0049-0117-100 DSP9612 Flash Poll Modem – User Guide
10/12/2011
Rev. F1
Page 23 of 44
SW3-2
−
Data Rate (Fast-Poll Mode Only)
SW3-
2
ON = 4800 bps
OFF = 9600 bps
SW3-2 configures the modem speed. When the modem is in high-speed
fast-poll mode (SW3-1 OFF), setting SW3-2 ON selects 4800 bps, while
setting SW3-2 OFF selects 9600 bps.
SW3-3
−
Async Character (Fast-Poll Mode Only)
Switch SW3-3 selects whether the async character is 10 or 11 bits long.
When the modem is in high-speed fast-poll mode (SW3-1 OFF), setting
SW3-3 ON selects an 11-bit async character while setting SW3-3 OFF
selects a 10-bit async character.
SW3-4
−
Auto RTS (Fast-Poll Mode Only)
For data terminals that do not support hardware RTS, set SW3-4 to ON to
enable auto RTS mode. In this mode, TXD is detected at the modem and
an internal RTS signal is turned ON. After training completes, the TXD is
transmitted to the remote modem. The transmitter turns off if no TXD is
detected after 1 character length of idle time. Auto RTS is used in fast-poll
mode only (SW3-1 set to OFF).
SW3-
3
ON = 11 bits
OFF = 10 bits
SW3-
4
ON = Enable Auto RTS
OFF = Disable Auto RTS
Summary of Contents for DSP9612
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