GP21/P16/nDS1 if P16 or nDS1 function is used as Open Drain Output
GP22/P12/nMTR1 if P12 or nMTR1 function is used as Open Drain Output
GP27/nIO_SMI if nIO_SMI function is used
GP42/nIO_PME if nIO_PME function is used
SER_IRQ
GP40/DRVDEN0 if DRVDEN0 function is used as an Open Drain.
GP41/DRVDEN1 if DRVDEN1 function is used as an Open Drain.
nMTR0 if used as an Open Drain Output
nDS0 if used as an Open Drain Output
nDIR if used as an Open Drain Output
nSTEP if used as an Open Drain Output
nWDATA if used as an Open Drain Output
nWGATE if used as an Open Drain Output
nHDSEL if used as an Open Drain Output
nINDEX
nTRK0
nWRTPRT
nRDATA
nDSKCHG
GPIOs
4.2.2 HARDWARE MONITORING BLOCK PINS
The following pins require external pullup resistors to 3.3V only:
SCLK
SDA
A0/RESET#/THERM#/XNOR_OUT if the RESET# or THERM# function is used. This limits the SMBus address
to 0101101 (unless external circuitry is provided). See section 7.18.2 SMBus Interface.
VID0-VID3
12V_IN/VID4 if VID4 function is used.
SMSC DS – LPC47M192
Page 21
DATASHEET
Rev. 03/30/05