Cirrus Logic CS4207 - Manual (Page 50)

50 DS880F4
CS4207
Response Format:
Bits [15:0] must be programmed with the same value programmed into the Stream Descriptor, so that the
data format being transmitted on the link matches what is expected by the consumer of the data.
If the TYPE is set to Non-PCM, the controller pushes data over the link and is not concerned with format-
ting. The base rate, data type, and number of Words (MULT) to send each valid frame are specified to
control the rate at which the non-PCM data is sent.
Bits Type Default Description
31:16 Read Only 0000h Reserved
15 Read/Write 0b
Stream Type (TYPE): If TYPE is non-zero, the
other bits in the format structure have other
meanings.
0: PCM
1: Non-PCM
14 Read/Write 0b
Sample Base Rate (BASE):
0 = 48 kHz
1 = 44.1 kHz
13:11 Read/Write 000b
Sample Base Rate Multiple (MULT):
000 = 48 kHz/44.1 kHz or less
001 = x2 (96 kHz, 88.2 kHz, 32 kHz)
010 = x3 (144 kHz)
011 = x4 (192 kHz, 176.4 kHz)
100-111 =
Reserved
10:8 Read/Write 000b
Sample Base Rate Divisor (DIV):
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)
110 = Divide by 7
111 = Divide by 8 (6 kHz)
7 Read Only 0b Reserved
6:4 Read/Write 000b
Bits per Sample (BITS): Bits in each sample:
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.
010 = 20 bits. The data will be packed in memory
in 32-bit containers on 32-bit boundaries.
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.
101-111 =
Reserved
3:0 Read/Write 0000b
Number of Channels (CHAN): Number of chan-
nels in each frame of the stream:
0000 = 1
0001 = 2
…
1111 = 16