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
16 RINV 1 Receive Bit Stream Inversion.
0 - No invert.
1 - Inverts the data before it is sent from
the DPLL to the MPSC data path. Setting
RINV to ‘1’ decodes FM1 and NRZI
mark when the RENC field is programed
to FM0 and NRZI space etc. It
also inverts the received bit stream in
NRZ mode.
15:14 reserved2 2
Description
13:11 TDEC 3 Transmit Encoder
Specifies the encoding method for the
dedicated Tx channel DPLL.
000 - NRZ (default)
001 - NRZI (mark, can be set to Space by
setting TINV bit)
010 - FM0 (can be set to FM1 by setting
the TINV bit)
011 - Reserved
100 - Manchester
101 - Reserved
110 - Differential Manchester
111 - Reserved
10:9 TCDV 2 Transmit Clock Divider
Defines the transmit clock divider. The
transmit bit rate is the rate of the clock
entering the MPSC Tx machine (from
external pin or a BRG) divided by the
TCDV field. For FM0, FM1, Manchester,
and Differential Manchester, one of the
8x, 16x, or 32x options must be set.
00 - 1x clock mode (Default. For NRZ
and NRZI only.)
01 - 8x clock mode
10 - 16x clock mode
11 - 32x clock mode
8:5 TPPT 4 TPPT 4 Transmit Preamble Pattern
Defines a character sent as a preamble
sequence. Two TPPT characters form a
preamble byte. The number of preamble
bytes sent is defined by the TPL
field. The receiving DPLL uses the preamble
pattern to lock on the receiving
signal.
VxWorks 5.5/Tornado 2.2 BSP Rel. 1.0 for PPMC-275 5 - 79