XRT94L31IB-L Exar Corporation, XRT94L31IB-L Datasheet - Page 47

• 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

REV. 1.0.1
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
A12
TXDS3OHIND_0(Con
TXHDLCDAT_0_4
STS1TXA_0_D4
SIGNAL NAME
tinued)
I/O
I/O
TTL/
CMOS
TYPE
Transmit STS-1 Telecom Bus - Channel 0 - Input Data Bus pin num-
ber 4/Transmit High-Speed HDLC Controller Input Interface block -
Input Data Bus - Pin 4/Transmit DS3/E3 Overhead Indicator Output -
Channel 0 - Continued:
If the STS-1 Telecom Bus Interface (associated with Channel 0) has
been disabled - Continued:If the XRT94L31 is configured to operate
in the Clear-Channel DS3/E3 Framer over STS-3/STM-1 Mapper
Mode - Transmit DS3 Overhead Indicator - Channel 0 -
TxDS3OHInd_0 - Continued:
Therefore, whenever the System-Side terminal equipment samples the
TxDS3OHInd_0 output pin "High", then it must not apply the next pay-
load bit to TxDS3DATA_0 input pin.This output pin serves as a warning
that this particular payload bit is going to be ignored by the Transmit Sec-
tion of the Framer, and will not be inserted into payload bits, within the
outbound DS3 or E3 data stream.
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
47
DESCRIPTION
XRT94L31