M306V2 Mitsubishi, M306V2 Datasheet - Page 174

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

174
Figure 2.14.11 Data clock position register
2.14.10 Data Clock Generating Circuit
2.14.11 16-bit Shift Register
This circuit generates a data clock synchronized with the start bit detected in the start bit detecting circuit.
The data clock stores caption data to the 16-bit shift register. When the 16-bit data has been stored and
the clock run-in determination circuit determines clock run-in, the caption data latch completion flag is set.
This flag is reset at a falling of the vertical synchronous signal (V
The caption data converted into a digital value by the comparator is stored into the 16-bit shift register in
synchronization with the data clock. The contents of the stored caption data can be obtained by reading
out the caption data register 1 (addresses 0263
0265
the occurrence of a data slicer interrupt (refer to “2.14.12 Interrupt request generating circuit)”.
16
, 0264
Data clock position register
b7 b6 b5 b4 b3 b2 b1 b0
16
). These registers are reset to “0” at a falling of V
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
Nothing is assigned.
If an attempt to write to these bits, write “0.” The read turns out to be “0.”
Bit symbol
DPS0
DPS1
DPS2
DPS3
DPS4
Symbol
DPS
Data clock position
set bits
Bit name
16
, 0262
Address
026A
16
16
) and caption data register 2 (addresses
sep
sep
. Read out data registers 1 and 2 after
and ON-SCREEN DISPLAY CONTROLLER
).
Function
MITSUBISHI MICROCOMPUTERS
When reset
XXX00001
M306V2ME-XXXFP
2
M306V2EEFP
R W
Rev. 1.0