參數(shù)資料
型號: M37151M8-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): 138/139頁
文件大?。?/td> 1690K
代理商: M37151M8-XXXFP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP
97
Rev. 1.0
8.15 OSD CLOCK GENERATING CIRCUIT
When generate OSD clock based on main clock, connect capacity to
FILT pin.
Set bit 0 of the clock control register 1 (address 00CD16) to operate
OSD clock generating circuit “0.” Clock control register 1 (address
00CD16) is shown in Fig.8.15.3. Then, clock frequency for OSD is set
up by the clock frequency register (address 021016).
Clock frequency setting register is shown in Fig.8.15.2.
Fig.8.15.1 Display Oscillation Circuit
FLIT
C1
Table.8.15.1 OSD Clock frequency
Clock frequency
setting register
(address 021016)
OSD clock
frequency
0C
0D
26 MHz
28 MHz
In order to generate normally oscillation frequency for OSD shown in
Table 8.15.1, be sure to set the main clock f (XIN) to 8MHz. Then, set
up not any values other than these.
Fig.8.15.3 Clock Control Register 1
Clock control register 1
Clock control register 1 (CC1) [Address 00CD16]
b7 b6 b5 b4 b3 b2 b1 b0
0
000
0
System clock generating
circuit control bit (CC10)
0: Operation
1: Stop
Fix these bits to "0"
1 to
7
Name
B
Functions
After reset R W
R W
Fig.8.15.2 Clock Frequency Register
Clock frequency set register(CFS) [Address 021016]
Clock frequency set register
0 to
7
b7 b6 b5 b4 b3 b2 b1 b0
Clock frequency bit
(CFS 0 to 7)
0E
Clock frequency (Note)
Setting value(Limitation)
Frequency(MHz)
0C
26
0D
28
Name
B
Functions
After reset R W
R W
Note: Do not set other than the values shown above to CFS.
Then, must to use at f(XIN) = 8 MHz.
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