IDTSTAC9753XXTAEB2XR IDT, Integrated Device Technology Inc, IDTSTAC9753XXTAEB2XR Datasheet - Page 35

• 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

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
5.3.3.
5.3.4.
5.3.5.
5.3.6.
5.3.7.
AC-Link output frame slot 1 communicates control register address, and write/read command infor-
mation to the STAC9752/9753.
The first bit (MSB) sampled by AC‘97 indicates whether the current control transaction is a read or a
write operation. The following 7 bit positions communicate the targeted control register address. The
trailing 12 bit positions within the slot are reserved and must be stuffed with 0 by the AC‘97 Control-
ler.
Slot 2: Command Data Port
The command data port is used to deliver 16-bit control register write data in the event that the cur-
rent command port operation is a write cycle (as indicated by Slot 1, bit 19).
•
•
If the current command port operation is a read then the entire slot time must be stuffed with 0 by the
AC‘97 Controller.
Slot 3: PCM Playback Left Channel
AC-Link output frame slot 3 is the composite digital audio left playback stream. In a typical “Games
Compatible” PC this slot is composed of standard PCM (.wav) output samples digitally mixed (on the
AC‘97 Controller or host processor) with music synthesis output samples. If a sample stream of res-
olution less than 20-bits is transferred, the AC‘97 Controller must stuff all trailing non-valid bit posi-
tions within this time slot with 0.
The DAC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
Slot 4: PCM Playback Right Channel
AC-Link output frame slot 4 is the composite digital audio right playback stream. In a typical “Games
Compatible” PC this slot is composed of standard PCM (.wav) output samples digitally mixed (on the
AC‘97 Controller or host processor) with music synthesis output samples. If a sample stream of res-
olution less than 20-bits is transferred, the AC‘97 Controller must stuff all trailing non-valid bit posi-
tions within this time slot with 0.
The DAC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
Slot 5: Modem Line 1 Output Channel
Audio output frame slot 5 is reserved for modem operation and is not used by the STAC9752/9753.
Slot 6 - 11: DAC
The DAC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
18:12
11:0
Bit
19
Bit(19:4) Control Register Write Data (Stuffed with 0 if current operation is a read)
Bit(3:0) Reserved (Stuffed with 0)
Control Register Index
Read/Write command
Description
Reserved
Table 8. Command Address Port Bit Assignments
1= read, 0 = write
Sixty-four 16-bit locations, addressed on even byte boundaries
Stuffed with 0
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Comments
STAC9752/9753
REV 3.3 1206