CS4207-CNZ Datasheet, PDF (102/148 Pages) Cirrus Logic – Low-power, 4-in / 6-out HD Audio Codec with Headphone Amp

CS4207
Bits
Type
Default
Description
VREF Enable (VREFE): This field selects one of
the possible states for the VREF signal(s). The
pin associated with this function is MICBIAS.
If the value written to this control does not corre-
spond to a supported value (‘000’b, ‘001’b,
2:0
Read/Write
000b
‘010’b or ‘100’b), the VREFE bits must retain the
previous value.
‘000’b = Hi-Z
‘001’b = 0.5*VA
‘010’b = GND
‘100’b = 0.8*VA
6.11.9 Unsolicited Response Control
Get Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Line In 1 Node ID=0Ch
Mic In 1 Node ID=0Dh
Bits [19:8]
Verb ID = F08h
Bits [7:0]
Payload = 00h
Set Parameter Command Format:
Bits [31:28]
CAd = X
Bits [27:20]
Line In 1 Node ID=0Ch
Mic In 1 Node ID=0Dh
Bits [19:8]
Verb ID = 708h
Bits [7:0]
Payload = xxh
Response Format:
Bits [31:0] are sticky and will not be reset by a Link Reset or a Codec Reset:
Bits
Type
Default
Description
31:8
Read Only
000000h
Reserved
7
Read/Write
0b
Enable: Controls the actual generation of Unso-
licited Responses. 1 is enable; 0 is disable.
6
Read Only
0b
Reserved
Tag: Is a 6 bit value assigned and used by soft-
ware to determine what codec node generated
5:0
Read/Write
000000b
the unsolicited response. The value programmed
into the Tag field is returned in the top 6 bits
(31:26) of every Unsolicited Response gener-
ated by this node.
Unsolicited Response Format:
Bits [31:26]
Tag
Bits [25:0]
Response
102
DS880F4