lc7874e Sanyo Semiconductor Corporation, lc7874e Datasheet - Page 13

• Manufacturer Part Number: lc7874e
• Description: Cd Graphics Decorder
• Manufacturer: Sanyo Semiconductor Corporation

CD-G Instructions
The contents of instructions in the CD Red Book which are supported by the LC7874E are as follows.
ZERO mode (MODE = 0, ITEM = 0)
LINE GRAPHICS mode (MODE = 1, ITEM = 0)
TV GRAPHICS mode (MODE = 1, ITEM = 1)
Outline of Functions
1. Crystal clock oscillation: XIN1, XOUT1, XIN2, XOUT2, N/P, 4FSCO, FSCO
2. Subcode interface: S1, S2, SBCK, SFSY, PW, SBSY
INSTRUCTION (4): Write FONT
INSTRUCTION (12): Write Scroll SCREEN
INSTRUCTION (1): Preset MEMORY
INSTRUCTION (2): Preset BORDER
INSTRUCTION (6): Write FONT FOREGROUND/BACKGROUND
INSTRUCTION (20): scroll SCREEN with preset
INSTRUCTION (24): scroll SCREEN with copy
INSTRUCTION (30): Load CLUT color-0 color-7
INSTRUCTION (31): Load CLUT color-8 color-15
INSTRUCTION (38): EXCLUSIVE-OR FONT
XIN1 and XOUT1 are 14.31818 MHz (NTSC) crystal oscillator connection pins, and XIN2 and XOUT2 are
17.734476 MHz (PAL) crystal oscillator connection pins. Both modes can be supported by switching the N/P pin.
The 4FSCO pin outputs the Xtal OSC clock, and the FSCO pin outputs this clock divided by 4. The pin functions in
each mode are shown below.
Control of the S1 and S2 pins provides interfacing with the following three modes. Driving the mute pin high
disables SBSY and PW input and SBCK output.
14.31818 MHz
XIN1, XOUT1
S1
H
H
L
*
S2
H
L
L
17.734476 MHz
LC7861N/67 interface
LC7860K/63 interface
LC78681/62X/63X interface
XIN2, XOUT2
*
Mode
N/P
H
L
PAL/GBIDH
TV system
NTSC/M
17.734476 MHz
14.31818 MHz
4FSCO
LC7874E
3.579545 MHz
4.433619 MHz
FSCO
No. 5521-13/22