RC96V24DP
1.0 Functional Description
Single Device Data/Modem Data Pump
1.2 Technical Specifications
D96V24DSA
1-5
1.2.4.9 RTS-CTS Turn-
On and Turn-Off
Sequences
RTS ON to CTS ON and RTS OFF to CTS OFF response times are listed in
Table 1-3.
In V.21, the transmitter turns off within 10 ms after RTS goes OFF.
For V.29, the turn-off sequence consists of approximately 5 ms of remaining
data and scrambled ones followed by a 50 ms period of no transmitted energy.
For V.27 ter, the turn-off sequence consists of approximately 7 ms of
remaining data and scrambled ones at 1200 baud or approximately 7.5 ms of data
and scrambled ones at 1600 baud followed by a 20 ms period of no transmitted
energy.
1.2.5 Serial or Parallel Interface
The TPDM bit selects serial or parallel interface.
Serial Interface.
The five hardware lines (RXD, TXD, TDCLK, RDCLK, and
XTCLK) are supported by four control and status bits in the interface memory
(CTS, DSR, RTS, and RLSD).
Parallel Interface.
A 8086-compatible parallel microprocessor bus is supported.
Table 1-2. Dial Digits/Tone Pairs
Dial Digit
Tone 1 (Hz)
Tone 2 (Hz)
1
697
1209
2
697
1336
3
697
1447
4
770
1209
5
770
1336
6
770
1447
7
852
1209
8
852
1336
9
852
1477
0
941
1336
*
941
1209
#
941
1477
Spare B
967
1633
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