M306V2 Mitsubishi, M306V2 Datasheet - Page 38

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

38
Figure 2.5.4 Clock generating circuit
Figure 2.5.3 OSD clock connection example
2.5.2 OSD Oscillation Circuit
2.5.3 Clock Control
The OSD clock oscillation circuit can obtain simply a clock for OSD by connecting an LC oscillator or a
ceramic resonator (or a quartz-crystal oscillator) across the pins OSC1 and OSC2. Which of LC oscillator
or a ceramic resonator (or a quartz-crystal oscillator) is selected by setting bits 1 and 2 of the clock control
register (address 0205
Figure 2.5.4 shows the block diagram of the clock generating circuit.
Software reset
RESET
Interrupt request
level judgment
output
WAIT instruction
CM0i : Bit i at address 0006
CM1i : Bit i at address 0007
WDCi : Bit i at address 000F
CM10 “1”
Write signal
16
).
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
S
R
S
R
Q
Q
CM04
16
16
16
CM05
X
CIN
C1
X
Main clock
OSC1
IN
Microcomputer
Sub clock
a
X
X
OUT
COUT
L
CM02
OSC2
CM06=0
CM17,CM16=00
1/2
C2
1/32
CM06=0
CM17,CM16=01
1/2
f
C
f
C32
and ON-SCREEN DISPLAY CONTROLLER
CM06=0
CM17,CM16=10
a
MITSUBISHI MICROCOMPUTERS
1/2
Divider
b
f
AD
f
M306V2ME-XXXFP
1
c
b
CM06=1
d
f
f
32
f
C
8
CM07=1
1/2
CM07=0
Details of divider
M306V2EEFP
CM06=0
CM17,CM16=11
f
f
f
1
8
32
SIO2
SIO2
1/2
SIO2
c
BCLK
d
Rev. 1.0