CL-PS7500FE Просмотр технического описания (PDF) - Cirrus Logic
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CL-PS7500FE Datasheet PDF : 251 Pages
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CL-PS7500FE
System-on-a-Chip for Internet Appliance
11. I/O SUBSYSTEMS ..............................................................................................................109
11.1 Introduction.....................................................................................................................................109
11.2 I/O Address Space Usage ..............................................................................................................109
11.3 Additional I/O Chip Select Decode Logic........................................................................................110
11.4 Simple 8-MHz I/O ...........................................................................................................................111
11.5 Module I/O ......................................................................................................................................111
11.6 PC Bus-Style I/O ............................................................................................................................111
11.7 DMA During I/O Cycles ..................................................................................................................114
11.8 Clock Synchronization Conditions ..................................................................................................114
11.9 Keyboard/mouse Interface..............................................................................................................114
11.10 Analog-to-Digital Converter Interface .............................................................................................116
11.10.1 Counters .........................................................................................................................116
11.10.2 Interrupt Control..............................................................................................................116
11.10.3 Status of Interface...........................................................................................................117
11.10.4 Control ............................................................................................................................118
11.10.5 Comparators ...................................................................................................................118
11.10.6 Converter Operation .......................................................................................................118
11.11 Timers.............................................................................................................................................119
11.11.1 Programming the Timers ................................................................................................120
11.11.2 Timer interrupts ..............................................................................................................120
11.12 General-Purpose, 8-bit-wide, I/O Port ............................................................................................120
11.13 ID and OD Open-Drain I/O Pins .....................................................................................................121
11.14 Version and ID Registers................................................................................................................121
11.15 Interrupt Control .............................................................................................................................121
12. VIDEO FEATURES..............................................................................................................124
12.1 Pixel Clock ......................................................................................................................................124
12.2 Palette ............................................................................................................................................126
12.2.1 Palette Updating .............................................................................................................126
12.3 Cursor.............................................................................................................................................126
12.3.1 Cursor in HiRes Mode ....................................................................................................127
12.3.2 Cursor in LCD Mode .......................................................................................................127
12.4 HiRes Support ................................................................................................................................127
12.4.1 CL-PS7500FE Support for HiRes Mode .........................................................................127
12.5 Liquid Crystal Displays ...................................................................................................................129
12.5.1 LCD Grayscaling.............................................................................................................129
12.5.2 Dual-Panel LCDs (Duplex Mode)....................................................................................129
12.5.3 Single-Panel Color LCDs ................................................................................................130
12.6 External Support.............................................................................................................................130
12.6.1 ECLK ..............................................................................................................................131
12.6.2 Power Saving Considerations .........................................................................................131
12.6.3 Vertical and Horizontal Synchronization .........................................................................131
12.6.4 GENLOCK ......................................................................................................................131
12.7 Analog Outputs...............................................................................................................................131
12.7.1 DAC Control....................................................................................................................131
12.7.2 Pedestal Current .............................................................................................................132
12.7.3 Video DAC Currents .......................................................................................................132
12.7.4 Monochrome Output .......................................................................................................132
June 1997
ADVANCE DATA BOOK v2.0
7
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