NEC uPD72256 Manuals

Manuals and User Guides for NEC uPD72256. We have 1 NEC uPD72256 manual available for free PDF download: Preliminary User's Manual

NEC uPD72256 Preliminary User's Manual (343 pages)

Graphics Controllers

Brand: NEC | Category: Video Card | Size: 2.01 MB

Table of Contents
7
Chapter 1 Introduction

11
Block Diagrams

12
Chapter 2 Pin Functions

15
Pin Lists

15
- Ravin-L Pin List
  16
- Ravin-M Pin List
  21
Pull-Up Resistor Pin Groups

26
Ravin-L Pin Functions

30
- Ravin-L Pin to Signals Reference
  31
Ravin-M Pin Functions

36
Recommended Connection of Unused Pins

67
Pin States with Respect to Reset

82
Chapter 3 Memory and Register Map

83
Ravin-L Memory and Register Map

83
Ravin-M Memory and Register Map

85
Chapter 4 System Controller

86
- Functional Overview
  87
Clock Generator

88
- PLL Configuration
  89
- Main System Clock
  90
- Video Output Clocks
  90
- Internal RAM Clock (Ravin-L Only)
  90
Resets

91
- PLL Restart
  92
- Software and Watchdog Reset
  93
- Host CPU Synchronization
  93
System Watchdog

94
Modules Control Functions

94
- Internal RAM Control (Ravin-L Only)
  94
- SDRAM Control
  94
- Video Input Control
  95
- Video Output Control
  97
Boot Mode Function

98
System Controller Registers

100
Chapter 5 Host CPU Interface

119
- Functional Overview
  122
Lbus Interface

123
- Lbus-I/F Signals
  123
- Lbus-I/F Addressing Modes
  124
- Lbus-I/F Protocol
  125
Mode

126
- Lbus-I/F DMA Request
  132
Adbus Interface

133
- Adbus-I/F Signals
  133
- Adbus-I/F Address Offset Function
  133
- Adbus-I/F Data Access
  134
- Adbus-I/F Principle Timing
  136
Address Alignment

139
- Interrupt Controller
  140
AHB Master Status and Interrupts

142
Host-I/F Registers

143
- Host-I/F Registers Overview
  143
- Host-I/F Registers Details
  144
Chapter 6 Video Input (Ravin-M Only)

151
- Functional Overview
  152
Data Format and Synchronization

154
- ITU-R656 Data Input
  154
- RGB Data Input
  155
- Synchronization Status Information
  156
Video Capturing

156
- Video Capturing Modes
  156
- Start and Stop of Video Capturing
  157
Scaling, Cropping and Storing

158
- Cropping
  159
- Scaling
  160
- Storing
  164
Colour Format Conversions

164
YUV Adjustment

166
Dithering

167
- Video Data FIFO and Framebuffer Addressing
  167
- Framebuffer Addressing
  168
Interrupts

169
- Interrupt Sources
  169
- Interrupt Control
  170
Video Input Registers

171
- Video Input Registers Overview
  171
- Video Input Registers Details
  172
Chapter 7 Video Output

188
Functional Overview

190
Colour Formats

191
- CLUT Palette
  191
- Display Data Output Formats
  192
Timing Signals

193
- Display Data Clock Signal
  193
- Synchronization Signals
  194
DMA FIFO and Framebuffer Addressing

196
- FIFO Watermark
  197
- Framebuffer Addressing
  197
Interrupts

197
- Interrupt Sources
  198
- Interrupt Controller
  199
Start and Stop of Video Output

200
Video Output Registers

201
- Video Output Registers Overview
  201
- Video Output Registers Details
  202
Chapter 8 Drawing Engine

215
Functional Overview

216
Introduction

217
Drawing Features

219
- Drawing Features Summary
  219
- Vector Drawing
  220
- Bitblt
  221
- Bilinear Filtering
  222
Input and Output Data Formats

223
- Source and Destination Data
  223
- Texture Colour Formats
  223
- Framebuffer Colour Formats
  223
Rendering Pipeline

225
- Coordinate Transformation
  225
- Rasterization
  225
- Edge Setup Linear Case
  227
- Edge Setup Quadratic Case
  231
- Band Filter
  234
- Clamping Unit
  235
- Combiner Unit
  236
- Rasterization Optimization
  237
- Colourization
  240
- Texturing
  241
- Src_One
  245
- Src_Onedst_Alpha
  245
- Src_Alpha
  245
- Src_One_Minus_Alpha Dst_One
  245
- Src_One_Minus_Alpha
  245
- Dst_One_Minus_Alpha
  245
- Blending
  245
Rendering Modes

247
- Register Based Mode
  247
- Display List Based Mode
  247
  - Interrupts
    250
  - Interrupt Sources
    250
  - Interrupt Control
    250
Performance Counters

252
Drawing Engine Registers

253
- Drawing Engine Registers Overview
  253
- Control Registers Details
  255
- Colour Registers Details
  265
- Limiter Registers Details
  268
- Texture Registers Details
  272
- Miscellaneous Registers Details
  284
Chapter 9 External Memory Interface Controller

290
- Functional Overview
  293
SDRAM Interface

294
- SDRAM Initialization
  295
- SDRAM Refresh Control
  297
Static Memory Interface

302
- Static RAM Timing
  302
Address Decoder

307
- Chip Select Configuration
  307
- Address Adjustment
  311
Memory Controller Power-Down

312
Memory Controller Registers

314
- Memory Controller Registers Overview
  314
- Memory Controller Registers Details
  315
Chapter 10 Register List

332

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NEC uPD72256 Manuals

NEC uPD72256 Preliminary User's Manual (343 pages)

Table of Contents

Chapter 1 Introduction

Block Diagrams

Chapter 2 Pin Functions

Pin Lists

Pull-Up Resistor Pin Groups

Ravin-L Pin Functions

Ravin-M Pin Functions

Recommended Connection of Unused Pins

Pin States with Respect to Reset

Chapter 3 Memory and Register Map

Ravin-L Memory and Register Map

Ravin-M Memory and Register Map

Chapter 4 System Controller

Clock Generator

Resets

System Watchdog

Modules Control Functions

Boot Mode Function

System Controller Registers

Chapter 5 Host CPU Interface

Lbus Interface

Mode

Adbus Interface

Address Alignment

AHB Master Status and Interrupts

Host-I/F Registers

Chapter 6 Video Input (Ravin-M Only)

Data Format and Synchronization

Video Capturing

Scaling, Cropping and Storing

Colour Format Conversions

YUV Adjustment

Dithering

Interrupts

Video Input Registers

Chapter 7 Video Output

Functional Overview

Colour Formats

Timing Signals

DMA FIFO and Framebuffer Addressing

Interrupts

Start and Stop of Video Output

Video Output Registers

Chapter 8 Drawing Engine

Functional Overview

Introduction

Drawing Features

Input and Output Data Formats

Rendering Pipeline

Rendering Modes

Performance Counters

Drawing Engine Registers

Chapter 9 External Memory Interface Controller

SDRAM Interface

Static Memory Interface

Address Decoder

Memory Controller Power-Down

Memory Controller Registers

Chapter 10 Register List

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