STAC9766 IDT [Integrated Device Technology], STAC9766 Datasheet - Page 66

• Manufacturer Part Number: STAC9766
• Manufacturer: IDT [Integrated Device Technology]

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
8.2.4.
8.2.5.
8.2.6.
Bit(s)
15:2
Bit(s)
Bit(s)
15:9
15:2
1
0
7:1
8
0
1
0
D15
D15
D15
D7
D7
D7
Extended Modem Status and Control Register (3Eh)
Default: 0100h
GPIO Pin Configuration Register (4Ch)
Default: 0003h
GPIO Pin Polarity/Type Register (4Eh)
Default: FFFFh
Read / Write
Read / Write
Read Only
Access
Read / Write
Read / Write
Read / Write
Read Only
Read Only
Read Only
Read Only
Access
Access
D14
D14
D14
D6
D6
D6
Reset Value
Reset Value
Reset Value
0
1
1
0
1
0
0
0
1
1
D13
D13
D13
D5
D5
D5
RESERVED Bit not used, should read back 0
RESERVED
RESERVED
Name
GP1
GP0
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Name
Name
GPIO
PRA
GC1
GC0
D12
D12
D12
66
D4
D4
D4
0 = GPIO1 Input Polarity Inverted, CMOS output drive.
1 = GPIO1 Input Polarity Non-inverted, Open-Drain output drive.
0 = GPIO0 Input Polarity Inverted, CMOS output drive.
1 = GPIO0 Input Polarity Non-inverted, Open-Drain output drive.
RESERVED
RESERVED
Bit not used, should read back 0
0 = GPIO powered up / enabled
1 = GPIO powered down / disabled
Bit not used, should read back 0
0 = GPIO not ready (powered down)
1 = GPIO ready (powered up)
Bit not used, should read back 0
0 = GPIO1 configured as output
1 = GPIO1 configured as input
0 = GPIO0 configured as output
1 = GPIO0 configured as input
D11
D11
D11
D3
D3
D3
STAC9766/9767
Description
D10
D10
D10
D2
D2
D2
Description
Description
(GPIO1)
(GPIO1)
GC1
GP1
D9
D1
D9
D1
D9
D1
PC AUDIO
(GPIO0)
(GPIO0)
GPIO
PRA
GC0
V 7.4 12/06
GP0
D8
D0
D8
D0
D8
D0