M37271MF-252SP datasheet(30/97 Pages) MITSUBISHI

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MITSUBISHI MICROCOMPUTERS

M37271MF-XXXSP

M37271EF-XXXSP, M37271EFSP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER

and ON-SCREEN DISPLAY CONTROLLER

Data slicer control register 1

(DSC1: address 00EA 16)

Data slicer control bit

0: Data slicer stopped

1: Data slicer operating

Field to be sliced data selection bit

Fix this bit to “0.”

Data latch completion flag for caption

data in main data slice line

0: Data is not yet latched

1: Data is latched

Field determination flag

Hsep

Vsep

Hsep

Vsep

0 :

1 :

Field of main data

slice line

Field for setting

reference voltage

b2 b1

0 0

0 1

1 0

F1 and F2

1 1

F1 and F2

Definition of fields 1 (F1) and 2 (F2)

Hsep

VSYNC

Vsep

F1 :

Hsep

VSYNC

Vsep

F2 :

Data slicer control register 3

(DSC3: address 0210 16)

Line selection bit for slice voltage

0: Main data slice line

1: Sub-data slice line

Field of sub-data

slice line

b2 b1

0 0

0 1

1 0

F1 and F2

1 1

F1 and F2

Field to be sliced data selection bit

Setting bit of sub-data slice line

Field for setting

reference voltage

Fix these bits to “0.”

Data slicer control register 2

(DSC2: address 00EB 16)

Timing signal generating circuit

control bit

0: Stopped

1: Operating

Reference clock source selection

bit

0: Video signal

1: HSYNC signal

Test bit: read-only

Fix these bits to “0.”

V-pulse shape determination flag

0: Match

1: Mismatch

Fix this bit to “0.”

Test bit: read-only

Figure 23 shows the structure of the data slicer control registers.

Fig. 23. Structure of data slicer control registers

M37271MF-252SP Datasheet(PDF) 30 Page - Mitsubishi Electric Semiconductor

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