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PC87360 Datasheet(PDF) 9 Page - National Semiconductor (TI) |
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PC87360 Datasheet(HTML) 9 Page - National Semiconductor (TI) |
9 / 168 page Table of Contents (Continued) 9 www.national.com 5.4 FAN SPEED MONITOR BITMAP ............................................................................................ 114 6.0 General-Purpose Input/Output (GPIO) Port 6.1 OVERVIEW ............................................................................................................................. 115 6.2 BASIC FUNCTIONALITY ........................................................................................................ 116 6.2.1 Configuration Options ................................................................................................ 116 6.2.2 Operation ................................................................................................................... 116 6.3 EVENT HANDLING AND SYSTEM NOTIFICATION .............................................................. 117 6.3.1 Event Configuration ................................................................................................... 117 Event Type and Polarity ............................................................................................ 117 Event Debounce Enable ............................................................................................ 117 6.3.2 System Notification .................................................................................................... 117 6.4 GPIO PORT REGISTERS ....................................................................................................... 118 6.4.1 GPIO Pin Configuration (GPCFG) Register .............................................................. 119 6.4.2 GPIO Pin Event Routing (GPEVR) Register ............................................................. 120 6.4.3 GPIO Port Runtime Register Map ............................................................................. 120 6.4.4 GPIO Data Out Register (GPDO) .............................................................................. 121 6.4.5 GPIO Data In Register (GPDI) .................................................................................. 121 6.4.6 GPIO Event Enable Register (GPEVEN) .................................................................. 122 6.4.7 GPIO Event Status Register (GPEVST) .................................................................... 122 7.0 WATCHDOG Timer (WDT) 7.1 OVERVIEW ............................................................................................................................. 123 7.2 FUNCTIONAL DESCRIPTION ................................................................................................ 123 7.3 WATCHDOG TIMER REGISTERS ......................................................................................... 124 7.3.1 WATCHDOG Timer Register Map ............................................................................. 124 7.3.2 WATCHDOG Timeout Register (WDTO) .................................................................. 124 7.3.3 WATCHDOG Mask Register (WDMSK) .................................................................... 125 7.3.4 WATCHDOG Status Register (WDST) ...................................................................... 126 7.4 WATCHDOG TIMER REGISTER BITMAP ............................................................................. 126 8.0 ACCESS.bus Interface (ACB) 8.1 OVERVIEW ............................................................................................................................. 127 8.2 FUNCTIONAL DESCRIPTION ................................................................................................ 127 8.2.1 Data Transactions ..................................................................................................... 127 8.2.2 Start and Stop Conditions .......................................................................................... 127 8.2.3 Acknowledge (ACK) Cycle ........................................................................................ 128 8.2.4 Acknowledge after Every Byte Rule .......................................................................... 129 8.2.5 Addressing Transfer Formats .................................................................................... 129 8.2.6 Arbitration on the Bus ................................................................................................ 129 8.2.7 Master Mode .............................................................................................................. 130 Requesting Bus Mastership ....................................................................................... 130 Sending the Address Byte ......................................................................................... 130 Master Transmit ......................................................................................................... 130 Master Receive .......................................................................................................... 131 Master Stop ............................................................................................................... 131 |
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Similar Description - PC87360 |
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