STAC9752 Datasheet, PDF (66/95 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
8.2.5.
GPIO Pin Configuration Register (4Ch)
Default: 0003h
D15
D14
D7
D6
D13
D12
D11
RESERVED
D5
D4
D3
RESERVED
D10
D9
D2
D1
GC1
(GPIO1)
Bit(s)
15:2
1
Access Reset Value
Read Only
0
Read / Write
1
0
Read / Write
1
Name
RESERVED
GC1
GC0
Description
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
D8
D0
GC0
(GPIO0)
8.2.6.
GPIO Pin Polarity/Type Register (4Eh)
Default: FFFFh
D15
D14
D7
D6
D13
D12
D11
RESERVED
D5
D4
D3
RESERVED
D10
D9
D8
D2
D1
D0
GP1
(GPIO1)
GP0
(GPIO0)
Bit(s)
15:2
1
0
Access
Read Only
Read / Write
Read / Write
Reset Value
0
1
1
Name
RESERVED
GP1
GP0
Description
Bit not used, should read back 0
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.
8.2.7.
GPIO Pin Sticky Register (50h)
Default: 0000h
D15
D14
D7
D6
D13
D12
D11
RESERVED
D5
D4
D3
RESERVED
D10
D9
D2
D1
GS1
(GPIO1)
Bit(s)
15:2
1
0
Access
Read Only
Read / Write
Read / Write
Reset Value
0
0
0
Name
RESERVED
GS1
GS0
Description
Bit not used, should read back 0
0 = GPIO1 Non Sticky configuration.
1 = GPIO1 Sticky configuration.
0 = GPIO0 Non Sticky configuration.
1 = GPIO0 Sticky configuration.
D8
D0
GS0
(GPIO0)
IDT™
66
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
REV 3.3 1206