
XRT94L33
xr
Rev.1.2.0.
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
84
H23
STS1RXD_ALARM_1
TXDS3NEG_1/
O
CMOS
STS-1 Receive (Drop) Telecom Bus – Alarm Indicator
Output signal – Channel 1:
The exact function of this output pin depends upon whether
the STS-1 Telecom Bus Interface for Channel 1 has been
enabled or not.
If STS-1 Telecom Bus (Channel 1) has been enabled –
STS-1 Receive Telecom Bus – Alarm Indicator Output signal:
This output pin pulses “high”, coincident with any STS-1 signal
(that is being output via the “STS1RXD_D_1[7:0]” output pins)
that is carrying an AIS-P indicator.
This output pin is “low” for all other conditions.
TXDS3NEG_1 (Transmit DS3/E3 line data negative to LIU –
Channel 1)
AB12
STS1RXD_ALARM_2
TXDS3NEG_2/
O
CMOS
STS-1 Receive (Drop) Telecom Bus – Alarm Indicator
Output signal – Channel 2:
The exact function of this output pin depends upon whether
the STS-1 Telecom Bus Interface for Channel 2 has been
enabled or not.
If STS-1 Telecom Bus (Channel 2) has been enabled –
STS-1 Receive Telecom Bus – Alarm Indicator Output signal:
This output pin pulses “high”, coincident with any STS-1 signal
(that is being output via the “STS1RXD_D_2[7:0]” output pins)
that is carrying an AIS-P indicator.
This output pin is “low” for all other conditions.
TXDS3NEG_2 (Transmit DS3/E3 line data negative to LIU –
Channel 2)
F16
STS1RXD_D0_0
RXHDLCDAT_0_0
RXGFCMSB_0
O
CMOS
Receive STS-1 Telecom Bus – Channel 0 – Output Data
Bus pin number 0:
The exact function of this output 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 Receive Telecom Bus – Output Data bus pin number 0:
STS1RXD_D0_0
This output pin along with “STS1RXD_D_0[7:1]” function as
the “STS-1 Receive (Drop) Telecom Bus – Output Data Bus
for Channel 0. The STS-1 Telecom Bus Interface will update
the
data
via
this
output
upon
the
rising
edge
of
“STS1RXD_CK_0:.
Note:
This input pin functions as the LSB (Least Significant
Bit) of the Receive (Drop) Telecom Bus for Channel
0.
RXHDLCDAT_0_0 (Receive HDLC block data output –
Channel 0 – Output Data Bus pin 0)
RXGFCMSB_0 (Receive GFC MSB Indicator – Channel 0)