CS5345

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6.

REGISTER DESCRIPTION

6.1

Chip ID - Register 01h

Function:

This register is Read-Only. Bits 7 through 4 are the part number ID which is 1110b (0Eh) and the re-

maining bits (3 through 0) are for the chip revision.

6.2

Power Control - Address 02h

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 simulta-

neously, set the Freeze bit, make all changes, then clear the Freeze bit. The bits affected by the

Freeze function are listed in Table 4 below.

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.

6.2.4

Power Down Device (Bit 0)

Function:

The device will enter a low-power state whenever this bit is set. The power-down bit is set by default

and must be cleared before normal operation can occur. The contents of the control registers are re-

tained when the device is in power-down.

6.3

ADC Control - Address 04h

B7

B6

B5

B4

B3

B2

B1

B0

PART3

PART2

PART1

PART0

REV3

REV2

REV1

REV0

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210

Freeze

Reserved

Reserved

Reserved

PDN_MIC

PDN_ADC

Reserved

PDN

Table 4. Freeze-able Bits

Name

Register

Bit(s)

Mute

04h

2

Gain[5:0]

07h

5:0

Gain[5:0]

08h

5:0

76543

210

FM1

FM0

Reserved

DIF

Reserved

Mute

HPFFreeze

M/S