IA82527 Datasheet, PDF (13/45 Pages) InnovASIC, Inc – Serial Communications Controller CAN Protocol

IA82527
CAN Serial Communications Controller
As of Production Ver. 00
04 May 2007
PRELIMINARY
Table 3. IA82527 Pin/Signal Descriptions, continued
Signal
Name
Pin
PLCC QFP
miso
ready/miso
28
22
mode0
—
44
38
mode1
—
30
24
mosi
a4/ad4/mosi
42
36
Description
master in slave out. Output (open drain). Serial Interface Mode.
When the IA82527 is configured to operate with a serial interface,
miso is the serial data output.
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
0
0
0
1
1
0
1
1
Interface Type
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.
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.
continued . . .
Copyright  2007
©
EN21070504-00
Page 13 of 45
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