XRT94L31IB-L Exar Corporation, XRT94L31IB-L Datasheet - Page 74

• Manufacturer Part Number: XRT94L31IB-L
• Description: IC MAPPER DS3/E3/STS-1 504TBGA
• Manufacturer: Exar Corporation

Specifications of XRT94L31IB-L

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 3.14 V ~ 3.47 V
• Package / Case: 504-LBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT94L31
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
AB12
H23
A19
F16
E16
STS1RXD_ALARM_0
STS1RXD_ALARM_1
STS1RXD_ALARM_2
RXHDLCDAT_0_0
RXHDLCDAT_1_0
STS1RXD_D0_0
STS1RXD_D1_0
SIGNAL NAME
TXDS3NEG_1/
RXGFCMSB_0
TXDS3NEG_0
TXDS3NEG_2
RXGFC_0
I/O
O
O
O
CMOS
CMOS
CMOS
TYPE
STS-1 Receive (Drop) Telecom Bus - Alarm Indicator Output signal -
Channel n:
The function of this output pin depends upon whether or not the STS-1
Telecom Bus Interface for Channel n has been enabled.
If STS-1 Telecom Bus (Channel n) 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_n[7:0] output pins) that is carrying an
AIS-P indicator.
This output pin is "Low" for all other conditions.
TXDS3NEG_n (Transmit DS3/E3 line data negative to LIU - Channel
n)
Receive STS-1 Telecom Bus - Channel 0 - Output Data Bus pin num-
ber 0:
The function of this output pin depends upon whether or not the STS-1
Telecom Bus Interface, associated with Channel 0 is enabled.
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:.
N
RXHDLCDAT_0_0 (Receive HDLC block data output - Channel 0 -
Output Data Bus pin 0)
RXGFCMSB_0 (Receive GFC MSB Indicator - Channel 0)
Receive STS-1 Telecom Bus - Channel 0 - Output Data Bus pin num-
ber 1:
The function of this output pin depends upon whether or not the STS-1
Telecom Bus Interface, associated with Channel 0 is enabled.
If STS-1 Telecom Bus (Channel 0) has been enabled - STS-1
Receive Telecom Bus
- Output Data bus pin number 1: STS1RXD_D1_0
This output pin along with STS1RXD_D_0[7:2] and STS1RXD_D0_0
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.
RXHDLCDAT_1_0 (Receive HDLC block data output - Channel 0 -
Output Data Bus pin 1):
RXGFC_0 (Receive GFC output data - Channel 0)
OTE
: This input pin functions as the LSB (Least Significant Bit) of the
Receive (Drop) Telecom Bus for Channel 0.
74
DESCRIPTION
REV. 1.0.1