STPC STMicroelectronics, STPC Datasheet - Page 12

• Manufacturer Part Number: STPC
• Description: PC Compatible Embeded Microprocessor
• Manufacturer: STMicroelectronics

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PIN DESCRIPTION
Table 2-2. Definition of Signal Pins
12/51
ISA/IDE COMBINED CONTROL
IOCHRDY / DIORDY
ISA CONTROL
OSC14M
ALE
BHE#
MEMR#, MEMW#
SMEMR#, SMEMW#
IOR#, IOW#
MASTER#
MCS16#, IOCS16#
REF#
AEN
ZWS#
IOCHCK#
ISAOE#
RTCAS#
GPIOCS#
IDE CONTROL
PIRQ
SIRQ
PDRQ
SDRQ
PDACK#
SDACK#
PIOR#
PIOW#
SIOR#
SIOW#
IPC
IRQ_MUX[3:0]
DREQ_MUX[1:0]
DACK_ENC[2:0]
TC
MONITOR INTERFACE
RED, GREEN, BLUE
VSYNC
HSYNC
VREF_DAC
RSET
COMP
DDC[1:0]
SCL / DDC[1]
Signal Name
Dir
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I/O Channel Ready (ISA) - Busy/Ready (IDE)
ISA bus synchronisation clock
Address Latch Enable
System Bus High Enable
Memory Read and Memory Write
System Memory Read and Memory Write
I/O Read and Write
Add On Card Owns Bus
Memory/IO Chip Select16
Refresh Cycle.
Address Enable
Zero Wait State
I/O Channel Check.
Bidirectional OE Control
Real Time Clock Address Strobe
General Purpose Chip Select
Primary Interrupt Request
Secondary Interrupt Request
Primary DMA Request
Secondary DMA Request
Primary DMA Acknowledge
Secondary DMA Acknowledge
Primary I/O Read
Primary I/O Write
Secondary I/O Read
Secondary I/O Write
Multiplexed Interrupt Request
Multiplexed DMA Request
DMA Acknowledge
ISA Terminal Count
Red, Green, Blue
Vertical Sync
Horizontal Sync
DAC Voltage reference
Resistor Set
Compensation
Display Data Channel Serial Link
I C Interface - Clock / Can be used for VGA DDC[1] signal
Issue 1.2
Description
Qty
1
1
1
1
2
2
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
2
3
1
3
1
1
1
1
1
2
1