STPCE1EDBI 데이터 시트보기 (PDF) - STMicroelectronics
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STPCE1EDBI Datasheet PDF : 87 Pages
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PIN DESCRIPTION
Signal Name
ISA_CLK
ISA_CLK2X
OSC14M
LA[23:17]
SA[19:0]
SD[15:0]
ALE
MEMR#, MEMW#
SMEMR#, SMEMW#
IOR#, IOW#
MCS16#, IOCS16#
BHE#
ZWS#
REF#
MASTER#
AEN
IOCHCK#
IOCHRDY
ISAOE#
GPIOCS#
IRQ_MUX[3:0]
DREQ_MUX[1:0]
DACK_ENC[2:0]
TC
RTCAS
RMRTCCS#
KBCS#
RTCRW#
RTCDS#
Table 2-2. Definition of Signal Pins
Dir
Buffer Type2
Description
Qty
O
BT8TRP_TC
ISA Clock Output - Multiplexer Select
Line For IPC
1
O
BT8TRP_TC
ISA Clock x2 Output - Multiplexer Select
Line For IPC
1
O
BD8STRP_FT Buffered 14MHz clock
1
O
BD8STRUP_FT Unlatched Address
7
I/O
BD8STRUP_FT Latched Address
20
I/O
BD8STRP_FT Data Bus
16
O
BD4STRP_FT Address Latch Enable
1
I/O
BD8STRUP_FT Memory Read and Memory Write
2
O
BD8STRUP_FT
System Memory Read and Memory
Write
2
I/O
BD8STRUP_FT I/O Read and Write
2
I
BD4STRUP_FT Memory/IO Chip Select16
2
O
BD8STRUP_FT System Bus High Enable
1
I
BD4STRP_FT Zero Wait State
1
O
BD8STRP_FT Refresh Cycle.
1
I
BD4STRUP_FT Add On Card Owns Bus
1
O
BD8STRUP_FT Address Enable
1
I
BD4STRUP_FT I/O Channel Check.
1
I/O
BD8STRUP_FT
I/O Channel Ready (ISA) - Busy/Ready
(IDE)
1
O
BD4STRP_FT ISA/IDE Selection
1
I/O
BD4STRP_FT General Purpose Chip Select
1
I
BD4STRP_FT Time-Multiplexed Interrupt Request
4
I
BD4STRP_FT Time-Multiplexed DMA Request
2
O
BD4STRP_FT Encoded DMA Acknowledge
3
O
BD4STRP_FT ISA Terminal Count
1
O
BD4STRP_FT Real Time Clock Address Strobe
1
I/O
BD4STRP_FT ROM/RTC Chip Select
1
I/O
BD4STRP_FT Keyboard Chip Select
1
I/O
BD4STRP_FT RTC Read/Write
1
I/O
BD4STRP_FT RTC Data Strobe
1
LOCAL BUS
PA[23:20], [15], [8], [3:0]
O
BD4STRP_FT Address Bus
10
PA[19:16], [14:12],[7:4]
O
BD8STRUP_FT Address Bus
11
PA[11]
O
BD8STRP_FT Address Bus
1
PA[10:9]
O
BD4STRUP_FT Address Bus
2
PD[15:0]
I/O
BD8STRP_FT Data Bus
16
PRD1#,PRD0#
O
BD4STRUP_FT Peripheral Read Control
2
PWR1#
O
BD8STRUP_FT Peripheral Write Control
1
PWR0#
O
BD4STRUP_FT Peripheral Write Control
1
PRDY
I
BD8STRUP_FT Data Ready
1
FCS1#, FCS0#
O
BD4STRP_FT Flash Chip Select
2
IOCS#[3]
O
BD4STRP_FT I/O Chip Select
1
IOCS#[2:0]
O
BD8STRUP_FT I/O Chip Select
3
Note1: These pins must be connected to the 2.5 V power supply. They must not be connected to the 3.3V supply.
Note2: See Table 2-3 for buffer type descriptions.
Release 1.3 - January 29, 2002
13/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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