Philips LPC213 Series User Manual page 78

Philips Semiconductors
Volume 1
Table 60:
Bit
1:0
2
3
31:4 -
7.4.4 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 61:
PINSEL0 and PINSEL1 Values Function
00
01
10
11
The direction control bit in the IO0DIR/IO1DIR 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 2 (PINSEL2 - 0xE002 C014) bit description
Symbol Value Function
- - Reserved, user software should not write ones
to reserved bits. The value read from a reserved
bit is not defined.
GPIO/DEBUG 0 Pins P1.36-26 are used as GPIO pins.
1 Pins P1.36-26 are used as a Debug port.
GPIO/TRACE 0 Pins P1.25-16 are used as GPIO pins.
1 Pins P1.25-16 are used as a Trace port.
- Reserved, user software should not write ones
to reserved bits. The value read from a reserved
bit is not defined.
Pin function select register bits
Rev. 01 — 24 June 2005
Primary (default) function, typically GPIO
port
First alternate function
Second alternate function
Reserved
UM10120
Chapter 7: Pin Connect Block
Reset value
NA
P1.26/RTCK
P1.20/
TRACESYNC
NA
Value after Reset
00
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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