PCM1741

14

SBAS175

Register 20 (Cont.)

FLT

Digital Filter Roll-Off Control

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.

B15

B14

B13

B12

B11

B10

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

REGISTER 22

0

IDX6

IDX5

IDX4

IDX3

IDX2

IDX1

IDX0

RSV

RSV

RSV

RSV

RSV

AZRO

ZREV

DREV

DREV

Output Phase Select

Default Value: 0

DREV = 0

Normal Output (default)

DREV = 1

Inverted Output

The DREV bit is used to set the output phase of VOUTL and VOUTR.

ZREV

Zero Flag Polarity Select

Default Value: 0

ZREV = 0

Zero Flag Pins HIGH at a Zero Detect (default)

ZREV = 1

Zero Flag Pins LOW at a Zero Detect

The ZREV bit allows the user to select the active polarity of Zero Flag pins.

AZRO

Zero Flag Function Select

Default Value: 0

AZRO = 0

L-/R-Channel Independent Zero Flag (default)

AZRO = 1

L-/R-Channel Common Zero Flag

Register22 (Cont.)

The AZRO bit allows the user to select the function of Zero Flag pins.

AZRO = 0:

Pin11: ZEROR; Zero Flag Output for R-Channel

Pin12: ZEROL; Zero Flag Output for L-Channel

AZRO = 1:

Pin11: ZEROA; Zero Flag Output for L-/R-Channel

Pin12: NA; No Assign