Pin Function Select Register Values; Koninklijke Philips Electronics N.v. 2006. All Rights Reserved - Philips LPC2101 User Manual

Philips Semiconductors
Volume 1
Table 61:
PINSEL1
23:22
25:24
27:26
29:28
31:30

7.4.3 Pin function select register values

The PINSEL registers control the functions of device pins as shown below. Pairs of bits in
these registers correspond to specific device pins.
Table 62:
PINSEL0 and PINSEL1 Values Function
00
01
10
11
The direction control bit in the IO0DIR register is effective only when the GPIO function is
selected for a pin. For other functions, direction is controlled automatically. Each derivative
typically has a different pinout and therefore a different set of functions possible for each
pin. Details for a specific derivative may be found in the appropriate data sheet.
User manual
Pin function select register 1 (PINSEL1 - 0xE002 C004)
Pin Name Value
P0.27 0 0
0 1
1 0
1 1
P0.28 0 0
0 1
1 0
1 1
P0.29 0 0
0 1
1 0
1 1
P0.30 0 0
0 1
1 0
1 1
P0.31 0 0
0 1
1 0
1 1
Pin function select register bits
Primary (default) function, typically GPIO
port
First alternate function
Second alternate function
Third alternate function
Rev. 01 — 12 January 2006
Chapter 7: Pin connect block
Function
GPIO Port 0.27
TRST (JTAG)
CAP2.0 (Timer 2)
Reserved
GPIO Port 0.28
TMS (JTAG)
CAP2.1 (Timer 2)
Reserved
GPIO Port 0.29
TCK (JTAG)
CAP2.2 (Timer 2)
Reserved
GPIO Port 0.30
TDI (JTAG)
MAT3.3 (Timer 3)
Reserved
GPIO Port 0.31
TDO (JTAG)
Reserved
Reserved
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
UM10161
...continued
Value after reset
0
0
0
0
0
Value after Reset
00
70