IA82527
Data Sheet
CAN Serial Communications Controller
December 20, 2012
Table 3. Pin/Signal Descriptions (Continued)
Pin
Signal
mode0
mode1
Name
mode0
mode1
PLCC PQFP
Description
44
30
38
24
modeN (N = 1 or 0). Input. The logic levels at the
mode0 and mode1 inputs determine the operating
mode (i.e., interface type) of the IA82527 as follows:
mode1 mode0
Interface Type
0
0
1
1
0
1
0
1
8-bit multiplexed Intel
16-bit multiplexed Intel
8-bit multiplexed non-Intel
8-bit Non-multiplexed non-Intel
The mode1 and mode0 inputs are also used to
establish the Serial Interface Mode as follows: when
the IA82527 is reset, if
• mode1 = 0
• mode0 = 0
• rd_n = 0
• wr_n = 0
the Serial Interface Mode will be selected.
The mode1 and mode0 pins are internally connected
to weak pull-downs. These pins will be pulled low
during reset if unconnected. Following reset, these
pins will float.
mosi
a4/ad4/mosi
42
36
master out slave in. Input. Serial Interface Mode.
When the IA82527 is configured to operate with a
serial interface, mosi is the serial data input.
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