
XRT94L33
xr
Rev.1.2.0.
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
60
D13
STS1TXA_D2_0
TXHDLCDAT_2_0
TXCELLTXED_0
I
TTL/CMOS
Transmit STS-1 Telecom Bus – Channel 0 – Input Data
Bus pin number 2:
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 2:
STS1TXA_D2_0
This
input
pin
along
with
“STS1TXA_D_0[7:3]”
and
“STS1TXA_D_0[1:0] 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”.
TXHDLCDAT_2_0 (Transmit HDLC block data – Channel 0
– Input data pin 2)
TXCELLTXED_0 (Cell Transmitted – Channel 0)
E13
STS1TXA_D3_0
TXHDLCDAT_3_0
SSI_CLK
I/O
TTL/CMOS
Transmit STS-1 Telecom Bus – Channel 0 – Input Data
Bus pin number 3:
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 2:
STS1TXA_D3_0:
This
input
pin
along
with
“STS1TXA_D_0[7:4]”
and
“STS1TXA_D_0[2:0] 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”.
TXHDLCDAT_3_0 (Transmit HDLC block data – Channel 0
– Input data pin 3
SSI_CLK (Slow Speed Interface for Ingress Path Clock)
A12
STS1TXA_D4_0
TXHDLCDAT_4_0
TXDS3OHIND_0
IO
TTL/CMOS
Transmit STS-1 Telecom Bus – Channel 0 – Input Data
Bus pin number 4:
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 4:
STS1TXA_D4_0:
This
input
pin
along
with
“STS1TXA_D_0[7:5]”
and
“STS1TXA_D_0[3:0] 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”.
TXHDLCDAT_4_0 (Transmit HDLC block data – Channel 0
– Input data pin 4)
TXDS3OHIND_0 (Transmit DS3 Overhead Indicator –
Channel 0)