Intel® HD Audio (D27:F0)
10.3.38 SDFMT—Stream Descriptor Format Register
Memory Address:
Input Stream[0]: LBAR + 92h
Input Stream[1]: LBAR + B2h
Output Stream[0]: LBAR + D2h
Output Stream[1]: LBAR + F2h
0000h
Attribute: R/W, RO
Default Value:
Size:
16 bits
Default
Bit
15
14
and
Access
Description
0
RO
Reserved
Sample Base Rate: R/W
0
R/W
0 = 48 kHz
1 = 44.1 kHz
Sample Base Rate Multiple: R/W
000 = 48 kHz, 44.1 kHz or less
001 = x2 (96 kHz, 88.2 kHz, 32 kHz)
010 = x3 (144 kHz)
000b
R/W
13:11
011 = x4 (192 kHz, 176.4 kHz)
Others = Reserved.
Sample Base Rate Divisor:
000 = Divide by 1(48 kHz, 44.1 kHz)
001 = Divide by 2 (24 kHz, 22.05 kHz)
010 = Divide by 3 (16 kHz, 32 kHz)
011 = Divide by 4 (11.025 kHz)
100 = Divide by 5 (9.6 kHz)
101 = Divide by 6 (8 kHz)
000b
R/W
10:8
110 = Divide by 7
111 = Divide by 8 (6 kHz)
0
RO
7
Reserved
Bits per Sample (BITS):
000 = 8 bits. The data will be packed in memory in 8-bit containers on
16-bit boundaries
001 = 16 bits. The data will be packed in memory in 16-bit containers on
16-bit boundaries
000b
R/W
010 = 20 bits. The data will be packed in memory in 32-bit containers on
32-bit boundaries
6:4
011 = 24 bits. The data will be packed in memory in 32-bit containers on
32-bit boundaries
100 = 32 bits. The data will be packed in memory in 32-bit containers on
32-bit boundaries
Others = Reserved.
Number of Channels (CHAN): Indicates number of channels in each
frame of the stream.
0000 =1
0001 =2
........
0h
R/W
3:0
1111 =16
Datasheet
167
INTEL [ INTEL ]
