Tadpole SPARCbook 3 series, Reference Manual

Page: 139 / 216

MODEM
9-21
S Registers
4 = An MNP connection is attempted and if it fails, the
modem disconnects
5 = An MNP connection is attempted and it fails, Direct
mode connection is established
6 = Reserved
7 = An MNP connection is attempted and if it fails,
Normal mode connection is established (Default)
Bit 3 -7
Reserved
S37 Desired Line Connection Speed
Default: 0
Bit 0 - 3 Desired line connection speed. This is
interlinked with the Fn command. If an invalid number is
entered, the number is accepted into the register, but S37
will act as if the default value has been entered.
0 = Attempt auto mode connection (F0) (Default)
1-3 = Attempt to connect at 300 bps (F1)
4 = Reserved
5 = Attempt to connect at 1200 bps (F4)
6 = Attempt to connect at 2400 bps (F5)
7 = Attempt to connect at V.23 (F3)
8 = Attempt to connect at 4800 bps (F6)
9 = Attempt to connect at 9600 bps (F8)
10 = Attempt to connect at 12000 bps (F9)
11 = Attempt to connect at 14400 bps (F10).
12 = Attempt to connect at 7200 bps (F7)
Bit 4 - 7
Reserved
S38 Delay Before Forced Hang Up
This register specifies the delay between the modem’s
receipt of the H command to disconnect (or ON-to-OFF
transition of DTR if the modem is programmed to follow the
signal), and the disconnect operation. Applicable to
error-correction connection only. This register can be used to
ensure that data in the modem buffer is sent. If S38 is set to
a value between 0 and 254, the modem will wait that number
of seconds for the remote modem to acknowledge all data in
the modem buffer before disconnecting. If time expires
before all data is sent, the NO CARRIER result code will be
issued to indicate that data has been lost. If all data is
transmitted prior to time-out, the response to the H0
command will be OK.
S3GX_TRMBook Page 21 Friday, September 19, 1997 11:39 am