2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide

API Call Reference List of APIs
Table 14:MPSC Main Structure: MPSC_MAIN_STRUCT (cont.)
Bits Field Bit
Width
17 RTSM 1 RTS* Mode
This bit may be changed on the fly.
0 - Send IDLE between frames. RTS* is
negated between frames. IDLE pattern
is defined by the protocol and TIDL bit.
1- Send flags/syncs between frames
according to the protocol. RTS* is
always asserted.
16 TIDL 1 Transmit Idles
0 - TxD is encoded during data transmission
(including preamble and
flags/sync patterns). TxD is in MARK
during idle. (Default.)
1 - TxD is encoded all the time, even
when idles are transmitted.
15:14 TSNS 2 Transmit Sense.
Defines the number of bit times the
internal sense signal will stay active
after last transition on the RXD line
occurs. It is useful for AppleTalk protocol
to avoid the spurious CD* change
interrupt that would otherwise occur
during the frame synchronization
sequence that precedes the opening
flag. The delay is a function of RCDV
(clock divider) setting.
00 (RCDV = 0) - Infinite (Carrier Sense
is always active - default)
00 (RCDV _ 0) - Infinite (Carrier Sense is
always active - default)
01 (RCDV = 0) - 14 bit times
01 (RCDV _ 0) - 6.5 bit times
10 (RCDV = 0) - 4 bit times (normal
AppleTalk)
10 (RCDV _ 0) - 2.5 bit times (normal
AppleTalk)
11 (RCDV = 0) - 3 bit times
11 (RCDV _ 0) - 1 bit time
13 reserved6 1
Description
VxWorks 5.5/Tornado 2.2 BSP Rel. 1.0 for PPMC-275 5 - 73