IDTSTAC9752AXTAED1XR IDT, Integrated Device Technology Inc, IDTSTAC9752AXTAED1XR Datasheet - Page 43

• Manufacturer Part Number: IDTSTAC9752AXTAED1XR
• Description: IC CODEC AC'97 MIC/JACK 48-QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9752AXTAED1XR

• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 92
• 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: STAC9752AXTAED1XR

IDT™
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
5.6.
Slot Assignments for Audio
When the AC‘97 Digital Controller addresses a Secondary CODEC, the Slot 0 Tag bits for Address
and Data must be 0. A non-zero, 2-bit CODEC ID in the LSBs of Slot 0 indicates a valid Read or
Write Address in Slot 1, and the Slot 1 R/W bit indicates presence or absence of valid Data in Slot 2.
The AC-link output slots (transmitted to the Codec) are defined as follows:
OUTGOING STREAMS
6,7,8,9
(Controller output - SDATA_OUT)
INCOMING STREAMS
AC‘97 CODEC Status Frame
Slot
3,4
Secondary Read Frame N,
Secondary Write Frame N,
0
1
2
5
AC‘97 Digital Controller
AC‘97 Digital Controller
(codec output - SDATA_IN)
N+1, SDATA_IN
TAG PHASE
Figure 19. Bi-directional AC-Link Frame with Slot assignments
Control CMD ADDR write port
SDATA_OUT
SDATA_OUT
PCM L & R DAC playback
Function
PCM Center, Rear, LFE
Control DATA write port
SLOTS
SYNC
Modem Line 1 DAC
SDATA_OUT TAG
Name
Table 12. Secondary CODEC Addressing: Slot 0 tag bits
Table 13. AC-Link Output Slots Dedicated To CODEC
TAG
TAG
0
STATUS
ADDR
ADDR
CMD
(Valid Frame)
1
Slot 0, bit 15
STATUS
DATA
CMD
DATA
2
1
1
1
MSBs indicate which slots contain valid data; LSBs convey Codec ID
43
LEFT
LEFT
16, 18, or 20-bit PCM data for Center, L & R Rear, LFE channels
PCM
PCM
3
Read/write command bit plus 7-bit Codec register address
PCM
PCM
(Valid Slot 1 Address)
4
RT
RT
16, 18, or 20-bit PCM data for left and right channels
LINE1
ADC
16-bit modem data for modem line 1 output
Slot 0, bit 14
5
N A
DATA PHASE
16-bit command register write data
PCM
CTR
PCM
MIC
6
0
0
1
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
Description
PCM
8
STAC9752A/9753A
Vendor
(Valid Slot 2 Data)
RSVD
PCM
LFE
9
Slot 0, bit 13
SPDIF
LINE2
10
ADC
0
0
1
SPDIF
HSET
11 12
ADC
STATUS
CTRL
IO
IO
Slot 0, Bits 1-0
(CODEC ID)
01, 10, or 11
01, 10, or 11
PC AUDIO
00
V 1.5 1206