參數(shù)資料
型號: 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)
文件頁數(shù): 14/126頁
文件大小: 1523K
代理商: T9000
14
Lucent Technologies Inc.
Advance Data Sheet
April 2000
ISDN Network Termination Node (NTN) Device
T9000
4 Pin Information
(continued)
Table 8. Miscellaneous Pins (2)
* I = input, O = output, I
d
= input with an internal 50 k
pull-down.
Table 9. Oscillator Pins (2)
* I = input, O = output.
Table 10. Power and Ground Pins
Pin Name
RESET
Pin #
31
Type*
I
d
Pin Description
Reset Input (Active-High).
This signal resets the entire device. During RESET,
the U transmitter produces 0 V. This puts the U-interface in the QUIET mainte-
nance mode as described in ANSIT1.601 Section 6.5. RESET should be
asserted whenever return loss and longitudinal balance measurements are being
made on the U-interface. Internal 50 k
pull-down.
Test Input (Active-High).
During normal operation, this signal should be main-
tained high. Internal 50 k
pull-down. Please see Section 15, Test Mode for more
details.
TEST
43
I
d
Pin Name
XTAL1
Pin #
37
Type*
I
Pin Description
Crystal In
. 15.36 MHz oscillator input. When using an external crystal, one of the
crystal pins is connected to this pin. This pin may also be driven by an external
oscillator with CMOS output levels.
Crystal Out
. 15.36 MHz oscillator output. When using an external crystal, one of
the crystal pins is connected to this pin. When using an external oscillator, this
pin is left unconnected.
XTAL0
38
O
Pin Name
V
DDD
GND
D
Pin #
Type
Pin Description
3, 22, 39, 80
12, 25, 36, 44, 69,
89, 98
53, 57, 67
52, 59, 66
Digital Power
. 5 V
±
5% power supply pins for digital circuitry.
Digital Ground
. Ground leads for digital circuitry.
V
DDA
GND
A
Analog Power
. 5 V
±
5% power supply lead for the analog circuitry.
Analog Ground
. Ground leads for analog circuitry.
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