參數(shù)資料
型號: AK2540
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Quad T1 Transceiver
中文描述: 的4 T1收發(fā)器
文件頁數(shù): 7/33頁
文件大?。?/td> 159K
代理商: AK2540
ASAHI K ASEI [AK2540]
MS0012-E-00 2000/1
7
PIN DESCRIPTIONS
Pin Name
I/O
Function
Comments
T1 Transceiver
TTIP1-4
TRING1-4
O
O
Transmit Tip/Ring Output pins
Bipolar output over transmit transformer
TPOS1-4
TNEG1-4
I
I
Transmit Positive/Negative Data Input pins
Input on the falling edge of TCLK
TCLK1-4
I
Transmit Clock Input pins
RTIP1-4
RRING1-4
RPOS1-4
RNEG1-4
I
I
Receive Tip/Ring Input pins
Bipolar Input over receive transformer
Receive Positive/Negative Data Output pins
Output on the rising/falling edge of RCLK
(determined by CLKE pin)
O
O
RCLK1-4
O
Receive Clock Output recovered from receive data input pins
RLOOP1-4
I
Remote Loopback Control input pins
Note1)
LLOOP1-4
I
Local Loopback Control input pins
Note1)
LENG01-04
I
Line Length Control 0 input pins
Note1)
LENG11-14
I
Line Length Control 1 input pins
Note1)
LENG21-24
I
Line Length Control 2 input pins
Note1)
AIS1-4
I
Transmit AIS Enable input pins
Note1)
AIS1SEL
I
Transmit All Ones/Zero Selection input pins when AIS is enabled
Note1)
J ASELR
I
J itter Attenuator Select input pin, placed at Receiver
Note1)
J ASELT
I
J itter Attenuator Select input pin, placed at Transmitter
Note1)
DFM1-4
LOS1-4
O
O
Driver Failure Monitor output pins
Loss of signal output pins
Output “high” when detect loss of signal
LOSx output is not masked by MLOSx register.
Positive Power Supply for the Transmit Driver
TVDD1-4
TVSS1-4
Negative Power Supply for the Transmit Driver
AVSS1-4
Common Block
Analog ground.
MCLK
I
1.544MHz or 24.704MHz External Reference Clock input pin
LOMC
O
Loss of master clock output pin.
Output “high” when detect loss of master clock
LOMC output is not masked by MLOMC register.
Note1)
AS(ALE)
INT
I
Address Select(Address Latch Enable) input pin
Interrupt Output pin(PMOS open drain), Active High,
INT output goes “high” when the alarm is reported to any one of
LOSx, LOTCx or LOMC registers. This pin can be masked by
MLOSx, MLOTCx or MLOMC registers.
Note2)
Note2)
O
DS(RD)
I
Data Strobe(Read Enable) input pin
Note2)
R/W (WR)
I
Read/Write(Write Enable) input pin
Note2)
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