LPC1114FHI33 Datasheet, PDF (128/543 Pages) NXP Semiconductors – LPC111x/LPC11Cxx User manual

NXP Semiconductors
UM10398
Chapter 8: LPC1100XL series: I/O configuration (IOCONFIG)
8.4.33 IOCON_PIO3_1
Table 138. 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.
0x2 Selects function CT16B0_MAT1.
0x3 Selects function RXD.
4:3 MODE
Selects function mode (on-chip pull-up/pull-down resistor
10
control).
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
-
8.4.34 IOCON_PIO2_3
Table 139. 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.
4:3 MODE
Selects function mode (on-chip pull-up/pull-down resistor
10
control).
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
UM10398
User manual
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Rev. 12.1 — 7 August 2013
© NXP B.V. 2013. All rights reserved.
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