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 118 of 547
NXP Semiconductors
UM10398
Chapter 8: LPC1100XL series: I/O configuration (IOCONFIG)
8.4.12 IOCON_PIO0_5
8.4.13 IOCON_PIO1_9
Remark: See Section 8.1 for part specific details.
8.4.14 IOCON_PIO3_4
Remark: See Section 8.1 for part specific details.
Table 117. IOCON_PIO0_5 register (IOCON_PIO0_5, address 0x4004 4034) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO0_5 (open-drain pin).
0x1 Selects I2C function SDA (open-drain pin).
7:3 - Reserved. 00000
9:8 I2CMODE Selects I2C mode. Select Standard mode (I2CMODE = 00,
default) or Standard I/O functionality (I2CMODE = 01) if the
pin function is GPIO (FUNC = 000).
00
0x0 Standard mode/ Fast-mode I2C.
0x1 Standard I/O functionality
0x2 Fast-mode Plus I2C
0x3 Reserved.
31:10 - - Reserved. -
Table 118. IOCON_PIO1_9 register (IOCON_PIO1_9, address 0x4004 4038) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO1_9.
0x1 Selects function CT16B1_MAT0.
0x2 Selects function MOSI1.
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 -