xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 84

• Manufacturer Part Number: xrt94l33
• Description: Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
• Manufacturer: Exar Corporation

XRT94L33
Rev.1.2.0.
AB12
H23
F16
STS1RXD_ALARM_1
STS1RXD_ALARM_2
RXHDLCDAT_0_0
STS1RXD_D0_0
TXDS3NEG_1/
TXDS3NEG_2/
RXGFCMSB_0
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
O
O
O
CMOS
CMOS
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)
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)
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
“STS1RXD_CK_0:.
Note:
RXHDLCDAT_0_0 (Receive HDLC block data output –
Channel 0 – Output Data Bus pin 0)
RXGFCMSB_0 (Receive GFC MSB Indicator – Channel 0)
84
data
This input pin functions as the LSB (Least Significant
Bit) of the Receive (Drop) Telecom Bus for Channel
0.
via
this
output
upon
the
xr
rising
edge
of