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參數(shù)資料
| 型號(hào)： | T9000 |
| 廠商： | Lineage Power |
| 英文描述： | ISDN Network Termination Node (NTN) Device(ISDN網(wǎng)絡(luò)終端節(jié)點(diǎn)器件) |
| 中文描述： | ISDN網(wǎng)絡(luò)終端節(jié)點(diǎn)（新界西）設(shè)備（ISDN網(wǎng)網(wǎng)絡(luò)終端節(jié)點(diǎn)器件） |
| 文件頁(yè)數(shù)： | 85/126頁(yè) |
| 文件大小： | 1523K |
| 代理商： | T9000 |
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Lucent Technologies Inc.
85
Advance Data Sheet
April 2000
ISDN Network Termination Node (NTN) Device
T9000
11 GPIO Ports
Three general-purpose input/output ports are available
on the T9000 device with each port being 8 bits wide.
For any port, each signal may be individually config-
ured as an input or as an output by proper program-
ming of registers GPDIR[0:2]. On reset, all ports are
configured as inputs.
All GPIO signals have a weak pull-up resistor of
100 k
(nominal value). Unneeded GPIO signals
should be configured as inputs, and may be left uncon-
nected. If connected on the board, it is recommended
to be tied to V
DD
to avoid power consumption.
Registers GPD[0:2] contain the value on the GPIO pin.
For GPIO pins configured as inputs, the microcontroller
accesses the port value by reading its corresponding
GPD register. For GPIO pins configured as outputs, the
microcontroller writes the desired value into its corre-
sponding GPD register.
GPIO0.[3:0] and GPIO1.[3:0] pins, when configured as
inputs (see registers GPDIR0 and GPDIR1), may also
be configured as level-activated or transition-activated
external interrupt sources for the microcontroller (see
registers GPPOL and GPLEI). Any of these eight exter-
nal interrupt sources may be masked by proper pro-
gramming of register GPIE. On module reset, all
interrupts are disabled. GPIO interrupt register (GPIR)
is cleared when read by the microcontroller.
GPIO0.[3:0] and GPIO1.[3:0] pins, when configured as
inputs, present a Schmitt trigger buffer for better noise
immunity.
GPAF0 and GPAF1 registers define alternate functional
modes for some GPIO pins.
I
GPAF0[GPAF0.(7:6)] register bits, when set, override
GPDIR0 [DIR0.(7:6)] and configure GPIO0.[7:6] as
the PWM 1 output.
I
GPAF0[GPAF0.(5:4)] register bits, when set, override
GPDIR0[DIR0.(5:4)] and configure GPIO0.[5:4] as
PWM0 outputs.
I
GPAF1[GPAF1.(7:5)] register bits, when set, override
GPDIR[DIR1.(7:5)] and configure GPIO1.[7:5] as
input trigger sources for timers 2, 1, and 0 (for proper
timer operation, the microcontroller should also con-
figure the associated SFR register bit for each timer).
I
GPAF1[GPAF2.3] register bit, when set, overrides
the GPDIR2[DIR2.3] register bit and configures
GPIO2.3 as a SYNCO output from the dc/dc module
(see Section 13, dc/dc Control Generator).
I
GPAF1[GPAF2.2] register bit, when set, overrides
the GPDIR2[DIR2.2] register bit and configures
GPIO2.2 as the reference frame sync clock (FSC)
output as specified in Section 10, GCI+ Interface
Module.
I
GPAF1[GPAF2.1] register bit, when set, overrides
the GPDIR2[DIR2.1] register bit and configures
GPIO2.1 as the GCI bit clock (BCLK) output (as
specified in Section 10, GCI+ Interface Module).
I
GPAF1[GPRESET] provides a nonlatching software
reset of the GPIO module. It has the same effect as a
global reset or a global software reset.
I
DOCR[LT_NT] register bit, when set, ignores
GPDIR2[DIR2.6] and configures GPIO2.6 as the
input for 8 kHz master transmit clock (MTC) signal.
I
When the test pin (pin 43) is asserted, GPIO1.4 and
GPIO2.7 change their functions to USSP_E and
PTLB_S, respectively, as explained in Table 4.
All registers are read/write to allow read-modify-write
operations by the microcontroller. Transition activated
interrupt sources may be individually reset by writing a
1 to the associated bits of GPPOL register.
All GPIO port signals are TTL levels. Driving capability
is 6 mA for GPIO2.0 signal and 1 mA for all others.
Figure 20 summarizes features available for all GPIO
signals.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T9001 | 功能描述:罩類、盒類及殼類產(chǎn)品 15x14x3-1/2(3.13cf) 1 Compartment RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級(jí): 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red |
| T9006 | 功能描述:罩類、盒類及殼類產(chǎn)品 15 x 14 x 3-1/2 (2.96cf) RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級(jí): 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red |
| T9007 | 功能描述:罩類、盒類及殼類產(chǎn)品 13 1/8 x 13 1/8 x 3" 6 COMPARTMENTS RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級(jí): 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red |
| T9008 | 制造商:Nortools International Ltd 功能描述:HSS METRIC DIE SET,M3-M12 |
| T900BK | 功能描述:罩類、盒類及殼類產(chǎn)品 of Box Dividers Clear RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級(jí): 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red |
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