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Functional Description
3
module to synchronize with the MCP750HA board.
MXDO
is the time-
multiplexed output line from the main board and
MXDI
is the time-
multiplexed line from the transition module. A 16-to-1 multiplexing
scheme is used with 10 MHz bit rate. Sixteen Time Slots are defined and
allocated as follows:
The MX function is used with PALs and some discrete devices.
MXSYNC#
is clocked out using the falling edge of
MXCLK
, and
MXDO
by using the
rising edge of the
MXCLK
.
MXDI
is sampled at the rising edge of
MXCLK
(the transition module synchronizes
MXDI
with
MXCLK
’s rising edge). The
timing relationships among
MXCLK
,
MXSYNC#
,
MXDO
, and
MXDI
are
shown in
:
Table 3-5. Multiplexing Sequence of the MX Function
MXDO
(From MCP750HA)
MXDI
(From TMCP700)
TIME SLOT
SIGNAL NAME
TIME SLOT
SIGNAL NAME
0
RTS3
0
CTS3
1
DTR3
1
DSR3/MID1
2
LLB3/MODSEL
2
DCD3
3
RLB3
3
TM3/MID0
4
RTS4
4
RI3
5
DTR4
5
CTS4
6
LLB4
6
DSR4/MID3
7
RLB4
7
DCD4
8
IDREQ
8
TM4/MID2
9
Reserved
9
RI4
10
Reserved
10
Reserved
11
Reserved
11
Reserved
12
Reserved
12
Reserved
13
Reserved
13
Reserved
14
Reserved
14
Reserved
15
Reserved
15
Reserved
Summary of Contents for MCP750HA Series
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