CXD1807Q Просмотр технического описания (PDF) - Sony Semiconductor

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CXD1807Q

CD-G Decoder

Sony Semiconductor 

CXD1807Q

1-6. Clock

1) XIN, XOUT

In the NTSC mode, input the master clock (14.31818MHz) of this LSI. An oscillation circuit can be made

by connecting X'TAL to the XIN and XOUT pins. (The capacitor values depend on the crystal oscillator.)

When not used, XIN should be connected to GND.

2) XTL1, XTL2

In the PAL mode, input the master clock (17.734475MHz) of this LSI. An oscillation circuit can be made

by connecting the X'TAL to the XTL1 and XTL2 pins. (The capacitor values depend on the crystal

oscillator.)

When not used, XTL1 should be connected to GND.

1-7. Others

1) XRST

Reset input. When this pin is set to Low, this LSI is reset.

2) CDG

The output goes to High after detection of a subcode input CD-G command. This signal is cleared by a

reset input from the XRST pin.

3) TST0 to TSTD

Test pins. (These pins used for the shipping test of the LSI.)

Fix the TST0 to TST7 pins to Low.

2. CPU Interface

Each command can be input to this LSI by inputting address or data to the three pins; DIN, XLT and CLK, with

the timing shown in Fig. 1.

Description of Each Command

The following explains the various functions of each command. The relations between the address and data of

each command are summarized in Table 1.

2-1. Color setting commands for VOFF (address = CH)

The VOFF pin can make the screen monochromatic; the color then used is set using this command.

D7 D6 D5 D4 D3 D2 D1 D0

RGB select (MSB) colour data — —

The color is set using 4 bits for each of R, G and B. RGB select is used to select which of the colors R, G

or B is to be set.

D7 D6

00

Color selected

Red

01

Green

10

Blue

11

Don't care

On reset, the values Red=[0000], Green=[0000], Blue=[1111] are set.

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