T9000
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
11 GPIO Ports (continued)
11.1 GPIO Register Set (continued)
Table 94. GPAF1: GPIO Alternate Function Register #1 (0x3C)
Reg
R/W
Bit 7
Bit 6
Bit 5
Bit 4
—
Bit 3
Bit 2
Bit 1
Bit 0
GPAF1
R/W
GPAF1.7 GPAF1.6 GPAF1.5
GPAF2.3 GPAF2.2 GPAF2.1 GPRESET
RESET Default
0
0
0
0
0
0
0
0
Bit #
Symbol
Name/Description
7
GPAF1.7
GPIO1.7 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR1[DIR1.7] value. GPIO1.7 is configured as the timer 2 external
input (connects directly to P1.0 of the microcontroller module).
6
5
GPAF1.6
GPAF1.5
GPIO1.6 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR1[DIR1.6] value. GPIO1.6 is configured as the timer 1 external
input (connects directly to P3.5 of the microcontroller module).
GPIO1.5 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR1[DIR1.5] value. GPIO1.5 is configured as the timer 0 external
input (connects directly to P3.4 of the microcontroller module).
4
3
—
Reserved. Program to 0.
GPAF2.3
GPIO2.3 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR2[DIR2.3] value. GPIO2.3 is configured as the SYNCO output from
the dc/dc module.
2
1
0
GPAF2.2
GPAF2.1
GPRESET
GPIO2.2 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR2[DIR2.2] value. GPIO2.2 is configured as the FSC output from the
GCI module.
GPIO2.1 Alternate Function Selection.
0: No effect on device operation.
1: Overrides GPDIR2[DIR2.1] value. GPIO2.1 is configured as the BCLK output from
the GCI module.
GPIO Reset. Resets all the GPIO bits.
Table 95. GPD0: GPIO Port 0 Data Register (0x3D)
Reg
R/W
Bit 7
GPD0.7
0
Bit 6
GPD0.6
0
Bit 5
GPD0.5
0
Bit 4
GPD0.4
0
Bit 3
GPD0.3
0
Bit 2
GPD0.2
0
Bit 1
GPD0.1
0
Bit 0
GPD0.0
0
GPD0
R/W
RESET Default
Bit #
Symbol
Name/Description
7—0
GPD0.[7:0]
I/O Data on GPIO Port 0.
Lucent Technologies Inc.
89
AGERE [ AGERE SYSTEMS ]
