Preliminary

Avance Logic, Inc.

ALC202

- 15 -

Rev0.62

http://www.realtek.com.tw

software doesn’t keep the same sample rates, the S/PDIF output will be auto forbidden by hardware,

and undefined consequence may be occurred.

Extension Registers:

MX76

GPIO Setup

Default: 0000h

Bit

Type

Function

15

R/W GPIO Statue Indication in SDATA_IN

0:The status of GPIO0/GPIO1/JD and its valid tag are not indicated in

SDATA_IN.

1: The status of GPIO0/GPIO1/JD and its valid tag are indicated in SDATA_IN

14:6

Reserved

6

R/W JD (Jack-Detect) interrupt Enable (when pin-47 is used as Jack-Detect)

0: Disable 1: Enable.

A low to high transaction will trigger the JD interrupt in bit0 of SDATA_IN’s

slot-12.¶

5

R/W GPIO1 interrupt Enable (when GPIO1 is used as input)

0: Disable 1: Enable.

A low to high transaction will trigger the GPIO interrupt in bit0 of SDATA_IN’s

slot-12.

4

R/W GPIO0 interrupt Enable (when GPIO0 is used as input)

0: Disable 1: Enable.

A low to high transaction will trigger the GPIO interrupt in bit0 of SDATA_IN’s

slot-12.

3:2

Reserved

1

R/W GPIO1Primitiveness Control

0: Set GPIO1 as input pin.

1: Set GPIO1 as output pin.

0

R/W GPIO0 Primitiveness Control

0: Set GPIO0 as input pin.

1: Set GPIO0 as output pin.

¶

Software programmer can enable JD interrupt to know the “Jack Detection” event occurs.

·

The Bit-Allocation of GPIO/JD status in AC-LINK:

*GPINT = (MX78.6 | MX78.5 | MX78.4)

MX78

GPIO Status

Default: 0000h

Bit

Type

Function

Frame Addr Data PCML PCMR

GPIO

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

SYNC

SDATA-IN

(Slot-0)

SDATA-IN

(Slot-12)

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

GPIO1 GPIO0 GPINT

GPINT

JD