8-62
11. USB CIRCUIT
IC801 (MAIN MPU) uses as the I2 C-Bus master, and IC851 (USB MPU) uses as the I2 C-Bus slave.
At the time of power on of the monitor, IC801 forwards the present value and the necessary early period data
to IC851 through I
2
C-Bus (SCL, SDA).
In the case that CN-USB and PC (USB HOST) are connecting with USB cable, the 5V from PC is input to
IC851 pin27 through Q851, Q852.
Then according to IC851 forwards these data to PC through D+/D-, the monitor is recognized as the human
interface device.
And, in the case that CN-USB and PC are connected with USB cable in the condition of power off of the monitor,
the monitor is not recognized as a/the human interface device, because IC851 pin27 becomes low by Q851,
Q852.
In the case that the monitor is adjusted with USB ,the WINDOWS application called APPLET is used.
For example, when we do the adjustment of H.SIZE by using APPLET, the command that makes H. SIZE a
certain value is forwarded from PC to IC851 through D+/D-.
At this time, IC851 forwards 1 pulse to the INT line, because it needs to forward the command to IC801.
By this IC801 reads out the command from IC851 through I2 C-Bus, because it recognizes that the command
from PC is forwarded to IC851.
IC801 controls DAC by the command as OSM control.
34
33
27
60
6
1
25
INT
SCL
SDA
64
3
Q852
Q85
1
R857
R855
ZD854
R85N
R85P
1
2
3
4
54
37
52
IC80
1
CN-USB
D-
D+
5V
IC85
1
5V
(Fig.11.1) USB Circuit
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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