
CL-PS7500FE
System-on-a-Chip for Internet Appliance
June 1997
7
ADVANCE DATA BOOK v2.0
TABLE OF CONTENTS
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