CS4207 Datasheet, PDF (73/144 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio CODEC with Headphone Amp

Response Format:
Bits
31:8
Type
Read Only
7:4
Read/Write
3:0
Read/Write
CS4207
Default
000000h
0h
0h
Description
Reserved
Stream Number (SN): Indicates the stream
number used by the Output Converter. “0h” is
stream 0, “1h” is stream 1, etc.
By convention, stream 0 is reserved and unused
so that converter whose stream number has
been reset to “0h” does not unintentionally
decode data not intended for them.
Lowest Channel Number (LCN): Indicates the
lowest channel used by the Output Converter.
The stereo converter will use this LCN value plus
1 for its left and right channel.
6.7.7
Converter Format
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
Bits [19:8]
Verb ID = A00h
Bits [7:0]
Parameter ID = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
S/P Tx 1 Node ID=08h
S/P Tx 2 Node ID=14h
Bits [19:8]
Verb ID = 2xxh
Bits [7:0]
Parameter ID = xxh
Response Format:
Bits [15:0] must be programmed by software 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
31:16
15
14
13:11
DS880F1
Type
Read Only
Read/Write
Read/Write
Read/Write
Default
0000h
0b
0b
000b
Description
Reserved
Stream Type (TYPE): If TYPE is non-zero, the
other bits in the format structure have other
meanings.
0: PCM
1: Non-PCM
Sample Base Rate (BASE):
0 = 48 kHz
1 = 44.1 kHz
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
73