Motorola DragonBall MC68328 User Manual page 8

4.4 Operation Overview ..................................................................................... 4-7
4.5 Display Control............................................................................................. 4-7
4.5.1 LCD Screen Format................................................................................... 4-7
4.5.2 Cursor Control Logic.................................................................................. 4-8
4.5.3 Display Data Mapping................................................................................ 4-8
4.5.4 Gray Scale Generation .............................................................................. 4-8
4.5.5 Gray Palette Mapping ................................................................................ 4-8
4.5.6 FRC Offset Control .................................................................................. 4-10
4.5.7 Cursor and Blinking Rate Control ............................................................ 4-10
4.5.8 Low-Power Mode ..................................................................................... 4-10
4.6 DMA Controller Overview .......................................................................... 4-11
4.6.1 Basic Operation ....................................................................................... 4-11
4.7 Register Descriptions................................................................................. 4-13
4.7.1 System Memory Control Registers .......................................................... 4-13
4.7.1.1 Screen Starting Address Register (SSA)............................................... 4-13
4.7.1.2 Virtual Page Width Register (VPW) ....................................................... 4-13
4.7.2 Screen Format Registers ......................................................................... 4-13
4.7.2.1 Screen Width Register (XMAX) ............................................................. 4-13
4.7.2.2 Screen Height Register (YMAX) ............................................................ 4-14
4.7.3 Cursor Control Registers ......................................................................... 4-14
4.7.3.1 Cursor X Position Register (CXP).......................................................... 4-14
4.7.3.2 Cursor Y Position Register (CYP).......................................................... 4-14
4.7.3.3 Cursor Width & Height Register (CWCH) .............................................. 4-15
4.7.3.4 Blink Control Register (BLKC) ............................................................... 4-15
4.7.4 LCD Panel Interface Registers ................................................................ 4-15
4.7.4.1 Panel Interface Configuration Register (PICF) ...................................... 4-15
4.7.4.2 Polarity Configuration Register (POLCF)............................................... 4-16
4.7.4.3 LACD (M) Rate Control Register (ACDRC) ........................................... 4-17
4.7.5 Line Buffer Control Registers................................................................... 4-17
4.7.5.1 Pixel Clock Divider Register (pxcd) ....................................................... 4-17
4.7.5.2 Clocking Control Register (CKCON)...................................................... 4-17
4.7.5.3 Last Buffer Address Register (LBAR) .................................................... 4-18
4.7.5.4 Octet Terminal Count Register(OTCR).................................................. 4-18
4.7.5.5 Panning Offset Register (POSR) ........................................................... 4-19
4.7.6 Gray-Scale Control Registers .................................................................. 4-19
4.7.6.1 Frame-Rate Modulation Control Register (FRCM) ................................ 4-19
4.7.6.2 Gray Palette Mapping Register (GPMR) ............................................... 4-19
4.8 Bandwidth Calculation and Saving ............................................................ 4-20
4.8.1 Bus Overhead Considerations................................................................. 4-20
5.1 Operating Characteristics ............................................................................ 5-1
5.1.1 Prescaler and Counter............................................................................... 5-1
5.1.2 Alarm ......................................................................................................... 5-1
MOTOROLA
Real-Time Clock Module
MC68328 DRAGONBALL PROCESSOR USER'S MANUAL
Section 5
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