LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 109
LPC47N237-MD
Manufacturer Part Number
LPC47N237-MD
Description
3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LPC47N237-MD.pdf
(138 pages)
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3.3v I/O Controller for Port Replicators and Docking Stations
17.4.35 CR38
17.4.36 CR39
SMSC DS – LPC47N237
CR38 can only be accessed in the configuration state and after the CSR has been initialized to 38H. CR38
is the LPC GPIO Polarity Register and is used to select the polarity of LGP44-LGP47 pins.
CR39 can only be accessed in the configuration state and after the CSR has been initialized to 39H. CR39
is used to program nIO_PME pin output type and polarity.
BIT NO.
BIT NO.
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Type: R/W
Type: R/W
BIT NAME
BIT NAME
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
LGP44
LGP45
LGP46
LGP47
LGP44
LGP45
LGP46
LGP47
LPC GPIO Direction Register
The bits in this register are used to select the direction of the
LGP44-LGP47 pins.
0=Input
1=Output
The bits in this register are used to select the polarity of the
LGP44-LGP47 pins.
0=Non-Inverted
1=Inverted
LPC GPIO Polarity Register
DATASHEET
Table 17.31 – CR37
Table 17.32 – CR38
Page 109
DESCRIPTION
DESCRIPTION
Default: 0x00 on VTR POR
Default: 0x00 on VTR POR
Revision 0.3 (10-26-04)
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