Intel 386

A-9
SIGNAL DESCRIPTIONS
Table A-4 lists the states of output and bidirectional pins after reset and during idle mode, pow-
erdown, and hold.
Table A-4. Pin States After Reset and During Idle, Powerdown, and Hold (Sheet 1 of 2)
Symbol Type
Pin State
Reset Idle Powerdown Hold
A25:1 O111Z
ADS# O 1 1 1 Z
BHE# O 0 X 0 Z
BLE# O 0 X 1 Z
CAS2:0 O 1 1 1 Z
CLKOUT O Q Q 0 Q
CS4:0# O WH Q X 1
CS6:5# O 1 Q X 1
D15:0 I/OZZZZ
DACK1:0# O 1 Q X 1
D/C# O100Z
DTR1:0 O WH X X X
EOP# I/OD WH Z Z Z
HLDA O WL Q X 1
LBA# O 1 Q X 1
LOCK# O WH X X Z
M/IO# O 0 1 1 Z
P1.5:0 I/O WH X X X
P1.7:6 I/O WL X X X
P2.4:0 I/O WH X X X
P2.6:5 I/O WL X X X
P2.7 I/O WH X X X
P3.7:0 I/O WL X X X
PWRDWN O WL X 1 Q
RD# O1111
READY# I/OZZZZ
REFRESH# O 1 Q X 1
RTS1# O WL X X X
RTS0# O WH X X X
SMIACT# O 1 X X 1
SRXCLK I/O WH Q X or Q
(1)
Q
SSIOTX O WL Q X or Q
(1)
Q
NOTES:
1. X if clock source is internal; Q if clock source is external.
2. Q when shifting data out through the JTAG port, otherwise Z.