IDTSTAC9753XXTAEB2XR IDT, Integrated Device Technology Inc, IDTSTAC9753XXTAEB2XR Datasheet - Page 29

• Manufacturer Part Number: IDTSTAC9753XXTAEB2XR
• Description: IC CODEC AC'97 MIC/JACK 48-QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9753XXTAEB2XR

• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9753XXTAEB2XR

5. AC-LINK DIGITAL INTERFACE
IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
5.1.
Overview
AC-Link is the 5 pin digital serial interface that links the AC‘97 CODEC to the Controller. The
AC-Link protocol is a bi-directional, fixed clock rate, serial digital stream. AC-Link handles multiple
input and output PCM audio streams, as well as control register accesses employing a time division
multiplexed (TDM) scheme that divides each audio frame into 12 outgoing and 12 incoming data
streams, each with 20-bit sample resolution.
The STAC9752/9753 DACs, ADCs, and SPDIF can be assigned to slots 3&4, 6&9, 7&8 or 10&11.
6, 7, 8, 9 PCM Center, Surround L&R, LFE 20-bit PCM data for Center, Surround L&R, LFE channels
OUTGOING STREAMS
10-11
10-12
(Controller output - SDATA_OUT)
Slot
INCOMING STREAMS
3, 4
10
11
12
12
0
1
2
5
(codec output - SDATA_IN)
Figure 14. Bi-directional AC-Link Frame with Slot assignments
TAG PHASE
Control CMD ADDR write port
PCM L&R DAC playback
SLOTS
Control DATA write port
SYNC
Modem handset DAC
Modem Line 1 DAC
Modem Line 2 DAC
SDATA_OUT TAG
Modem I/O control
Double rate audio
Table 4. AC-Link output slots (transmitted from the Controller)
CODEC IRQ
SPDIF Out
Name
TAG
TAG
0
STATUS
ADDR
ADDR
CMD
1
29
STATUS
DATA
CMD
DATA
2
MSBs indicate which slots contain valid data; LSBs convey
CODEC ID
Read/write command bit plus 7-bit CODEC register address
16-bit command register write data
20-bit PCM data for Left and Right channels
16-bit modem data for modem Line 1 output
16-bit modem data for modem Line 2 output
16-bit modem data for modem Handset output
GPIO write port for modem Control
Can be used by CODEC if a modem CODEC is not present.
Optional AC-Link bandwidth for SPDIF output
Optional AC-Link bandwidth for 88.2 KHz or 96 KHz on L, C, R
channels
LEFT
LEFT
PCM
PCM
3
PCM
PCM
4
RT
RT
LINE1
ADC
5
NA
DATA PHASE
PCM
PCM
CTR
MIC
6
STAC9752/9753
Description
LSURR
Vendor
RSVD
PCM
7
Slot 12 can be used by the
AC'97 Codec if a Modem
Codec is not present.
RSURR
Vendor
RSVD
PCM
8
Vendor
RSVD
PCM
LFE
9
SPDIF
LINE2
10
ADC
SPDIF
HSET
11
ADC
REV 3.3 1206
STATUS
12
CTRL
IO
IO