CS4245_07 Datasheet, PDF (41/57 Pages) Cirrus Logic – 104 dB, 24-Bit, 192 kHz Stereo Audio CODEC

6. REGISTER DESCRIPTION
CS4245
6.1 Chip ID - Register 01h
7
PART3
6
PART2
5
PART1
4
PART0
3
REV3
2
REV2
1
REV1
0
REV0
Function:
This register is Read-Only. Bits 7 through 4 are the part number ID, which is 1100b (0Ch), and the remaining
bits (3 through 0) indicate the device revision as shown in Table 4 below.
REV[2:0]
001
010
011
Revision
A
B, C0
C1
Table 4. Device Revision
6.2 Power Control - Address 02h
7
Freeze
6
Reserved
5
Reserved
4
Reserved
3
PDN_MIC
2
PDN_ADC
1
PDN_DAC
0
PDN
6.2.1 Freeze (Bit 7)
Function:
6.2.2
This function allows modifications to be made to certain control port bits without the changes taking effect
until the Freeze bit is disabled. To make multiple changes to these bits take effect simultaneously, set the
Freeze bit, make all changes, then clear the Freeze bit. The bits affected by the Freeze function are listed
in Table 5.
Name
MuteDAC
MuteADC
Gain[5:0]
Gain[5:0]
Vol[7:0]
Vol[7:0]
Register
03h
04h
07h
08h
0Ah
0Bh
Bit(s)
2
2
5:0
5:0
7:0
7:0
Table 5. Freeze-able Bits
Power-Down MIC (Bit 3)
Function:
6.2.3
The microphone preamplifier block will enter a low-power state whenever this bit is set.
Power-Down ADC (Bit 2)
Function:
The ADC pair will remain in a reset state whenever this bit is set.
DS656F2
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