Oki ML490 Maintenance Manual - Page 22
Transmission of SP/LF Motor Control Data
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2.1.6 SP/LF Motor Control The MPU transmits serially the SP motor data and the LF motor control data too the SP/LF motor driver, according to the commands sent from the MPU. LSI MPU φA/φB P23 SPU SPV SPW SLATCH-N P20 SDATA-N P22 SCLK-N MHM2025 SPU SPV SPW SP Decoder LF1 LF2 SP Motor SPM U U SPM V Distributor Driver V SPM W W Space D/A speed register φA/φB Shift register LF phase register A1 Driver A2 B1 B2 φA LF M φB LF Overdrive register D/A Transmission of SP/LF Motor Control Data SDATA-N D7 D6 D5 D4 D3 D2 D1 D0 SCLK-N SLATCH-N 42114101 Rev.1 22 /
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42114101
Rev.1
22 /
2.1.6
SP/LF Motor Control
The MPU transmits serially the SP motor data and the LF motor control data too the SP/LF motor
driver, according to the commands sent from the MPU.
Transmission of SP/LF Motor Control Data
MPU
φ
A/
φ
B
φ
A/
φ
B
φ
B
φ
A
LF
A1
A2
B1
B2
M
SLATCH-N
SDATA-N
SCLK-N
LSI
MHM2025
SPU
SPV
SPW
SPU
Distri-
butor
Driver
SPV
SPW
Decoder
Space
speed
register
LF phase
register
LF
Overdrive
register
D/A
D/A
Driver
Shift
register
SP
LF1
LF2
SPM U
SP Motor
SPM V
SPM W
U
V
W
P23
P20
P22
SDATA-N
SCLK-N
SLATCH-N
D7
D6
D5
D4
D3
D2
D1
D0