CS4205-KQ Cirrus Logic Inc, CS4205-KQ Datasheet - Page 30

• Manufacturer Part Number: CS4205-KQ
• Description: Audio CODECs IC AC'97 Codec for Docking Stations
• Manufacturer: Cirrus Logic Inc

Specifications of CS4205-KQ

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.7
Mute
20dB
GN[4:0]
Default
30
Mute
D15
Microphone Volume Register (Index 0Eh)
D14
0
D13
0
or MIC2 input pin is controlled by the MS bit in the General Purpose Register (Index 20h).
block. In combination with the 10dB boost bit in the Misc. Crystal Control Register (Index 60h)
this bit allows for variable boost from 0 dB to +30 dB in steps of 10 dB. Table 6 summarizes
this behavior.
phone input source to the Input Mixer. Each step corresponds to 1.5 dB gain adjustment, with
01000 = 0 dB. The total range is +12 dB to -34.5 dB gain. See Table 6 for further details.
Microphone Mute. Setting this bit mutes the MIC1 or MIC2 signal. The selection of the MIC1
Microphone 20 dB Boost. When ‘set’, the 20dB bit enables the +20 dB microphone boost
Microphone Volume Control. The GN[4:0] bits are used to control the gain level of the Micro-
8008h. This value corresponds to 0 dB gain and Mute ‘set’.
D12
0
GN4 - GN0
00000
00001
01000
01001
00111
11111
…
…
D11
0
D10
Table 6. Microphone Input Gain Values
0
10dB = 0,
20dB = 0
+12.0 dB
+10.5 dB
-34.5 dB
+1.5 dB
-1.5 dB
0.0 dB
…
…
D9
0
10dB = 1,
D8
20dB = 0
+22.0 dB
+20.5 dB
+11.5 dB
+10.0 dB
0
-24.5 dB
+8.5 dB
...
...
Gain Level
D7
0
10dB = 0,
20dB
20dB = 1
+32.0 dB
+30.5 dB
+21.5 dB
+20.0 dB
+18.5 dB
-14.5 dB
D6
...
...
D5
0
10dB = 1,
20dB = 1
+42.0 dB
+40.5 dB
+31.5 dB
+30.0 dB
+28.5 dB
-4.5 dB
GN4
D4
...
...
GN3
D3
GN2
D2
CS4205
GN1
D1
DS489PP4
GN0
D0