T9000
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
26 Register Set Summary (continued)
Table 136. Register Set Summary GPIO Registers
Reg
R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x38, GPIO Port 0 Pin Direction
GPDIR0
R/W
DIR0.7
1
DIR0.6
1
DIR0.5
1
DIR0.4
1
DIR0.3
1
DIR0.2
1
DIR0.1
1
DIR0.0
1
RESET Default
0x39, GPIO Port 1 Pin Direction
GPDIR1
R/W
DIR1.7
1
DIR1.6
1
DIR1.5
1
DIR1.4
1
DIR1.3
1
DIR1.2
1
DIR1.1
1
DIR1.0
1
RESET Default
0x3A, GPIO Port 2 Pin Direction
GPDIR2
R/W
DIR2.7
1
DIR2.6
1
DIR2.5
1
DIR2.4
1
DIR2.3
1
DIR2.2
1
DIR2.1
1
DIR2.0
1
RESET Default
0x3B, GPIO Alternate Function Register #0
GPAF0
R/W
GPAF0.7 GPAF0.6 GPAF0.5 GPAF0.4
—
0
—
0
—
0
—
0
RESET Default
0
0
0
0
0x3C, GPIO Alternate Function Register #1
GPAF1
R/W
GPAF1.7 GPAF1.6 GPAF1.5
—
0
GPAF2.3 GPAF2.2 GPAF2.1 GPRESET
RESET Default
0
0
0
0
0
0
0
0x3D, GPIO Port 0 Data Register
GPD0
R/W
GPD0.7
0
GPD0.6
0
GPD0.5
0
GPD0.4
0
GPD0.3
0
GPD0.2
0
GPD0.1
0
GPD0.0
0
RESET Default
0x3E, GPIO Port 1 Data Register
GPD1
R/W
GPD1.7
0
GPD1.6
0
GPD1.5
0
GPD1.4
0
GPD1.3
0
GPD1.2
0
GPD1.1
0
GPD1.0
0
RESET Default
0x3F, GPIO Port 2 Data Register
GPD2
R/W
GPD2.7
0
GPD2.6
0
GPD2.5
0
GPD2.4
0
GPD2.3
0
GPD2.2
0
GPD2.1
0
GPD2.0
0
RESET Default
0x40, GPIO Level-Edge-Triggered Interrupt Control
GPLEI
R/W
ILE1.3
1
ILE1.2
1
ILE1.1
1
ILE1.0
1
ILE0.3
1
ILE0.2
1
ILE0.1
1
ILE0.0
1
RESET Default
0x41, GPIO Interrupt Polarity Control
GPPOL
R/W
IPOL1.3
1
IPOL1.2
1
IPOL1.1
1
IPOL1.0
1
IPOL0.3
1
IPOL0.2
1
IPOL0.1
1
IPOL0.0
1
RESET Default
0x42, GPIO Interrupt Register
GPIR
R/W
GPI1.3
—
GPI1.2
—
GPI1.1
—
GPI1.0
—
GPI0.3
—
GPI0.2
—
GPI0.1
—
GPI0.0
—
RESET Default
0x43, GPIO Interrupt Enable
GPIE
R/W
GPIE13
—
GPIE12
—
GPIE11
—
GPIE10
—
GPIE03
—
GPIE02
—
GPIE01
—
GPIE00
—
RESET Default
124
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