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XRT73LC00AIV-F Datasheet, PDF (53/61 Pages) Exar Corporation – E3/DS3/STS-1 LINE INTERFACE UNIT | |||
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REV. 1.0.2
XRT73LC00A
E3/DS3/STS-1 LINE INTERFACE UNIT
When the XRT73LC00A is operating in the Hardware Mode:
Configure the device to transmit an all â1âsâ pattern by toggling the TAOS input pin (pin 2) âHighâ. Terminate the
all â1âsâ pattern by toggling the TAOS input pin âLowâ.
When the XRT73LC00A is operating in the HOST Mode:
If the XRT73LC00A is operating in the HOST Mode, the TAOS input pin is disabled. Consequently, the
XRT73LC00A can be configured to transmit an all â1âsâ pattern by writing to Command Register CR1 and
setting the TAOS bit-field (bit D3) to â1â.
COMMAND REGISTER CR1 (ADDRESS = 0X01)
D4
D3
D2
D1
D0
TXOFF TAOS TXCLKINV TXLEV TXBIN
0
1
X
X
X
The all â1âsâ pattern can be terminated by writing to Command Register CR1 and setting the TAOS bit-field
(D3) to â0".
50
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