3.2 PINS THAT REQUIRE EXTERNAL PULLUP RESISTORS
The following pins require external pullup resistors:
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
KDAT
KCLK
MDAT
MCLK
GP36/KBDRST if KBDRST function is used
GP37/A20M if A20M function is used
GP20/P17 If P17 function is used
GP21/P16 if P16 function is used
GP22/P12 if P12 function is used
GP27/nIO_SMI if nIO_SMI function is used as Open Collector output.
GP42/nIO_PME if nIO_PME function is used as Open Collector output.
SER_IRQ
GP40/DRVDEN0 if DRVDEN0 function is used as Open Collector.
GP41/DRVDEN1 if DRVDEN1 function is used as Open Collector.
nMTR0 if used as Open Collector Output
nDS0 if used as Open Collector Output
nDIR if used as Open Collector Output
nSTEP if used as Open Collector Output
nWDATA if used as Open Collector Output
nWGATE if used as Open Collector Output
nHDSEL if used as Open Collector Output
nINDEX
nTRK0
nWRTPRT
nRDATA
nDSKCHG
SMSC DS – LPC47M14X
Page 15
Rev. 03/19/2001
SMSC [ SMSC CORPORATION ]
