Cirrus-logic CS4207 Manual do Utilizador descarregar pdf (Página 113)

DS880F4 113

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

DigMic 1 Node ID=0Eh

DigMic 2 Node ID=12h

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.

14 Write Only xb

Set Input Amplifier (SIA): This bit determines

whether the value programmed refers to the

input amplifier. Set to 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 = not used

Bits(6:2) are not used and are ignored.

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 147 148

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