XRT4500 Datasheet, PDF (45/99 Pages) Exar Corporation – MULTIPROTOCOL SERIAL NETWORK INTERFACE IC

XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
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1.2.3 The “Diagnostic Operation Indicator
Transceiver” Block
The “Diagnostic Operation Indicator Transceiver”
block contains transceiver TR7, which is composed of
TX7 and RX7, receiver RX8 and transmitter TX8.
These devices may be configured to support the
“Electrical Interface” requirements, per ITU-T V.10
(EIA-423) or ITU-T V.28 (EIA-232). These devices
were specifically designed to support the Local Lock
(LL), Remote Loopback (RL) and RI (or TM) signals.
FIGURE 14. DIAGNOSTIC OPERATION INDICATOR TRANSCEIVER BLOCK
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