參數(shù)資料
型號: T9000
英文描述: ISDN Network Termination Node (NTN) Device
中文描述: ISDN網(wǎng)絡(luò)終端節(jié)點(diǎn)(新界北)設(shè)備
文件頁數(shù): 87/126頁
文件大小: 2127K
代理商: T9000
Lucent Technologies Inc.
87
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
T9000
11 GPIO Ports
(continued)
11.1 GPIO Register Set
(continued)
Table 91. GPDIR1: GPIO Port 1 Pin Direction (0x39)
Table 92. GPDIR2: GPIO Port 2 Pin Direction (0x3A)
Reg
GPDIR1
RESET
R/W
R/W
Default
Bit 7
DIR1.7
1
Bit 6
DIR1.6
1
Bit 5
DIR1.5
1
Bit 4
DIR1.4
1
Bit 3
DIR1.3
1
Bit 2
DIR1.2
1
Bit 1
DIR1.1
1
Bit 0
DIR1.0
1
Bit #
7—0
Symbol
DIR1.[7:0]
Name/Description
GPIO1.[7:0] Pin Direction.
0: Output.
1: Input.
Note:
When any of bits 7:5 in register GPAF1 are set, the corresponding DIR1.x value in
this register is ignored and the pin function is determined according to the GPAF1
register function.
Reg
GPDIR2
RESET
R/W
R/W
Default
Bit 7
DIR2.7
1
Bit 6
DIR2.6
1
Bit 5
DIR2.5
1
Bit 4
DIR2.4
1
Bit 3
DIR2.3
1
Bit 2
DIR2.2
1
Bit 1
DIR2.1
1
Bit 0
DIR2.0
1
Bit #
7—0
Symbol
DIR2.[7:0]
Name/Description
GPIO2.[7:0] Pin Direction.
DIR2.x defines the pin direction for GPIO2.x.
0: Output.
1: Input.
Notes:
When any of bits 3:1 in register GPAF1 are set, the corresponding DIR2.x value
in this register is ignored and the pin function is determined according to the
GPAF1 register function.
When DOCR[LT_NT] bit is set to 1 (NTN device is in LT mode), the DIR2.6 value
is ignored and pin GPIO2.6 becomes an input to the 8 kHz MTC signal.
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