參數(shù)資料
型號: M37225MC-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù): 93/128頁
文件大小: 1481K
代理商: M37225MC-XXXSP
M37225M6/M8/MA/MC-XXXSP, M37225ECSP
Rev.1.00
Nov 01, 2000
page 65 of 124
REJ03B0136-0100Z
(2) Dot size
The dot size can be selected by a block unit. The dot size in vertical
direction is determined by dividing HSYNC in the vertical dot size con-
trol circuit. The dot size in horizontal is determined by dividing the
following clock in the horizontal dot size control circuit : the clock
gained by dividing the OSD clock source (OSC1, main clock from pin
XIN) in the pre-divide circuit.
The dot size is specified by bits 3 and 4 of the block i control register.
Fig. 8.10.15 Block Diagram of Dot Size Control Circuit
Fig. 8.10.16 Definition of Dot Sizes
Refer to Figure 8.10.8 (the block i control register).
The block diagram of dot size control circuit is shown in Figure 8.10.15.
1 dot
1H
Scanning line of F1(F2)
Scanning line of F2(F1)
2H
3H
3TOSC
2TOSC
1TOSC
OSD control circuit
Synchronous
circuit
Horizontal dot size
control circuit
Main clock
XIN
HSYNC
OSC1
OCG0 = “1”
Vertical dot size
control circuit
Clock cycle
= 1TOSC
OCG1 = “0”
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