LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 168

• Manufacturer Part Number: LPC47N227TQFP
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

CR38 can only be accessed in the configuration state and after the CSR has been initialized to 38H.
CR38 is GPIO Polarity Register 4 and is used to select the polarity of GP40-GP47 pins.
CR39
CR39 can only be accessed in the configuration state and after the CSR has been initialized to 39H.
CR39 is GPIO Output Register and is used to select the output buffer of GP12-GP17, GP20 and
nIO_PME pins.
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
nIO_PME
GP40
GP41
GP42
GP43
GP44
GP45
GP46
GP47
GP12
GP13
GP14
GP15
GP16
GP17
GP20
The bits in this register are used to select the polarity of the
GP40-GP47 pins.
0=Non-Inverted
1=Inverted
The bits in this register are used to select the output buffer type of
the GP12-GP17, GP20 and nIO_PME pins.
0=Push-pull
1=Open Drain
GPIO Polarity Register 4
GPIO Output Register
Table 108 – CR38
Table 109 – CR39
168
DESCRIPTION
DESCRIPTION
Default: 0x00 on VTR POR
Default: 0x80 on VTR POR