PCM1602

19

SBAS163

B15

B14

B13

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

REGISTER 9

R/W

IDX6

IDX5

IDX4

IDX3

IDX2

IDX1

IDX0

RSV

RSV

FLT

CLKD

CLKE

FMT2

FMT1

FMT0

R/W

Read/Write Mode Select

When R/W = 0, a write operation is performed.

When R/W = 1, a read operation is performed.

Default Value: 0

FLT

Digital Filter Roll-Off Control

These bits are Read/Write.

Default Value: 0

FLT = 0

Sharp Roll-Off (default)

FLT = 1

Slow Roll-Off

The FLT bit allows the user to select the digital filter roll-off that is best suited to their application. Two

filter roll-off sections are available: Sharp or Slow. The filter responses for these selections are shown in

the Typical Performance Curves section of this data sheet.

CLKD

SCKO Frequency Selection

This bit is Read/Write.

Default Value: 0

CLKD = 0

CLKD = 1

The CLKD bit is used to determine the clock frequency at the system clock output pin, SCKO.

CLKE

SCKO Output Enable

This bit is Read/Write.

Default Value: 0

CLKE = 0

SCKO Enabled (default)

CLKE = 1

SCKO Disabled

The CLKE bit is used to enable or disable the system clock output pin, SCKO. When SCKO is enabled, it will

output either a full or half rate clock, based upon the setting of the CLKD bit. When SCKO is disabled, it is set

to a LOW level.

FMT[2:0]

Audio Interface Data Format

These bits are Read/Write.

FMT[2:0]

Audio Data Format Selection

000

24-Bit Standard Format, Right-Justified Data (default)

001

20-Bit Standard Format, Right-Justified Data

010

18-Bit Standard Format, Right-Justified Data

011

16-Bit Standard Format, Right-Justified Data

100

101

Left-Justified Format, 16- to 24-Bits

110

Reserved

111

Reserved

The FMT[2:0] bits are used to select the data format for the serial audio interface.