Datasheet

UM10398 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
User manual Rev. 12.3 — 10 June 2014 130 of 547
NXP Semiconductors
UM10398
Chapter 8: LPC1100XL series: I/O configuration (IOCONFIG)
8.4.32 IOCON_PIO3_0
7 ADMODE Selects Analog/Digital mode 1
0 Analog input mode
1 Digital functional mode
9:8 - - Reserved 00
10 OD Selects pseudo open-drain mode. 0
0 Standard GPIO output
1 Open-drain output
31:11 - - Reserved -
Table 136. IOCON_R_PIO1_2 register (IOCON_R_PIO1_2, address 0x4004 4080) bit
description
…continued
Bit Symbol Value Description Reset
value
Table 137. IOCON_PIO3_0 register (IOCON_PIO3_0, address 0x4004 4084) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO3_0.
0x1 Selects function DTR
.
0x2 Selects function CT16B0_MAT0.
0x3 Selects function TXD.
4:3 MODE Selects function mode (on-chip pull-up/pull-down resistor
control).
10
0x0 Inactive (no pull-down/pull-up resistor enabled).
0x1 Pull-down resistor enabled.
0x2 Pull-up resistor enabled.
0x3 Repeater mode.
5 HYS Hysteresis. 0
0 Disable.
1 Enable.
9:6 - - Reserved 0011
10 OD Selects pseudo open-drain mode. 0
0 Standard GPIO output
1 Open-drain output
31:11 - - Reserved -