
DMA 2271, DMA 2280, DMA 2281
2
Contents
Page
Section
Title
3
3
3
1.
1.1.
1.2.
Introduction
General Information
Environment
5
5
5
6
8
9
9
9
11
12
15
17
20
2.
2.1.
2.2.
2.3.
2.4.
2.5.
2.5.1.
2.5.2.
2.5.3.
2.5.4.
2.5.5.
2.5.6.
2.5.7.
Specifications
Outline Dimensions
Pin Connections
Pin Descriptions
Pin Circuits
Electrical Characteristics
Absolute Maximum Ratings
Recommended Operating Conditions
Recommended Crystal Characteristics
Characteristics
DRAM Interface Characteristics
Waveforms
Frequency Responses
21
21
21
21
21
21
21
21
22
22
22
22
22
22
22
22
23
23
23
23
24
24
3.
3.1.
3.1.1.
3.1.2.
3.1.3.
3.1.4.
3.2.
3.2.1.
3.2.2.
3.2.3.
3.2.4.
3.2.5.
3.2.6.
3.2.7.
3.2.8.
3.3.
3.3.1.
3.3.2.
3.3.3.
3.3.4.
3.3.5.
3.3.6.
Functional Description
Clock and Data Recovery
The Code Converter
The Video Clamping Circuit and the AGC Circuit
The Phase Comparator and the PLL Filter
The Data Slicer and the Synchronization Circuit
Video Processing
The Luminance Store
The Luminance Interpolating Filter
The Contrast Multiplier
The Chrominance Store
The Line Interpolating Filter
The Chrominance Interpolating filter
The Color Saturation Multiplier
The Color Multiplier
Sound/Data Processing
The Golay and PT Byte Decoder
The Address Comparator
The Sound Decoder
The Sound Multiplex
The
Φ
A Audio Clock
The Buffer for Packet 0
25
25
25
25
25
25
26
4.
4.1.
4.2.
4.2.1.
4.2.2.
4.3.
4.3.1.
The Three Serial Interfaces
The S Bus Interface and the S Bus
The IM Bus Interface and the IM Bus
The IM Bus
IM Bus Addresses and Instructions
The Burst Bus
Control and Status Registers