34

DS624F4

CS5368

5.6

04h (HPF) High-Pass Filter Register

Default: 0x00, all high-pass filters enabled.

The High-Pass Filter Register is used to enable or disable a high-pass filter that exists for each channel.

These filters are used to perform DC offset calibration, a procedure that is detailed in “DC Offset Control”

on page 29.

5.7

05h Reserved

5.8

06h (PDN) Power Down Register

Default: 0x00 - everything powered up

The Power Down Register is used as needed to reduce the chip’s power consumption.

Bit[7] RESERVED

Bit[6] RESERVED

Bit[5] PDN-BG When set, this bit powers-down the bandgap reference.

Bit[4] PDN-OSC controls power to the internal oscillator core. When asserted, the internal oscillator core is

shut down, and no clock is supplied to the chip. If the chip is running off an externally supplied clock at the

MCLK pin, it is also prevented from clocking the device internally.

Bit[3:0] PDN When any bit is set, all clocks going to a channel pair are turned off, and the serial data outputs

are forced to all zeroes.

5.9

07h Reserved

5.10

08h (MUTE) Mute Control Register

Default: 0x00, no channels are muted.

The Mute Control Register is used to mute or unmute the serial audio data output of individual channels.

When a bit is set, that channel’s serial data is muted by forcing the output to all zeroes.

R/W

765

43

210

R/W

HPF8

HPF7

HPF6

HPF5

HPF4

HPF3

HPF2

HPF1

R/W

765

43

210

RESERVED

-

-

-

-

-

-

-

-

R/W

765

43

210

R/W

RESERVED

PDN-BG

PDN-OSC

PDN87

PDN65

PDN43

PDN21

R/W

765

43

210

RESERVED

-

-

-

-

-

-

-

-

R/W

765

43

210

R/W

MUTE8

MUTE7

MUTE6

MUTE5

MUTE4

MUTE3

MUTE2

MUTE1