wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 94

• Manufacturer Part Number: wm9714l
• Description: Ac?97 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

28h
2Ah
WM9714L
Register 28h is a read-only register that indicates to the driver which advanced AC’97 features the WM9714L supports.
Register 2Ah controls the S/PDIF output and variable rate audio.
w
REGISTER
REGISTER
ADDRESS
ADDRESS
15:14
11:10
9
8
7
6
3
2
1
0
10
5:4
2
0
BIT
BIT
ID
REV
AMAP
LDAC
SDAC
CDAC
VRM
SPDIF
DRA
VRA
SPCV
SPSA
SEN
VRA
LABEL
LABEL
00
01
0
0
0
0
0
1
0
1
1 (valid)
01 (slots 6, 9)
0 (OFF)
0 (OFF)
DEFAULT
DEFAULT
Indicates that the WM9714L is configured as the
primary codec in the system.
Indicates that the WM9714L conforms to AC’97
Rev2.2
Indicates that the WM9714L does not support slot
mapping
Indicates that the WM9714L does not have an
LFE DAC
Indicates that the WM9714L does not have
Surround DACs
Indicates that the WM9714L does not have a
Centre DAC
Indicates that the WM9714L does not have a
dedicated, variable rate microphone ADC
Indicates that the WM9714L supports S/PDIF
output
Indicates that the WM9714L does not support
double rate audio
Indicates that the WM9714L supports variable rate
audio
S/PDIF Validity Bit (Read Only)
1 = Valid
0 = Not valid
S/PDIF Slot Assignment Control
00 = Slots 3 and 4
01 = Slots 6 and 9
10 = Slots 7 and 8
11 = Slots 10 and 11
S/PDIF Output Enable Control
1 = Enabled
0 = Disabled
Variable Rate Audio Control
1 = Enable VRA
0 = Disable VRA (ADC and DAC run at 48kHz)
DESCRIPTION
DESCRIPTION
PP, Rev 3.2, October 2008
Pre-Production
Intel’s AC’97
Component
Specification,
Revision 2.2,
page 59
Digital Audio
(S/PDIF)
Output
REFER TO
REFER TO
94