PC87360 datasheet(9/168 Pages) NSC

9 / 168 page

Table of Contents (Continued)

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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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