LPC47M182 SMSC Corporation, LPC47M182 Datasheet - Page 128

• Manufacturer Part Number: LPC47M182
• Description: ADVANCED I/O CONTROLLER WITH MOTHERBOARD GLUE LOGIC
• Manufacturer: SMSC Corporation

Note 1:
7.27.2 Description
Revision 1.8 SMSC/Non-SMSC Register Sets (02-24-05)
nCDC_DWN
_ENAB
GP10
GP11
GP12
GP13
GP14
GP15
GP16
GP17
DDCSDA_5V
DDCSCL_5V
DDCSDA_3V
DDCSCL_3V
FUNCTION
DEFAULT
nCDC_DWN_ENAB
FUNCTION
When DDC functions are selected, these pins require external pull-ups to appropriate voltages.
Each GPIO port has a 1-bit data register and an 8-bit configuration control register. The data register for
each GPIO port is represented as a bit in one of the 8-bit GPIO DATA Registers, GP1 to GP2. The bits in
these registers reflect the value of the associated GPIO pin as follows. Pin is an input: The bit is the value
of the GPIO pin. Pin is an output: The value written to the bit goes to the GPIO pin. Latched on read and
write. All of the GPIO registers are located in the GPIO/Runtime Register logical device (see “GPIO
Runtime Registers” section when LD_NUM=0 and “Runtime Register Block Runtime Registers” section
when LD_NUM=1).
addresses are listed in Table 7.17.
DEFAULT
GP10
GP11
GP12
GP13
GP14
GP15
GP16
GP17
ALT FUNC 1
GP24
-
-
-
-
-
-
FAN_TACH1
(Note 1)
FAN_TACH2
(Note 1)
GP20
GP21
GP22
GP23
Table 7.17 – General Purpose I/O Port Assignments
ALT. FUNC. 1
FAN_TACH1
FAN_TACH2
-
-
-
-
-
-
-
-
-
EETI0
EETI1
-
-
ALT FUNC 2
The GPIO ports with their alternate functions and configuration state register
GP24
-
-
-
-
-
-
Table 7.16 – GPIO Summary
DATASHEET
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
VTR
PWR WELL
ALT. FUNC. 2
Note 1
Note 1
Note 1
Note 1
128
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RESET
PCI
REGISTER
DATA
GP1
GP2
Advanced I/O Controller with Motherboard GLUE Logic
-
-
-
-
-
-
-
-
-
-
-
-
-
VCC POR
1
REGISTER
BIT NO.
DATA
1
2
3
4
5
6
0
0
7
Input
Input
Input
Input
Input
Input
Input
Input
Input
Hi-Z
Hi-Z
Hi-Z
Hi-Z
VTR POR
REGISTER
RUNTIME
OFFSET
SMSC LPC47M182
(HEX)
GPIO
15
16
PME/EETI
-
PME
PME
PME
PME
PME
PME
PME
PME
PME/EETI
PME/EETI
PME
PME
Datasheet