Intel 386 User Manual
Page 539
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Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
A-10
The following input pins have permanent weak pull-up resistors: TCK, TDI, TMS, TRST#,
SMI#, PEREQ/TMRCLK2, and FLT#.
STXCLK
I/O
WH
Q
X or Q
Q
TDO
O
Z or Q
Z or Q
Z or Q
Z or Q
TMROUT2
O
WH
Q
X or Q
Q
TMROUT1:0
O
WL
Q
X or Q
Q
TXD1
O
1
Q
X or Q
Q
TXD0
O
WL
Q
X or Q
Q
UCS#
O
0
Q
X
1
WDTOUT
O
0
Q
X
Q
W/R#
O
0
1
1
Z
WR#
O
1
1
1
1
Table A-4. Pin States After Reset and During Idle, Powerdown, and Hold (Sheet 2 of 2)
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.
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