xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 21

• Manufacturer Part Number: xrt94l33
• Description: Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
• Manufacturer: Exar Corporation

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3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
AD2
AC3
AA4
AB4
AD3
AA5
Y2
Y1
RxAPSDat0
RxAPSDat1
RxAPSDat2
RxAPSDat3
RxAPSDat4
RxAPSDat5
RxAPSDat6
RxAPSDat7
RxHRDat0/
RxHRDat1/
RxHRDat2/
RxHRDat3/
RxHRDat4/
RxHRDat5/
RxHRDat6/
RxHRDat7/
RxD_D0/
RxD_D1
RxD_D2
RxD_D3
RxD_D4
RxD_D5
RxD_D6
RxD_D7
I/O
I
I
CMOS
TTL/
TTL
TTL
Receive STS-3/STM-1 Telecom Bus Interface – Receive Input
Data Bus pins - RxD_D[7:0]:
These 8 input pins function as the Receive STS-3/STM-1
Telecom Bus Interface - Input data bus.
3/STM-1 data is sampled and latched (into the XRT94L33, via
these input pins) upon the falling edge of the “RXD_CLK” input
clock signal.
RxHRDat[7:0]: Receive data inputs for high-rate device
Receive Payload APS Bus Interface – Data Bus Input/Output
Pins:
These pins can only be configured to function in this role if the
XRT94L33 has been configured to operate in the “ATM UNI” or
“PPP over STS-3c” Mode. These pins cannot be configured to
support “Payload APS” operation if the XRT94L33 has been
configured to operate in an “Aggregation” role.
21
All incoming STS-
XRT94L33
Rev.1.2.0.