xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 16
xrt94l33
Manufacturer Part Number
xrt94l33
Description
Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
Manufacturer
Exar Corporation
Datasheet
1.XRT94L33.pdf
(465 pages)
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XRT94L33
Rev.1.2.0.
H3
E2
TXA_ALARM/
TxAPSPAR
TXA_DP
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
I/O
O
O
CMOS
CMOS
CMOS
TTL/
Transmit STS-3/STM-1 Telecom Bus Interface – Alarm
Indicator Output signal:
This output pin pulses “high”, coincident to the instant that the
Transmit STS-3/STM-1 Telecom Bus Interface outputs an byte of
any STS-1 or STS-3c signal (via the “TXD_D[7:0]” output pins)
that is carrying an AIS-P indicator.
This output pin is “low” for all other conditions.
NOTE: This output pin is only active if the Transmit STS-3/STM-
1 Telecom Bus Interface is enabled and has been configured to
operate in the “Re-Phase OFF” Mode.
Transmit Payload APS Bus Interface – Parity Input/Output
pin:
This pin can only be configured to operate in this role/function if
the XRT94L33 has been configured to operate in the “ATM UNI”
or
“XRT94L33_Pin_Description_ATM_PPP.pdf” document for more
information.
Transmit STS-3/STM-1 Telecom Bus Interface – Parity
Output pin:
This output pin can be configured to function as either one of the
following.
The EVEN or ODD parity value of the bits which are output via
the “TXA_D[7:0]” output pins.
The EVEN or ODD parity value of the bits which are being output
via the “TXA_D[7:0]” output pins and the states of the “TXA_PL”
and “TXA_C1J1” output pins.
NOTES:
16
the
“PPP
a.
b.
over
The user can make any one of these
configuration
appropriate value into the “Telecom Bus
Control” Register (Address Location
0x0137).
This output pin is only active if the XRT94L33
has been configured to output its STS-3/STM-
1 or STS-3c data via the Transmit STS-3/STM-
1 Telecom Bus Interface block.
STS-3c”
selections
Mode.
xr
Please
by
writing
see
the
the
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