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參數(shù)資料
| 型號： | MB583A |
| 廠商： | Fujitsu Limited |
| 英文描述： | 155-Mbps ATM Transceiver(155Mbps 異步傳輸模式 收發(fā)器) |
| 中文描述： | 155 - Mbps的自動柜員機收發(fā)器（155Mbps異步傳輸模式收發(fā)器） |
| 文件頁數(shù)： | 10/46頁 |
| 文件大?。?/td> | 345K |
| 代理商： | MB583A |
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10
MB582A/583A
(Continued)
(Continued)
Pin no.
Symbol
Pin name
I/O interface
(speed)
Function
29
LOSO
Loss output
TTL output
<L or H>
Asynchronous Loss output pin:
the High-level signal after serial data input of “0” or
“1” remains unchanged or on reception of a loss
signal.
Note that, whenever the serial data input is variable
in level without being fixed as “1” or “0,” the device
will assume that data is being received (the optical
module connected to the serial data input may
output variable level when the optical signal
interrupted).
This output pin can be connected to the controller
(MB86683 NTC).
This pin outputs
25
RX-READY Ready output
TTL output
<L or H>
Asynchronous READY output pin:
indicates whether the MB583A is ready. The pin
outputs the High-level signal when the device is in
the ready state.
The pin does not indicate the ready state when;
serial data input of “0” or “1” remains unchanged, on
reception of a loss signal, RESET = “0,” or the PLL
circuit in the clock recovery unit is not locked.
This pin
40
V
BB
Reference
voltage output
—
Reference voltage output pin:
serial data, connect the VBB and D pins using a
resistor. For differential input of serial data, leave
this pin open.
For single input of
5
TIMER
Timer
Timer pin:
power-on reset by connecting a 4.7
between this pin and the GND pin. Be sure to leave
this pin open when not in use. The device must be
reset when the power is turned on. The power-on
reset can take place automatically only by
connecting the capacitor to this pin. For details, see
“POWER-ON RESET, P17.”
This pin can be used for automatic
μ
F capacitor
32
31
FIL1
FIL2
External
capacitor
External capacitor connection pins:
capacitor is connected between these pins.
This capacitor is the filter capacitor for the clock
recovery.
A 1 nF
3, 4, 7
NC
Unused pin
Leave these pins open.
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