STAC9752AXTAED1X IDT, Integrated Device Technology Inc, STAC9752AXTAED1X Datasheet - Page 42

• Manufacturer Part Number: STAC9752AXTAED1X
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of STAC9752AXTAED1X

• Lead Free Status / RoHS Status: Compliant

IDT™
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
5.5.
5.4.8.
5.4.9.
5.4.10.
5.5.1.
AC-Link Interoperability Requirements and Recommendations
Slots 7-8: Vendor Reserved
The left and right ADC channels of the STAC9752A/9753A may be assigned to slots 7&8 by Regis-
ter 6Eh.
NOTE: The ADC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
Slot 10 & 11: ADC
The left and right ADC channels of the STAC9752A/9753A may be assigned to slots 10&11 by Reg-
ister 6Eh.
NOTE: The ADC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
Slot 12: Reserved
AC-Link input frame slot 12 contains the GPIO status inputs and allows for audio interrupts. Slot 12
can be used by the AC’97 CODEC is a modem CODEC is not present.
“Atomic slot” Treatment of Slot 1 Address and Slot 2 Data
Command or Status Address and Data cannot be split across multiple AC-Link frames. The following
transactions require that valid Slot 1 Address and valid Slot 2 Data be treated as “atomic” (insepara-
ble) with Slot 0 Tag bits for Address and Data set accordingly (that is, both valid):
1. AC‘97 Digital Controller write commands to Primary CODECs
2. AC‘97 CODEC status responses
Whenever the AC‘97 Digital Controller addresses a Primary CODEC or an AC‘97 CODEC responds
to a read command, Slot 0 Tag bits should always be set to indicate actual Slot 1 and Slot 2 data
validity.
AC‘97 CODEC Status Frame
Primary Read Frame N,
Primary Write Frame N,
AC‘97 Digital Controller
AC‘97 Digital Controller
N+1, SDATA_IN
SDATA_OUT
SDATA_OUT
Function
Table 11. Primary CODEC Addressing: Slot 0 Tag Bits
(Valid Frame)
Slot 0, bit 15
1
1
1
42
(Valid Slot 1 Address)
Slot 0, bit 14
1
1
1
STAC9752A/9753A
(Valid Slot 2 Data)
Slot 0, bit 13
0
1
1
Slot 0, Bits 1-0
(CODEC ID)
PC AUDIO
00
00
00
V 1.5 1206