參數(shù)資料
型號: DMA2271
英文描述: Consumer IC
中文描述: 消費性IC
文件頁數(shù): 5/36頁
文件大?。?/td> 496K
代理商: DMA2271
DMA 2271, DMA 2280, DMA 2281
5
2. Specifications
2.1. Outline Dimensions
Fig. 2–1:
DMA 2271, DMA 2280, DMA 2281 in 68–pin
PLCC package
Weight approx. 4.5 g,
Dimensions in mm
2.2. Pin Connections
Pin Nr.
Signal Name
Symbol
1
RAM Data Input/Output
RDAT
2
RAM Address Output 0 (LSB)
RA0
3
RAM Address Output 1
RA1
4
RAM Address Output 2
RA2
5
RAM Address Output 3
RA3
6
RAM Address Output 4
RA4
7
RAM Read/Write Output
R/WQ
8
Row Address Select Output
RASQ
9
RAM Address Output 5
RA5
10
RAM Address Output 6
RA6
11
RAM Address Output 7 (MSB)
RA7
12
IM Bus Clock Input
IMC
13
IM Bus Ident Input
IMI
14
IM Bus Data Input/Output
IMD
15
Reset Input
RESQ
16
18.432 MHz Output
XTAL1
17
18.432 MHz Input
XTAL2
18
Output Disable Input
ODI
19
leave vacant
20
leave vacant
21
Chroma Output 7 (MSB)
CO7
22
Chroma Output 6
CO6
23
Chroma Output 5
CO5
24
Chroma Output 4
CO4
25
PLL Tuning Data Output
PLLD
26
PLL Tuning Clock Output
PLLC
27
Chroma Output 3
CO3
28
Chroma Output 2
CO2
29
Chroma Output 1
CO1
30
Chroma Output 0 (LSB)
CO0
31
Luma Output 0
LO0
32
Luma Output 1
LO1
33
Luma Output 2
LO2
34
Luma Output 3
LO3
35
Luma Output 4
LO4
36
Luma Output 5
LO5
37
Luma Output 6
LO6
38
Luma Output 7 (MSB)
LO7
39
Baseband Input 7 (MSB)
BI7
40
Baseband Input 6
BI6
41
Baseband Input 5
BI5
42
Baseband Input 4
BI4
43
Baseband Input 3
BI3
44
Baseband Input 2
BI2
45
Baseband Input 1
BI1
46
Baseband Input 0 (LSB)
BI0
47
leave vacant
48
Clamping Output
CLMP
49
AGC Output
AGC
50
Combined Output for Horizon-
tal Blanking and Key
KEY
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