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82527 Datasheet(PDF) 5 Page - Intel Corporation

Part # 82527
Description  SERIAL COMMUNICATIONS CONTROLLER CONTROLLER AREA NETWORK PROTOCOL
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

82527 Datasheet(HTML) 5 Page - Intel Corporation

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82527
Pin Name
Pin Type
Pin Description
AD0A0ICP
IO-I-I
AddressData bus in 8-bit multiplexed mode
AD1A1CP
IO-I-I
Address bus in 8-bit non-multiplexed mode
AD2A2CSAS
IO-I-I
Low byte of AD bus in 16-bit multiplexed mode
AD3A3STE
IO-I
In Serial Interface mode the following pins have the following meaning
AD4A4MOSI
IO-I-I
AD0
ICP
Idle Clock Polarity
AD5A5
IO-I
AD1
CP
Clock Phase
AD6A6SCLK
IO-I-I
AD2
CSAS
Chip Select Active State
AD7A7
IO-I
AD3
STE
Sync Transmit Enable
AD6
SCLK
Serial Clock Input
AD4
MOSI
Serial Data Input
AD8D0P10
IO-O-IO
High byte of AD bus in 16-bit multiplexed mode
AD9D1P11
IO-O-IO
Data bus in 8-bit non-multiplexed mode
AD10D2P12
IO-O-IO
Low speed IO port P1 pins in 8-bit multiplexed mode and serial mode
Port pins have weak pullups until the port is configured by writing to 9FH
AD11D3P13
IO-O-IO
and AFH
AD12D4P14
IO-O-IO
AD13D5P15
IO-O-IO
AD14D6P16
IO-O-IO
AD15D7P17
IO-O-IO
P20
IO
P2 in all modes
P21
IO
P26 is INT
when MUX e 1 and is open-drain
P22
IO
P27 is WRH
in 16-bit multiplexed mode
P23
IO
P24
IO
P25
IO
P26INT
IO-O
P27WRH
IO-I
Mode0
I
These pins select one of the four parallel interfaces These pins are
weakly held low during reset
Mode1
I
Mode1
Mode0
0
0
8-bit multiplexed
Intel
0
0
Serial Interface mode entered when RD
e
0
WR
e
0 upon reset
0
1
16-bit multiplexed
Intel
1
0
8-bit multiplexed
non-Intel
1
1
8-bit non-multiplexed
ALEAS
I-I
ALE used for Intel modes
AS used for non-Intel modes except Mode 3 this pin must be tied high
RD
IRD
used for Intel modes
E
I
E used for non-Intel modes except Mode 3 Asynchronous this pin must
be tied high
WR
WRL
IWR
in 8-bit Intel mode and WRL
in 16-bit Intel mode
RW
I
RW
used for non-Intel modes
READY
O
READY is an output to synchronize accesses from the host
microcontroller to the 82527 READY is an open-drain output to the host
MISO
O
microcontroller MISO is the serial data output for the serial interface
mode
DSACK0
O
DSACK0
is an open-drain output to synchronize accesses from the host
microcontroller to the 82527
5


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