
XRT94L33
xr
Rev.1.2.0.
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
12
PIN #
SIGNAL NAME
I/O
SIGNAL
TYPE
DESCRIPTION
M3
TXLDATO_R_N
O
LVPECL
Transmit STS-3/STM-1 Data
- Negative Polarity PECL
Output - Redundant Port:
This output pin, along with TXLDATO_R_P functions as the
Transmit
Data
Output,
to
the
Optical
Transceiver
(for
transmission to remote terminal equipment) or to the system
back-plane (for transmission to some other System board)
For “High-Speed” Back-Plane Applications, the user should note
that data is output from these output pins upon the rising/falling
edge of “TXLCLKO_R_P/TXLCLKO_R_N”).
Note:
For APS (Automatic Protection Switching) purposes,
this output pin, along with “TXLDATO_R_P” functions
as the “Redundant” Transmit STS-3/STM-1 Data
Output Port.
N6
TXLCLKO_P
O
LVPECL
Transmit STS-3/STM-1 Clock – Positive Polarity PECL
Output:
This output pin, along with TXLCLKO_N functions as the
Transmit Clock Output signal.
These output pins are typically used in “High-Speed” Back-Plane
Applications. In this case, outbound STS-3/STM-1 data is output
via the “TXLDATO_P/TXLDATO_N” output pins upon the rising
edge of this clock signal.
Note:
For APS (Automatic Protection Switching) purposes,
this output pin, along with “TXLCLKO_N” functions as
the “Primary Transmit Output Clock” signal.
N5
TXLCLKO_N
O
LVPECL
Transmit STS-3/STM-1 Clock – Negative Polarity PECL
Output:
This output pin, along with TXLCLKO_P functions as the
Transmit Clock Output signal.
These output pins are typically used in “High-Speed” Back-Plane
Applications. In this case, outbound STS-3/STM-1 data is output
via the “TXLDATO_P/TXLDATO_N” output pins upon the falling
edge of this clock signal.
Note:
For APS (Automatic Protection Switching) purposes,
this output pin, along with “TXLCLKO_N” functions as
the “Primary Transmit Output Clock” signal.
M1
TXLCLKO_R_P
O
LVPECL
Transmit STS-3/STM-1 Clock – Positive Polarity PECL
Output – Redundant Port:
This output pin, along with TXLCLKO_R_N functions as the
Transmit Clock Output signal.
These output pins are typically used in “High-Speed” Back-Plane
Applications. In this case, outbound STS-3/STM-1 data is output
via the “TXLDATO_R_P/TXLDATO_R_N” output pins upon the
rising edge of this clock signal.
Note:
For APS (Automatic Protection Switching) purposes,
this output pin, along with “TXLCLKO_R_N” functions
as the “Redundant Transmit Output Clock” signal.