Signal Definitions; Interface Connection - Canon CANOSCAN D1230 series Service Manual

CHAPTER 2
C. Signal Definitions
USB uses two differential signal lines (D+ and D-) only to communicate with the host
computer.
Pin
1
2
3
4
Shell
D. Interface Connection
USB connector has A plug for connecting to upper layer and B plug for connecting to lower
layer.
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Signal
V
BUS
D-
D+
Signal GND
Chassis GND
Table 2-2
A Plug
To Host Computer
Figure 2-22
©
2001 CANON INC. CANOSCAN D1230U/D2400U REV.0 MAR. 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Chassis
2 1
3 4
B Plug
To Scanner