參數(shù)資料
型號(hào)： XRT73R06
廠商： Exar Corporation
英文描述： SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述： 六通道線路接口單元E3/DS3/STS-1
文件頁(yè)數(shù)： 13/68頁(yè)
文件大?。?/td> 347K
代理商： XRT73R06
á
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73R06
REV. 1.0.0
10
C9
T8
D12
R11
C11
R9
RLOL_0
RLOL_1
RLOL_2
RLOL_3
RLOL_4
RLOL_5
O
Receive Loss of Lock - Channel 0:
Receive Loss of Lock - Channel 1:
Receive Loss of Lock - Channel 2:
Receive Loss of Lock - Channel 3:
Receive Loss of Lock - Channel 4:
Receive Loss of Lock - Channel 5:
This output pin toggles "High" if a Loss of Lock Condition is detected. LOL
(Loss of Lock) condition occurs if the recovered clock frequency deviates from
the Reference Clock frequency (available at either E3CLK or DS3CLK or STS-
1CLK input pins) by more than 0.5%.
L16
RXA
****
External Resistor of 3.01K
± 1%.
Should be connected between RxA and RxB for internal bias.
K16
RXB
****
External Resistor of 3.01K
±1%.
Should be connected between RxA and RxB for internal bias.
P12
ICT
I
In-Circuit Test Input
:
Setting this pin "Low" causes all digital and analog outputs to go into a high-
impedance state to allow for in-circuit testing. For normal operation, tie this pin
"High".
N
OTE
:
This pin is internally pulled up.
R12
TEST
****
Factory Test Pin
N
OTE
:
This pin must be connected to GND for normal operation.
MICROPROCESSOR INTERFACE
L
EAD
#
S
IGNAL
N
AME
T
YPE
D
ESCRIPTION
K3
CS
I
Chip Select
Tie this “Low” to enable the communication with the Microprocessor Interface.
R1
PCLK
I
Processor Clock Input
To operate the Microprocessor Interface, appropriate clock frequency is pro-
vided through this pin. Maximum frequency is 66 Mhz.
K2
WR
I
Write Data :
To write data into the registers, this active low signal is asserted.
L2
RD
I
Read Data:
To read data from the registers, this active low pin is asserted.
J3
RESET
I
Register Reset:
Setting this input pin "Low" resets the contents of the Command Registers to
their default settings and default operating configuration
N
OTE
:
This pin is internally pulled up.
L3
PMODE
I
Processor Mode Select:
When this pin is tied “High”, the microprocessor is operating in synchronous
mode which means that clock must be applied to the PCLK (pin 55).
Tie this pin “Low” to select the Asynchronous mode. An internal clock is pro-
vided for the microprocessor interface.
CONTROL AND ALARM INTERFACE
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