xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 62
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.
A10
B23
TXHDLCDAT_7_0
TXHDLCDAT_0_1
TXSBDATA_7_0
STS1TXA_D7_0
STS1TXA_D0_1
TXGFCMSB_1
TXAISEN_0
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
I/O
I
TTL/CMOS
TTL
Transmit STS-1 Telecom Bus – Channel 0 – Input Data Bus
pin number 7:
The exact function of this pin depends upon whether the STS-
1 Telecom Bus Interface, associated with Channel 0 is
enabled or not.
If STS-1 Telecom Bus (Channel 0) has been enabled – STS-1
Transmit Telecom Bus – Input Data Bus pin number 7:
STS1TXA_D7_0:
This input pin along with “STS1TXA_D_0[6:0]” function as the
“STS-1 Transmit (Add) Telecom Bus – Input Data Bus for
Channel 0. The STS-1 Telecom Bus interface will sample and
latch this pin upon the falling edge of “STS1TXA_CK_0”.
Note:
If STS-1 Telecom Bus (Channel 0) is disabled –
TXHDLCDAT_7_0 (Transmit HDLC block data – Channel 0
– Input data pin 7)
TXAISEN_0 (Transmit AIS Enable – Channel 0)
Transmit STS-1 Telecom Bus – Channel 1 – Input Data
Bus pin number 0:
The exact function of this pin depends upon whether the STS-
1 Telecom Bus Interface, associated with Channel 1 is
enabled or not.
If STS-1 Telecom Bus (Channel 1) has been enabled –
STS-1 Transmit Telecom Bus – Input Data Bus pin number 0:
This input pin along with “STS1TXA_D_1[7:1]” function as the
“STS-1 Transmit (Add) Telecom Bus – Input Data Bus for
Channel 1.
(Least Significant Bit) input pin on the Transmit (Add) Telecom
Bus – Input Data Bus. The STS-1 Telecom Bus interface will
sample and latch this pin upon the falling edge of
“STS1TXA_CK_1”.
The LSB of any byte, which is being input into the “STS-1
Transmit Telecom Bus – Data Bus (for Channel 1) should be
input via this pin.
TXHDLCDAT_0_1 (Transmit HDLC block data – Channel 1
– Input data pin 0)
TXGFCMSB_1 (Transmit GFC MSB Indicator – Channel 1)
62
Significant Bit) of the Transmit (Add) Telecom Bus,
for Channel 0.
This input pin functions as the MSB (Most
This particular input pin functions as the LSB
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