STAC9758 Datasheet, PDF (95/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
8.6.11.
Digital Audio Control (6Ah, Page 00h)
To access Register 6Ah, Page 00h must be selected in Register 24h.
Default: 0000h
D15
D14
D13
D12
D11
D10
RESERVED
D7
D6
D5
D4
D3
D2
RESERVED
HPFOCDIS
SPOR
D9
D1
DO1
D8
D0
RESERVED
Bit(s) Reset Value R/W Name
Description
15:
0
RO RESERVED Bits not used, should read back 0
High Pass Filter Offset Calculation Disable
3
0
RW HPFOCDIS 0 = Calculation enabled.
1 = Calculation disabled.
Over-ride Register 2Ah, D12 write-lock when SPDIF_EN = 1.
2
0
RW SPOR All bits except SPDIF sample-rate are affected (D13-D12). Allows for
sub-code changing on-the-fly.
SPDIF Digital Output Source Selection:
1
0
RW DO1 DO1 = 0; PCM data from the AC-Link to SPDIF
DO1 = 1; ADC record data to SPDIF
0
0
RO RESERVED Bits not used, should read back 0
This read/write register is used to program the SPDIF output status. In the default state, the PCM data
path from AC_LINK is enabled and the ADC record inputs are disabled. The DO1 bit controls the input
source for the PCM to digital output converters.
IDT™
95
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206