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 97 of 547
NXP Semiconductors
UM10398
Chapter 7: LPC1100/LPC1100C/LPC1100L series: I/O configuration
7.4.33 IOCON_PIO3_1
7.4.34 IOCON_PIO2_3
10 OD Selects pseudo open-drain mode. 0
0 Standard GPIO output
1 Open-drain output
31:11 - - Reserved -
Table 89. IOCON_PIO3_0 register (IOCON_PIO3_0, address 0x4004 4084) bit description
Bit Symbol Value Description Reset
value
Table 90. IOCON_PIO3_1 register (IOCON_PIO3_1, address 0x4004 4088) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO3_1.
0x1 Selects function DSR
.
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. See Section 7.1
for part
specific details.
0
0 Standard GPIO output
1 Open-drain output
31:11 - - Reserved -
Table 91. IOCON_PIO2_3 register (IOCON_PIO2_3, address 0x4004 408C) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO2_3.
0x1 Selects function RI
.
0x2 Selects function MOSI1.