TLV320AD12A

3.3-V INTEGRATED ADSL CODEC

SLWS088B – JULY 1999 – REVISED MARCH 2000

9

POST OFFICE BOX 655303

programming (continued)

SCR2 – RX PGA2 control register

Address:0010b

contents at reset: 00000000b

D7

D6

D5

D4

D3

D2

D1

D0

REGISTER

VALUE (HEX)

DESCRIPTION

0

0

0

0

0

0

0

0

00

RX PGA2 = 0 dB

0

0

0

0

0

0

0

1

01

RX PGA2 = 1 dB

0

0

0

0

0

0

1

0

02

RX PGA2 = 2 dB

0

0

0

0

0

0

1

1

03

RX PGA2 = 3 dB

0

0

0

0

0

1

0

0

04

RX PGA2 = 4 dB

0

0

0

0

0

1

0

1

05

RX PGA2 = 5 dB

0

0

0

0

0

1

1

0

06

RX PGA2 = 6 dB

0

0

0

0

0

1

1

1

07

RX PGA2 = 7 dB

0

0

0

0

1

0

0

0

08

RX PGA2 = 8 dB

0

0

0

0

1

0

0

1

09

RX PGA2 = 9 dB

–

–

–

–

–

–

–

–

0A–FF

Reserved (see Note 3)

NOTE 3: The performance of the codec for invalid combination of bits is not guaranteed and such combinations should not be used. The user

should make no assumption that the code bits will saturate to a maximum or minimum value or wrap around to a valid combination.

SCR3 – RX PGA1 control register

Address:0011b

contents at reset: 00000000b

D7

D6

D5

D4

D3

D2

D1

D0

REGISTER

VALUE (HEX)

DESCRIPTION

0

0

0

0

0

0

0

0

00

RX PGA1 = 0 dB

0

0

0

0

0

0

0

1

01

RX PGA1 = 1 dB

0

0

0

0

0

0

1

0

02

RX PGA1 = 2 dB

0

0

0

0

0

0

1

1

03

RX PGA1 = 3 dB

0

0

0

0

0

1

0

0

04

RX PGA1 = 4 dB

0

0

0

0

0

1

0

1

05

RX PGA1 = 5 dB

0

0

0

0

0

1

1

0

06

RX PGA1 = 6 dB

–

–

–

–

–

–

–

–

06 – FF

Reserved (see Note 3)

NOTE 3: The performance of the codec for invalid combination of bits is not guaranteed and such combinations should not be used. The user

should make no assumption that the code bits will saturate to a maximum or minimum value or wrap around to a valid combination.

SCR6 – general-purpose output data register

Address:0110b

contents at reset: 00000000b

D7

D6

D5

D4

D3

D2

D1

D0

REGISTER

VALUE (HEX)

DESCRIPTION

0/1

–

–

–

–

–

–

–

GP7 = low(0)/high(1)

–

0/1

–

–

–

–

–

–

GP6 = low(0)/high(1)

–

–

0/1

–

–

–

–

–

GP5 = low(0)/high(1)

–

–

–

0/1

–

–

–

–

GP4 = low(0)/high(1)

–

–

–

–

0/1

–

–

–

GP3 = low(0)/high(1)

–

–

–

–

–

0/1

–

–

GP2 = low(0)/high(1)

–

–

–

–

–

–

0/1

–

GP1 = low(0)/high(1)

–

–

–

–

–

–

–

0/1

GP0 = low(0)/high(1)