AM79C03 datasheet(30/48 Pages) AMD

Part #	AM79C03

Description	Dual Subscriber Line Audio Processing Circuit (DSLAC) Devices

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Manufacturer	AMD [Advanced Micro Devices]

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Am79C02/03/031(A) Data Sheet

14. Read AISN, PCM Delay, and Analog Gains

(51h)

15. Write SLIC Output Register

(52h)

C1 through C5 are set to 1 or 0. The data appears latched on the C1 through C5 SLIC I/O pins,

provided they are set in the Output mode (see Command 17). The data sent to any of the pins

set to the Input mode are latched, but do not appear at the pins.

RSVD

Reserved. Always write as 0, but 0 is not guaranteed when read.

16. Read SLIC Pins

(53h)

The logic state of pins C1 through C5 is read regardless of the direction programmed into the

Input/Output register.

17. Write SLIC Input/Output Direction

(54h)

Pins C1x through C5x are set to input or output modes individually. Pins C51 and C52 are not

available on the Am79C03(A). C51 and C52 pins are output only on the Am79C031(A) and must

be programmed as outputs with this command. All unused SLIC I/O pins should be programmed

as outputs to reduce power consumption.

Data bit A sets pins C51 or C52.

Data bit B sets pins C41 or C42.

Data bit C sets pins C31 or C32.

Data bit D sets pins C21 or C22.

Data bit E sets pins C11 or C12.

Data bit = 0; Pin mode = Input.*

Data bit = 1; Pin mode = Output.

RSVD

Reserved. Always write as 0, but 0 is not guaranteed when read.

* Power up default value

D7

D6

D5

D4

D3

D2

D1

D0

Command

0

1

0

1

0

1

Output Data

PCD

AX

AR

A

B

C

D

E

D7

D6

D5

D4

D3

D2

D1

D0

Command

0

1

0

1

0

1

0

Input Data

RSVD

C5

C4

C3

C2

C1

D7

D6

D5

D4

D3

D2

D1

D0

Command

0

1

0

1

0

1

Output Data

RSVD

C5

C4

C3

C2

C1

D7

D6

D5

D4

D3

D2

D1

D0

Command

0

1

0

1

0

1

0

Input Data

RSVD

C5

C4

C3

C2

C1

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