參數(shù)資料
型號: M3727GM8-XXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
封裝: 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù): 101/131頁
文件大小: 1130K
代理商: M3727GM8-XXXFP
M3727GM6/M8–XXXSP/FP M37272E8SP/FP
Rev.1.00
Apr 01, 2001
page 69 of 127
REJ03B0132-0100Z
b7 of raster color
register
OSD control
register
I/O
Port
1
0
8.11.3 Clock for OSD
As a clock for display to be used for OSD, it is possible to select one
of the following 3 types.
Data slicer clock output from the data slicer (approximately 26 MHz)
OSC1 clock supplied from the pins OSC1 and OSC2
Clock from the ceramic resonator or the LC oscillator from the pins
OSC1 and OSC2
This OSD clock for each block can be selected by the following bits
: bit 7 of the raster color register (address 00D916), bits 3 to 6 of the
clock source control register (addresses 00D016). A variety of char-
acter sizes can be obtained by combining dot sizes with OSD clocks.
When not using the pins OSC1 and OSC2 for the OSD clock I/O
pins, the pins can be used as sub-clock I/O pins or port P2.
Fig. 8.11.12 Block Diagram of OSD Selection Circuit
Table 8.11.2 Setting for P26/OSC1/XCIN, P27/OSC2/XCOUT
OSD clock
I/O Pin
0
1
0
Sub-clock
I/O Pin
0
Function
Register
b6
b5
“0”
“10”
“0”
Data slicer
circuit
Data slicer clock
(See note)
OSC1 clock
Ceramic LC
Oscillating mode for OSD
OC6, OC5
“1”
OC3
OC4
CC mode block
OSD mode block
Note : To use data slicer clock, set bit 0 of data slicer control register 1 to “1.”
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