Cirrus Logic CS4207 - Manual (Page 107)

DS880F4 107
CS4207
Response Format:
Set Parameter Command Format:
Bits [19:16] = ‘3h’, where bits [15:0] are defined below:
Bits Type Default Description
31:8 Read Only 000000h Reserved
7 Read Only 0b
Amplifier Mute (AM): Mute is not supported by
this widget.
6:0 Read Only 0000000b
Amplifier Gain (AG): This field returns the Gain
setting for the amplifier requested. If the amplifier
requested does not exist, all ‘0’s will be returned.
Default equals 0 dB.
Bits [31:28] Bits [27:20] Bits [19:16] Bits [15:0]
CAd = X Line In 1 Node ID=0Ch
Mic In 1 Node ID=0Dh
Verb ID = 3h Payload = xxxxh
Bits Type Default Description
15 Write Only 0b
Set Output Amplifier (SOA): This bit deter-
mines whether the value programmed refers to
the output amplifier. This bit should always be ‘0’
since an output amplifier is not present on this
widget.
14 Write Only xb
Set Input Amplifier (SIA): This bit determines
whether the value programmed refers to the
input amplifier. Set to a 1 for the value to be
accepted.
13 Write Only xb
Set Left Amplifier (SLA): Selects the left chan-
nel (channel 0). A 1 indicates that the relevant
amplifier should accept the value being set. If
both bits are set, both amplifiers are set.
12 Write Only xb
Set Right Amplifier (SRA): Selects the right
channel (channel 1). A 1 indicates that the rele-
vant amplifier should accept the value being set.
If both bits are set, both amplifiers are set.
11:8 Write Only 0000b
Index (IDX): This field is used when program-
ming the input amplifiers on Selector Widgets
and Sum Widgets. This field is ignored.
7 Write Only 0b
Mute (MUTE): When ‘0’, the Mute is inactive.
This field is ignored.
6:0 Write Only xxxxxxxb
Gain (GAIN): Specifies the amplifier gain in dB.
xxxxx00b = 0 dB
xxxxx01b = +10 dB
xxxxx10b = +20 dB
xxxxx11b = +30 dB
Bits(6:2) are not used and are ignored.