8-22
6. CPU CIRCUIT
1) CPU
IC801: 8 bit CPU / CMOS IC
IC802: EEPROM / CMOS IC
IC571: I/O Expander
This system has the following functions.
Frequency Counter
I
2
C BUS control
fH band
Degaussing Control
DAC control (see 2. DC Control Circuit)
PMS control (see 3. Power Management system (PMS) Circuit )
OSD control (see 5. User Control Operation)
a. Frequency Counter
IC801 counts Horizontal frequency by event counter, Vertical frequency by interval timer. Horizontal sync
is negative input to IC801 pin 4. Vertical sync is positive input to IC801 pin 36.
Sync range
Horizontal
31.0 - 130.0 kHz
Vertical
55.0 - 160 Hz
If Horizontal frequency is less than 1 kHz or Vertical frequency is less than 10 Hz, IC801 judges “NO
PULSE”. And IC801 enters to “PMS MODE”.
b. I
2
C BUS control
CPU (IC801) controls the following ICs through I
2
C BUS.
DAC
IC751(M62393FP)
、
IC532(M62392FP)
PREAMP
IC711(M52742ASP)
E
2
PROM
IC802(24LC08,M24C08)
、
IC8A1(24LCS21A)
I/O EXPANDER
IC571(M62320FP)
OSC IC(DSP)
IC501(HE6-0092)
OSD IC
IC791(M35070-050FP)
SUB CPU
IC851(MC68HC705BD32FU)
AUTO SIZE IC
IC8M1(BU6483K)
CONVERGENCE IC
IC8U1(uPD93299GD)
Summary of Contents for MultiSync FP1370
Page 13: ...4 4 REMARK SYMBOL Mount the EMF PWB 121E REMARK SYMBOL Clamp the connector ...
Page 14: ...4 5 REMARK SYMBOL COIL FORMING UPPER SIDE REMARK SYMBOL COIL FORMING LOWER SIDE ...
Page 23: ...4 14 REMARK SYMBOL REMARK SYMBOL Clamp CN CA CN CC and CN D with CLAMPER WIRE ...
Page 26: ...4 17 REMARK SYMBOL Clamp the wires SAFETY REMARK SYMBOL Clamp the wires CN ASD CN AF 21 ...
Page 80: ...5 51 Fig 3 11 CONV PWB Fig 3 12 EMF PWB CN EMF CN LL CN RR CNEM CN CA CN D CN CCB HS8N1 ...
Page 143: ...8 18 15V 80V AFC D FOCUS Fig 3 1 HIGH VOLTAGE CIRCUIT AND PROTECTOR CIRCUIT ...
Page 260: ...10 1 ...
Page 261: ...10 2 ...
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Page 263: ...10 4 ...
Page 264: ...10 5 ...
Page 266: ...for Human Potential ...
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