition.
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I2S Serial Audio Master Clock output for external ADC/DAC components, drives
low on reset. Output is an 8mA driver.
FN6783.1
May 5, 2016
D2-41051, D2-41151
D2-41051, D2-41151 Pin Descriptions
PIN
PIN NAME
(Notes 14, 16)
TYPE
VOLTAGE
LEVEL
(V)
DRIVE
STRENGTH
(mA)
(Note 15)
(Continued)
DESCRIPTION
21
PSSYNC/
CFG1
I/O
3.3
4
Output configuration selection input, and power supply sync output. Upon device
reset, pin operates as input, using application-installed pull-up or pull-down
connection to pin to specify one of 4 amplifier configurations. Upon internal
D2-41x51-QR firmware execution, pin becomes output, providing synchronizing
signal to on-board power supply circuits.
22
PROTECT0
I/O
3.3
4
PWM protection input. Input has hysteresis. Protection monitoring functionality of
pin is controlled by internal D2-41x51-QR firmware, and dependent on which of the
4 amplifier configurations is enabled.
23
PROTECT1
I/O
3.3
4
PWM protection input. Input has hysteresis. Protection monitoring functionality of
pin is controlled by internal D2-41x51-QR firmware, and dependent on which of the
4 amplifier configurations is enabled.
24
PROTECT2
I/O
3.3
4
PWM protection input. Input has hysteresis. Protection monitoring functionality of
pin is controlled by internal D2-41x51-QR firmware, and dependent on which of the
4 amplifier configurations is enabled.
25
PWMGND
P
3.3
-
PWM output pin ground. Internally connected to RGND.
26
PWM7
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
27
PWM6
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
28
PWM5
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
29
PWM4
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
30
PWMVDD
P
3.3
-
PWM output pin power. This 3.3V supply is used for the PWM pad drivers. Internally
connected to RVDD.
31
PWMGND
P
3.3
-
PWM output pin ground. Internally connected to RGND.
32
PWM3
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
33
PWM2
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
34
PWM1
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
35
PWM0
I/O
3.3
8 or 16
PWM output. Output is 8mA or 16mA, depending on output mode configuration
setting. Pin floats on reset.
36
PWMVDD
P
3.3
-
PWM output pin power. This 3.3V supply is used for the PWM pad drivers. Internally
connected to RVDD.
37
PLLGND
P
1.8
-
PLL Analog ground
38
XTALI
P
1.8
-
Crystal oscillator analog input port.
39
XTALO
P
1.8
-
Crystal oscillator analog output port. This output drives the crystal and XTALO does
not have a drive strength specification.
40
PLLVDD
P
1.8
-
PLL Analog power, 1.8V
41
VOL0/
nSS
I/O
3.3
4
Volume control pulse input and SPI slave select. At deassertion of device reset, pin
operates as SPI slave select input. Then upon internal D2-41x51-QR firmware
execution, pin becomes input for monitoring up/down phase pulses from volume
control. (1 of 2 volume input pins.)
42
CGND
P
3.3
-
Core ground
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D2-41051, D2-41151
D2-41051, D2-41151 Pin Descriptions
DRIVE
STRENGTH
(mA)
(Note 15)
(Continued)
PIN
PIN NAME
(Notes 14, 16)
TYPE
VOLTAGE
LEVEL
(V)
43
CVDD
P
3.3
-
44
nRSTOUT
O
3.3
16 - OD
Active low output. Pin drives low from 3.3V brownout detector or 1.8V brownout
detector going active. This output should be used to initiate a system reset to the
nRESET pin upon brownout event detection.
45
nRESET
I
3.3
-
Active low reset input with hysteresis. Low level activates system level reset,
initializing all internal logic and program operations. System latches boot mode
selection on the IRQ input pins on the rising edge.
46
TEMPCOM/
TIO0
I/O
3.3
16
47
SDA
I/O
3.3
8 - OD
Two-Wire Serial data port, open drain driver with 8mA drive strength. Bidirectional
signal used by both the master and slave controllers for data transport. Pin floats
on reset.
48
SCL
I/O
3.3
8 - OD
Two-Wire Serial clock port, open drain driver with 8mA drive strength. Bidirectional
signal is used by both the master and slave controllers for clock signaling. Pin
floats on reset.
DESCRIPTION
Core power, +1.8VDC. Used in the chip internal DSP, logic and interfaces.
Temperature monitor common I/O pin.
NOTES:
14. Unless otherwise specified, all pin names are active high. Those that are active low have an “n” prefix, such as nRESET.
15. OD means pad has open drain driver.
16. All power and ground pins of same names are to be tied together to all other pins of their same name. (i.e., RVDD pins to be tied together, RGND pins
tied together, CVDD pins tied together, CGND pins to be tied together, PWMVDD pins tied together, PWMGND pins tied together, etc.)
Overview
the device’s control interface within production amplifier
products.
The D2-41x51-QR devices are integrated System-on-Chip (SoC)
audio processor and Class D amplifier PWM controller. They
include complete digital audio input selection, signal routing,
complete audio processing, and selectable PWM output options
for driving multiple output power stage configurations. Stereo I2S
and stereo S/PDIF digital input support, plus I2C and 2-wire SPI
control interfaces enable integration compatibility with existing
system architectures and solutions. The audio path includes a
stereo Sample Rate Converter (SRC) plus device-specific audio
enhancement processing algorithms.
Output Configurations
A 5-channel PWM engine with application-selected configuration
settings provides output paths for combinations of output
channels. Application dependent configuration selection includes
PWM controller outputs for driving Stereo Speaker, 2.1 Speaker,
and Stereo Bi-Amp Speaker solutions, as well as Stereo Line,
Headphone Outputs, or Subwoofer Line Outputs. Depending on
configuration settings, Full-Bridge, Half-Bridge and Bridge-TiedLoad (BTL) output stage topologies, with either discrete or
integrated output stages are supported.
Programmable Audio Processing
Programmable parameter settings for audio processing include
volume control, path routing and mixing, high/low pass filtering,
multi-band equalizers, compressors, and loudness. These
parameters can be adjusted using the D2Audio™ Canvas II™
software during design and development, or can be set through
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Typical Performance
Final system performance is largely determined by the amplifier
configuration, its choice of output power stages and
components, and overall system design. Typical performance
capability of amplifier power outputs varies from less than 10
Watts to systems over 150 Watts. System audio performance
includes 20Hz to 20kHz frequency response, SNR of greater than
100dB, and THD+N performance typically below 0.1%.
Audio Enhancement Processing
The D2-41x51-QR devices include D2Audio™ SoundSuite™
(within the D2-41051 device) and DTS®(SRS) WOW/HD™ (within
the D2-41151 device) audio enhancement algorithms. These
functions are integrated within the firmware of each device, and
are part of the standard audio signal flow.
Functional Description
Figure 4 shows a block diagram of the D2-41x51-QR devices, and
serves as a reference for many of the items in the following
descriptions. Additional information, including detailed
programming and parameter data, communication detail, and
amplifier design implementation is described in the
D2-41x51-QR Technical Reference document, available from
Intersil Corporation.
FN6783.1
May 5, 2016
D2-41051, D2-41151
Serial Audio Digital Input
DSP
The D2-41x51-QR devices include one Serial Audio Interface (SAI)
port accommodating two channels of digital audio input. This SAI
port supports the I2S digital audio industry standard, and can carry
up to 24-bit Linear PCM audio words. The SAI input port operates in
slave mode only. The digital audio input from the SAI input port
routes directly through the Sample Rate Converters (SRC). Either
this I2S digital input or the S/PDIF digital input may be selected
as the audio path source.
A 24-bit fixed-point Digital Signal Processor (DSP) controls the
majority of audio processing and system control functions within
the D2-41x51-QR devices.
S/PDIF Digital Audio I/O
The D2-41x51-QR contains one IEC60958 compliant S/PDIF
Digital receiver input and one IEC60958 compatible S/PDIF
Digital transmitter.
The S/PDIF receiver input includes an input transition detector,
digital PLL clock recovery, and a decoder to separate the audio
data. The receiver meets the jitter tolerance specified in
IEC60958-4.
The S/PDIF transmitter complies with the consumer applications
defined in IEC60958-3. The transmitter supports 24-bit audio
data, but does not support user data and channel status.
Compressed digital formats are not decoded within the
D2-41x51-QR devices. But a bit-exact pass-through mode from
the SPDIFRX input to the SPDIFTX output is supported, allowing
for designs that require that the IEC61937-compliant original
compressed audio input bitstream be made available at the
product’s S/PDIF output.
Sample Rate Converter
The D2-41x51-QR devices include a 2-channel asynchronous
sample rate converter (SRC). This SRC is used to convert audio
data input sampled at one input sample rate, to a fixed 48kHz
output sample rate, aligning asynchronous input audio streams
to a single rate for system processing. Audio data presented to
the SRC can be from either the SAI or S/PDIF input sources, with
an input sample rate from 16kHz to 192kHz.
In addition to converting the input sample rate to the output
sample rate, input clock jitter and sampling jitter are attenuated
by the SRC.
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Audio path signal routing, programmable-parameter processing
blocks, and control logic are defined within the device’s internal
firmware. Signal flows through the device are buffered and
processed through hardware specific-function blocks, such as the
Sample Rate Converter.
Audio Processing And Signal Flow
The audio processing within the D2-41x51-QR devices is defined
by the internal ROM firmware, and executed by the DSP. This
firmware defines the audio flow architecture and the processing
blocks used in that definition. Figure 5 on page 16 shows the
signal flow for the D2-41x51-QR devices. General audio
processing functions within this architecture include:
• Matrix Mixers
• Routers
• Compressors and Limiters
• Tone Controls
• Multi-Band Equalizers (fully parametric and shelving)
• High-Pass and Low-Pass Crossover Filters
• Volume and Level Controls
• Loudness Compensation
• Input Signal Selection
Signal flow and total system definition is defined by the internal
device firmware, but each of these blocks are programmable,
allowing for adjustment of all of their parameters.
Signal flow and details of each of these audio processing blocks
are shown in Figure 5. Programming details, register
identification, and parameter calculations are included in the
D2-41x51-QR Technical Reference document.
FN6783.1
May 5, 2016
SDIN
LRCK
SERIAL AUDIO
INTERFACE PORT
(I2S DATA TYPE
RECEIVER)
MCLK
14
SPDIFRX
SPDIFTX
S/PDIF
DIGITAL AUDIO
RECEIVER,
TRANSMITTER
SAMPLE RATE CONVERTERS
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SCLK
D2-41051, D2-41151
DAE-4™
INPUT
PROCESSING
SCL
PWM3
PWM4
QUANTIZER
2-WIRE
(I2CCOMPATIBLE)
PWM6
D2AUDIO SOUNDSUITE™
SRS WOW/HD®
MIXERS,
ROUTERS
VOL1/
MISO
VOL0/
nSS
PWM7
PROTECT0
PROTECT
INPUTS
TEMPREF/
SCK
TEMP1/
MOSI
PWM5
ENHANCEMENT
AUDIO PROCESSING ALGORITHMS
(PART-NUMBER DEPENDENT)
FIRMWARE (ROM)
IRQB
PWM2
NOISE SHAPER
OUTPUT DRIVE
IRQA
SDA
PWM CORRECTION
PROTECT1
PROTECT2
SPI, I/O
TIMERS,
I/O
PLL
CONFIG,
I/O
POWER SUPPLY
2
2
2
2
2
CGND
CVDD
RGND
RVDD
PWMGND
PWMVDD
PLLGND
PLLVDD
XTALO
XTALI
NMUTE/
TIO1
TEMPCOM/
TIO0
FN6783.1
May 5, 2016
FIGURE 4. D2-41051, D2-41151 FUNCTIONAL BLOCK DIAGRAM
2
PSSYNC/
CFG1
nERROR/
CFG0
D2-41051, D2-41151
nRSTOUT
PWM0
PWM1
AUDIO PROCESSING
TONE CONTROLS
MULTI-BAND EQUALIZERS
HIGH/LOW-PASS
CROSSOVERS
LOUDNESS
COMPRESSORS/LIMITERS
INDIVIDUAL CHANNEL
CONTROL
VOLUME CONTROL
INPUT
SELECTION
CONTROL,
INITIALIZATION
LINEAR
INTERPOLATOR
24-BIT FIXED-POINT DIGITAL SIGNAL PROCESSOR
WITH 56-BIT MAC
(SIGNAL PROCESSING AND CONFIGURATION BLOCKS
DEFINED BY DEVICE ROM FIRMWARE)
nRESET
TEST
5 CHANNEL PULSE WIDTH
MODULATOR ENGINE
D2-41051, D2-41151
Audio Enhancement Feature Processing
Timers
Additional enhancement audio processing algorithms are
included within specific part number options of the
D2-41x51-QR devices. These specific enhancements are:
There are two independent timers used for device and system
control. One timer is used for internal references, and the other is
used for the temperature sensing control. There are two I/O pins
associated with the timers, and these pin functions are defined
by the device firmware. Timer 0 is used for the timing-related
executions of the temperature monitoring algorithm. Its pin
(TIO0) is used as an input and output for that temperature
monitoring operation. Timer 1 is used for internal functions of the
device. Its pin (TIO1) is not used for this timing operation, and is
defined by device firmware as the nMUTE I/O pin. Timer
operation is established internally by firmware and not
programmable.
• D2Audio™ SoundSuite™ (WideSound™, DeepBass™, Audio
Align™, and ClearVoice™) Audio Processing
(with the D2-41051 device)
• DTS®SRS WOW/HD™
(with the D2-41151 device)
Each of these enhancements are unique only to the particular
part number, and each enhancement has its own set of
programmable parameters to control operation. The location of
these enhancements within the signal flow is shown in Figure 5
on page 16.
I2C 2-Wire Control Interface
PWM Audio Outputs
The D2-41x51-QR devices include a 2-Wire I2C compatible
interface for communicating with an external controller.
The D2-41x51-QR devices incorporate five PWM output channels
that are mapped to eight PWM output pins. Each of the PWM
channels and their pins are used for driving output power stages,
and/or for line level outputs, depending on the selected
configuration mode.
This interface is usable with either an external microcontroller
interface, or for communication to EEPROMs, or other
compatible peripheral chips. The I2C interface is multi-master
capable, operates as independent master and slave, and
supports normal and fast mode operation.
The outputs support multiple PWM amplifier output topologies.
These supported topologies include half-bridge N+N or N+P, and
full-bridge N+N or N+P using 2-level modulation with 2 or
4-quadrant control. The channel and function assignment of the
eight output pins as well as the associated output topology is
established by the output mode configuration settings. Refer to
“Output Mode Configurations” on page 18 for description and
selection of these output configurations, and their associated
mapping of the PWM output pins. Also refer to the D2-41x51-QR
Technical Reference document for additional operation of the
outputs.
Serial Peripheral Interface (SPI)
Using a simple passive filter, the PWM outputs will drive line-level
outputs at a nominal 1Vrms. Headphone outputs or line-level
outputs that require a 2Vrms or higher output level are
implemented using an active filter.
I/O Control Pins
Several device pins are used as specific-function inputs and
outputs and are used to control amplifier and device operation.
Some pins are multiple-purpose, where their functions are
different depending on the device operating state. Functions of
these pins are defined in the pin definition list, and additional
descriptions are included within the functional block descriptions
elsewhere in this document. These pins are implemented within
the device hardware as general purpose inputs/outputs.
However, their operation is not programmable, and their specific
function is defined by the D2-41x51-QR internal firmware.
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15
The Serial Peripheral Interface (SPI) is an alternate serial input
port that provides an interface for loading parameter data from
an optional EEPROM or Flash device during boot-up operation.
The four SPI interface pins are all shared. This interface functions
only as an input port for external boot operation and does not
operate as an interactive control port. During a reset condition,
initiating the boot-up process, the four pins (TEMPREF/SCK,
TEMP1/MOSI, VOL1/MISO, VOL0/nSS) operate as the SPI port.
As soon as the boot-up process is completed and the device
begins executing its firmware program, these pins are no longer
used for SPI functions, and operate as assigned by the firmware.
Control Register Summary
The control register interface is used for an external controller to
adjust the amplifier’s programmable settings and adjustments
within its signal flow. These parameters for each of the signal
processing blocks are accessed through a register programming
interface, and each parameters is defined with its specific
register address. Audio input selection (I2S input or S/PDIF
receiver input) and output elements (PWM amplifier and line
outputs, and S/PDIF transmitter) are controlled through their
register parameters.
All of these control register functions are defined in the
Application Programming Interface (API) specification within the
D2-41x51-QR Technical Reference document.
FN6783.1
May 5, 2016
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INPUT
SELECT
S/PDIF
DIGITAL
INPUT
S/PDIF
COMPRESSOR 1
SRC
I2S
DIGITAL
INPUT
DIGITA
L
2
2X2
MIXER
COMPRESSOR 2
LICENSED
AUDIO
PROCESSING
ALGORITHM
*(SEE NOTE)
TONE 1
5 BAND EQ 1
SPEAKER EQ 1
TONE 2
5 BAND EQ 2
SPEAKER EQ 2
1
2
4X4
ROUTER
3
4
16
* NOTE: DEVICE-DEPENDENT LICENSED AUDIO PROCESSING ALGORITHM
SUPPORTING D2AUDIO SOUNDSUITE™, OR SRS WOW/HD®. REFER TO DEVICE
ORDERING INFORMATION FOR PART NUMBER SPECIFYING EACH
ALGORITHM.
5
2X1
MIXER
2
3
4
5
HP 1
LP 1
3 BAND EQ 1
LOUDNESS 1
LIMITER 1
VOLUME 1
HP 2
LP 2
3 BAND EQ 1
LOUDNESS 2
LIMITER 2
VOLUME 2
HP 3
LP 3
3 BAND EQ 1
LOUDNESS 3
LIMITER 3
VOLUME 3
HP 4
LP 4
3 BAND EQ 1
LOUDNESS 4
LIMITER 4
VOLUME 4
HP 5
LP 5
LOUDNESS 5
LIMITER 5
VOLUME 5
MASTER
VOLUME
CONTROL
PWM CHANNEL 0
PWM PIN 0
PWM CHANNEL 1
PWM
CHANNEL
PWM CHANNEL 2
PIN
MAPPING
AND
PWM CHANNEL 3
DRIVE
PWM CHANNEL 4
PWM PIN 1
PWM PIN 2
PWM PIN 3
PWM PIN 4
PWM PIN 5
PWM PIN 6
PWM PIN 7
PWM PIN
OUTPUTS
FIGURE 5. D2-41051, D2-41151 AUDIO SIGNAL FLOW
D2-41051, D2-41151
CROSSOVERS
1
FN6783.1
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D2-41051, D2-41151
Temperature Sensing
The temperature sensing algorithm utilizes external hardware on
the amplifier’s design to monitor system temperature. This
external hardware includes a negative temperature coefficient
(NTC) resistor located physically on the design in an areas that
require monitoring.
This operation uses three of the I/O pins (TEMPREF/SCK,
TEMP1/MOSI, and TEMPCOM/TIO1). These pins have shared
functions. During device initialization, these pins operate as part
of the SPI interface, but after the firmware is executing, the SPI
functionality turns off and these pins are dedicated to the
temperature monitoring function.
Overcurrent Sensing
Overcurrent sensing is accomplished with current threshold
detectors connected in the power supply used at each power
stage output of the amplifier design.
Design of these detectors is described in the D2-41x51-QR
Technical Reference document, but their purpose is to generate a
pulse or logic level upon detection of high current, where this
logic level is connected to one of the three protection input
(PROTECT[0:2]) pins.
These protection input pins are primarily intended for protecting the
PWM powered output stages. They are activated by either a pulse or
level driven into the pin. Firmware within the D2-41x51-QR devices
monitors the internal hardware connected to these pins, and adjusts
or disables the PWM output drive, depending on the conditions
monitored on these protection input pins.
The number of powered outputs in a design depends on which
one of the four configurations is defined. The configuration
settings, established upon device reset through the configuration
pins, also determines which of the protection inputs are used.
Power Supply Synchronization
The PSSYNC/CFG1 pin provides a power supply synchronization
signal for switching power supplies. Firmware configures this pin
to the frequency and duty cycle needed by the system switching
regulator. This synchronization allows switching supplies used
with the device to operate without generating in-band audio
interference signals that could be possible if the switching power
supply is not locked to the amplifier switching.
This PSSYNC/CFG1 pin is a shared pin. During device reset and
initialization, it operates as one of two configuration input pins,
where its high or low logic state is used to set the amplifier
configuration mode. After completion of reset and when the
device firmware begins operating, this pin becomes the PSSYNC
output.
Error Reporting
Internal monitoring of system and device operation uses an I/O
pin (nERROR/CFG1) as an output to signal an external system
controller of a channel shutdown error condition. This output may
be used to turn on a simple indicator.
The error output is also used to signal an external microcontroller
that the I2C bus may be busy. When the error output is low during
system initialization, the I2C bus is busy as a master device.
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17
This error output is active low and only becomes used as an
output after the device firmware has initialized and began
running. This same pin is shared as an input. During a reset
condition, this pin operates as an input, and is one of two input
pins that are used to define the configuration mode. A resistor
pull-up or pull-down on this pin establishes this mode input
configuration state. After completion of the initialization
sequence, these resistors do not affect the error output
operation.
Power Sequencing
The CVDD and RVDD (including PWMVDD) power supplies should
be brought up together to avoid high current transients that could
fold back a power supply regulator. The PLLVDD may be brought
up separately. Best practice would be for all supplies to feed from
regulators with a common power source. Typically this can be
achieved by using a single 5V power source and regulating the
3.3V and 1.8V supplies from that 5V source. As noted in the pin
specifications of this document, all voltages of the same names
must be tied together at the board level.
Clock and PLL
Clock is generated on-chip, using a fundamental-mode crystal
connected across the XTALI and XTALO pins. XTALO is an output,
but is designed only to drive the crystal, and not connect to any
other circuit. XTALI is an input, connecting to the other side of the
crystal.
The clock generation contains a low jitter PLL critical for low
noise PWM output and a precise master clock source for sample
rate conversion and the audio processing data paths. The clock
system is used throughout the device, and provides clock
generators for brown-out detection, system and power-on reset,
DSP, S/PDIF transmitter, and the PWM engine.
Clock and PLL hardware functions are controlled by internal
device firmware. They are not programmable and are optimized
for device and system operation.
Reset and Device Initialization
The D2-41x51-QR devices must be reset to initialize and begin
proper operation. A system reset is initiated by applying a low level
to the nRESET input pin. External hardware circuitry or a controller
within the amplifier system design must provide this reset signal
and connect to the nRESET input to initiate the reset process.
Device initialization then begins after the nRESET pin is released
from its low-active state.
The chip contains power rail sensors and brownout detectors on
the 3.3V and 1.8V power supplies. A loss or droop of power from
either of these supplies will trigger their brownout detectors which
will assert the nRSTOUT pin, driving it low. This pin should connect
to the nRESET input through hardware on the amplifier design, to
ensure a proper reset occurs if the power supply voltages drop
below their design specifications. Refer to the D2-41x51-QR
Technical Reference document for connection recommendations.
At the deassertion of nRESET, the chip will read the status of the
boot mode selection pins (IRQA and IRQB) and begin the boot
process, determined by the boot mode that is defined by these
pins’ logic state. These device pins are strapped either high or
low on the system’s design (PCB), and it is the state of these pins
FN6783.1
May 5, 2016
D2-41051, D2-41151
that is latched into, and defines boot mode operation. Refer to
the Boot Modes section in this document for related descriptions.
Refer to the D2-41x51-QR Technical Reference document for
details of connection and operation of initialization and strapping
options.
TABLE 2. D2-41x51-QR OUTPUT CONFIGURATION MODES
CONFIG
MODE
0
Boot Modes
NAME
FUNCTION
2.0 L/R • Powered Left and Right Outputs With
4-Quadrant
4-Quadrant, Full Bridge Drivers.
• No Line-Level Outputs
The D2-41x51-QR devices contain internal firmware to operate
the part and run the amplifier system. Parameter information
that is used by the programmable settings can be written to the
device after it is operational and running, and parameter data
can also be read at boot time, allowing saved parameter settings
to be used in processing. The device is designed to boot in one of
four possible modes, allowing control and data to be provided
from these boot sources:
1
2.0 L/R
+
L/R/Sub
Line
• Powered Left and Right Outputs With
2-Quadrant, Full Bridge Drivers.
• Single-Ended Stereo Left + Right Line-Level
Outputs.
• Dual-Ended Subwoofer Line-Level Output
2
• I2C Slave (to external Microcontroller)
• I2C EEPROM
2.1
L/R/Sub
+
L/R Line
• Powered Left and Right Outputs With
2-Quadrant Half Bridge Drivers.
• Powered Subwoofer Output With 2-Quadrant,
Full Bridge Driver.
• Internal Device ROM Only
• Single-Ended Stereo Left + Right Line-Level
Outputs.
• SPI Slave
• Crossover Filtering Added To Signal Flow.
The specific boot mode is selected based on the state of the
IRQB and IRQA input pins at the time of reset de-assertion. Boot
modes are shown in Table 1.
TABLE 1. BOOT MODE SETTINGS
BOOT
MODE
IRQB
PIN
IRQA MASTER/S
PIN
LAVE
DESCRIPTION
0
0
0
I2C Slave
Operates as I2C slave, boot at
address 0x88. An external 2-wire
I2C master provides the boot code.
1
0
1
I2C Master Operates as 2-wire master; loads
boot code from ROM on I2C port.
2
1
0
-
Internal ROM Boot/Operation
3
1
1
SPI Slave
SPI slave. External SPI master
provides boot code.
The device initializes as defined by its boot mode. But it gets its
configuration and parameter data from the host device. This host
device can be either an external controller, or from an EEPROM. If
a system uses both an external controller and an EEPROM, the
EEPROM will load first, and during this time, the controller must
remain off the I2C bus.
Output Mode Configurations
The D2-41x51-QR devices support four amplifier output
configuration modes of powered output and line output
combinations. These four modes are shown in Table 2.
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18
3
2.2
Bi-Amp
• Powered Left and Right Bi-Amp Outputs With
2-Quadrant Drivers.
• Crossover Filtering Added To Signal Flow.
These configuration modes utilize different combinations of the
five PWM output channels, and each mode maps the eight PWM
pins to their appropriate PWM channel path. This channel
content and mapping of the pins is shown in Table 3 on page 19.
Of the total eight PWM pins, not all pins are used with every
configuration mode. Timing and drive characteristics of each
PWM pin output are automatically programmed for correct
operation when those pins are connected to their designated
output stages.
In modes 2 and 3, the filtering for high and low pass crossovers is
applied to the audio signal flow path, enabling the appropriate
high or low pass content to be properly filtered for the PWM
output channels.
The protect pin inputs are mapped to the PWM channels that are
used for the powered outputs. This protect pin mapping
assignment is shown in Table 3 for the different configurations.
Configuration Modes Assignment
The configuration mode is assigned when the D2-41x51-QR
device exits its reset state, when at that time, the logic status of
the PSSYNC/CFG1 and nERROR/CFG0 pins are latched into
internal device registers. During this initialization time, these
pins operate as logic inputs. After completion of the initialization
and the internal firmware begins executing, these pins are reassigned as outputs for their shared functions, and the internal
latched logic state that defines the configuration mode remains
until the device is powered down or reset again. Each mode
requires specific amplifier design hardware connection, and the
configuration pin logic levels are defined through pull-up or pulldown resistors installed on that design’s board. These modes are
not programmable and are not intended to be changed for each
hardware design.
FN6783.1
May 5, 2016
D2-41051, D2-41151
TABLE 3. PWM CHANNEL ASSIGNMENT AND CONFIGURATION DETAILS
CONFIG
MODE
CONFIG
NAME
0
2.0 L/R
4-Quadrant
1
2
3
PSSYNC
/CFG1 PIN
LOGIC
LEVEL
nERROR
/CFG0 PIN
LOGIC
LEVEL
PWM
CHANNEL
NUMBER
PWM
CHANNEL
CONTENT
PWM
PINS
PROTECT
PIN
ASSIGNMENT
SUPPORTED
OUTPUT
TOPOLOGY
0
0
0
L-Spkr
0-3
0
4-Quadrant,
Full Bridge
Powered Left
1
R-Spkr
4-7
1
4-Quadrant,
Full Bridge
Powered Right
2
-
-
-
-
-
3
-
-
-
-
-
4
-
-
-
-
-
0
L-Spkr
0, 1
0
2-Quadrant,
Full Bridge
Powered Left
1
R-Spkr
2, 3
1
2-Quadrant,
Full Bridge
Powered Right
2
L-Line
6
-
Line Level
Line/Headphone Left
3
R-Line
7
-
Line Level
Line/Headphone Right
4
Sub
4, 5
-
Line Level
Line Level Sub
0
L Spkr
0, 1
0
Half Bridge
Powered Left
1
R Spkr
2, 3
1
Half Bridge
Powered Right
2
L Line
6
-
Line Level
Line/Headphone Left
3
R Line
7
-
Line Level
Line/Headphone Right
4
Sub
4, 5
2
2-Quadrant,
Full Bridge
Powered Sub
0
L Hi-Freq
0, 1
0,1
Half Bridge
Powered Left HF
1
L Lo-Freq
2, 3
1,0
Half Bridge
Powered Left LF
2
R Hi-Freq
4, 5
2
Half Bridge
Powered Right HF
3
R Lo-Freq
6, 7
2
Half Bridge
Powered Right LF
4
-
-
-
-
-
2.0 L/R
+
L/R/Sub
Line
2.1
L/R/Sub
+
L/R Line
2.2
Bi-Amp
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0
1
1
0
1
1
19
AUDIO
FUNCTION
FN6783.1
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D2-41051, D2-41151
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted.
Please go to the web to make sure that you have the latest revision.
DATE
REVISION
CHANGE
May 5, 2016
FN6783.1
Updated entire datasheet applying Intersil’s new standards.
Updated the Ordering Information table on page 2.
Updated Note 5 on page 4.
Added the Disclaimer for DTS®(SRS) Technology License Required Notice.
Added Revision History section.
Replaced Products verbiage to About Intersil verbiage.
Updated POD to the latest revision changes are as follows:
-Corrected Note 4 from: “Dimension b applies to...” to: “Dimension applies to...” 'b' leftover from when
dimensions were in table format.
-Enclosed Notes #'s 4, 5 and 6 in a triangle.
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/support.
Trademarks
DAE-4™, Intelligent Digital Amplifier™ and D2Audio CanvasII™, and D2Audio SoundSuite™ are trademarks, and D2™, D2A™,
D2Audio™ are registered trademarks of Intersil Corporation. DTS®(SRS) and DTS®(SRS) WOW/HD™ are registered trademarks of
DTS®(SRS) Corporation. Windows™ is a registered trademark of Microsoft Corporation. Other product names are for identification
purposes and may be trademarks and/or registered trademarks of their respective companies.
Disclaimer for DTS®(SRS) Technology License Required Notice:
NOTICE OF LICENSE REQUIREMENT: Supply of this implementation of DTS technology to DTS Product Licensees directly or through a
distributor does not incur a royalty payment or convey a license, exhaust DTS’ rights in the implementation, or imply a right under any
patent or any other industrial or intellectual property right of DTS to use, offer for sale, sell, or import such implementation in any
finished end-user or ready-to-use final product. A license from and royalty payment to DTS is required prior to and for such use.
For additional products, see www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
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FN6783.1
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D2-41051, D2-41151
Package Outline Drawing
L48.7x7
48 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE
Rev 5, 4/10
4X 5.5
7.00
A
44X 0.50
B
37
6
PIN 1
INDEX AREA
6
PIN #1 INDEX AREA
48
1
7.00
36
4. 30 ± 0 . 15
12
25
(4X)
0.15
13
24
0.10 M C A B
48X 0 . 40± 0 . 1
TOP VIEW
4 0.23 +0.07 / -0.05
BOTTOM VIEW
SEE DETAIL "X"
( 6 . 80 TYP )
(
4 . 30 )
C
0.10 C
BASE PLANE
0 . 90 ± 0 . 1
SEATING PLANE
0.08 C
SIDE VIEW
( 44X 0 . 5 )
C
0 . 2 REF
5
( 48X 0 . 23 )
( 48X 0 . 60 )
0 . 00 MIN.
0 . 05 MAX.
TYPICAL RECOMMENDED LAND PATTERN
DETAIL "X"
NOTES:
1. Dimensions are in millimeters.
Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
3. Unless otherwise specified, tolerance : Decimal ± 0.05
4. Dimension applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
5. Tiebar shown (if present) is a non-functional feature.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 indentifier may be
either a mold or mark feature.
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FN6783.1
May 5, 2016
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