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M306V2EEFS 데이터시트(PDF) 174 Page - Renesas Technology Corp

부품명 M306V2EEFS
상세설명  SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
PDF  271 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M306V2EEFS 데이터시트(HTML) 174 Page - Renesas Technology Corp

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Rev.1.40
Oct 06, 2004 page 174 of 269
M306V2ME-XXXFP, M306V2EEFP
2.14.10 Data Clock Generating Circuit
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 (Vsep).
Figure 2.14.11 Data clock position register
b7 b6 b5 b4 b3 b2 b1 b0
Data clock position register
Data clock position
set bits
Nothing is assigned.
If an attempt to write to these bits, write “0.” The read turns out to be “0.”
Function
Bit name
R
W
Bit symbol
DPS0
Symbol
Address
When reset
DPS
026A16
XXX000012
DPS1
DPS2
DPS3
DPS4
2.14.11 16-bit Shift Register
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 026316, 026216) and caption data register 2 (addresses
026516, 026416). These registers are reset to “0” at a falling of Vsep. Read out data registers 1 and 2 after
the occurrence of a data slicer interrupt (refer to “2.14.12 Interrupt request generating circuit)”.



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