LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 166

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

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

CR35 can only be accessed in the configuration state and after the CSR has been initialized to 34H.
CR34 is GPIO Polarity Register 2. It is used to select the polarity of GP20-GP24 and IO_PME pins,
and select alternate function on GP13 and GP14 pins.
CR35
CR35 can only be accessed in the configuration state and after the CSR has been initialized to 35H.
CR35 is GPIO Direction Register 3 and is used to select the direction of GP30-GP37 pins.
BIT NO.
BIT NO.
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Function Select
Function Select
GP13 Alternate
GP14 Alternate
Polarity select
Type: R/W
Type: R/W
BIT NAME
BIT NAME
nIO_PME
GP20
GP21
GP22
GP23
GP24
GP30
GP31
GP32
GP33
GP34
GP35
GP36
GP37
These bits are used to select the polarity of the GP20-GP24 pins.
0=Non-Inverted
1=Inverted
This bit is used to select the polarity of the nIO_PME pin.
0=Non-Inverted
1=Inverted
Note: configuring this pin function with non-inverted polarity will give
an active low output signal. The output type can be either open
drain or push-pull. (See CR39).
0=GPIO
1=IRQIN1
0=GPIO
1=IRQIN2
The bits in this register are used to select the direction of the
GP30-GP37 pins.
0=Input
1=Output
GPIO Direction Register 3
GPIO Polarity Register 2
Table 104 – CR34
Table 105 – CR35
166
DESCRIPTION
DESCRIPTION
Default: 0x00 on VTR POR
Default: 0x00 on VTR POR