NXP Semiconductors LPC1311 User Manual

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User manual Rev. 3 — 14 June 2011 96 of 368
NXP Semiconductors
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Chapter 7: LPC13xx I/O configuration
7.4.10 IOCON_PIO0_3
7.4.11 IOCON_PIO0_4
Table 106. IOCON_PIO0_3 register (IOCON_PIO0_3, address 0x4004 402C) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO0_3.
0x1 Selects function USB_VBUS (function not available on all
parts).
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 -
Table 107. IOCON_PIO0_4 register (IOCON_PIO0_4, address 0x4004 4030) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO0_4 (open-drain pin).
0x1 Selects I2C function SCL (open-drain pin).
7:3 - - Reserved 00000
9:8 I2CMODE Selects I2C mode. 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 -

NXP Semiconductors LPC1311 Specifications

General

Brand	NXP Semiconductors
Model	LPC1311
Category	Controller
Language	English