Register Description; Chip Id - Register 01H; Power Control - Address 02H; Freeze (Bit 7) - Cirrus Logic CS4265 Manual

6. REGISTER DESCRIPTION

6.1

Chip ID - Register 01h

7 6
PART3 PART2
Function:
This register is Read-Only. Bits 7 through 4 are the part number ID, which is 1101b (0Dh), and the remaining
bits (3 through 0) indicate the device revision as shown in
6.2

Power Control - Address 02h

7 6
Freeze Reserved
6.2.1

Freeze (Bit 7)

Function:
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 6.
6.2.2

Power-Down MIC (Bit 3)

Function:
The microphone preamplifier block will enter a low-power state whenever this bit is set.
6.2.3

Power-Down ADC (Bit 2)

Function:
The ADC pair will remain in a reset state whenever this bit is set.
36
5 4
PART1 PART0
REV[2:0]
001
010
011

Table 5. Device Revision

5 4
Reserved Reserved
Name
MuteDAC
MuteADC
Gain[5:0]
Gain[5:0]
Vol[7:0]
Vol[7:0]
TxMute

Table 6. Freeze-able Bits

3 2
REV3 REV2
Table 5 below.
Revision
A
B, C0
C1
3 2
PDN_MIC PDN_ADC
Register Bit(s)
03h
04h
07h 5:0
08h 5:0
0Ah 7:0
0Bh 7:0
0Eh
CS4265
1
REV1
1
PDN_DAC
2
2
4
0
REV0
0
PDN
DS657F3