IA82527_13 Datasheet, PDF (19/58 Pages) InnovASIC, Inc – Serial Communications Controller—CAN Protocol

IA82527
CAN Serial Communications Controller
Data Sheet
December 20, 2012
Table 3. Pin/Signal Descriptions (Continued)
Signal
mode0
mode1
Name
mode0
mode1
Pin
PLCC
44
30
PQFP
38
24
Description
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 8-bit multiplexed Intel
0
1 16-bit multiplexed Intel
1
0 8-bit multiplexed non-Intel
1
1 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.
mosi
a4/ad4/mosi
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.
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.
IA211080504-07
Page 19 of 58
http://www.innovasic.com
Customer Support:
[phone]