pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 9

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

Revision 1.07
Table of Contents
4.4
4.5
4.3.4
4.3.5
MULTI-INPUT WAKE-UP (MIWU) ........................................................................................... 105
4.4.1
4.4.2
4.4.3
4.4.4
GENERAL-PURPOSE I/O (GPIO) PORTS ............................................................................. 113
4.5.1
4.5.2
4.5.3
4.5.4
ICU Registers ............................................................................................................ 101
Usage Hints ............................................................................................................... 104
Features .................................................................................................................... 105
Operation ................................................................................................................... 105
MIWU Registers ........................................................................................................ 109
Usage Hints ............................................................................................................... 112
Features .................................................................................................................... 114
GPIO Port Px ............................................................................................................. 114
GPI Port Py ................................................................................................................ 116
GPO Port Pz .............................................................................................................. 117
(Continued)
Pending Interrupts ............................................................................................... 99
Interrupt Priorities ................................................................................................ 99
Power-Down Modes ............................................................................................ 99
External Interrupt Inputs ...................................................................................... 99
Interrupt Assignment ............................................................................................ 99
ICU Register Map .............................................................................................. 101
Interrupt Vector Register (IVCT) ........................................................................ 101
NMI Status Register (NMISTAT) ....................................................................... 101
Power Fail Interrupt Control and Status Register (PFAIL) ................................. 102
Interrupt Status Register 0 (ISTAT0) ................................................................. 102
Interrupt Status Register 1 (ISTAT1) ................................................................. 103
Interrupt Enable and Mask Register 0 (IENAM0) .............................................. 103
Interrupt Enable and Mask Register 1 (IENAM1) .............................................. 103
Edge Interrupt Clear Register 0 (IECLR0) ......................................................... 104
Edge Interrupt Clear Register 1 (IECLR1) ......................................................... 104
Initializing ........................................................................................................... 104
Clearing ............................................................................................................. 104
Nesting ............................................................................................................... 104
MIWU Register Map .......................................................................................... 109
Edge Detection Register (WKEDG1) ................................................................. 109
Edge Detection Register (WKEDG2) ................................................................. 110
Edge Detection Register (WKEDG3) ................................................................. 110
Edge Detection Register (WKEDG4) ................................................................. 110
Pending Register (WKPND1) ............................................................................ 110
Pending Register (WKPND2) ............................................................................ 110
Pending Register (WKPND3) ............................................................................ 110
Pending Register (WKPND4) ............................................................................ 111
Enable Register (WKEN1) ................................................................................. 111
Enable Register (WKEN2) ................................................................................. 111
Enable Register (WKEN3) ................................................................................. 111
Enable Register (WKEN4) ................................................................................. 111
Pending Clear Register (WKPCL1) ................................................................... 111
Pending Clear Register (WKPCL2) ................................................................... 112
Pending Clear Register (WKPCL3) ................................................................... 112
Pending Clear Register (WKPCL4) ................................................................... 112
GPIO Port Functionality ..................................................................................... 113
Bidirectional Port with Alternate Function .......................................................... 114
Input Only Port with Alternate Function ............................................................. 116
Output Only Port with Alternate Function .......................................................... 117
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