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Siretta Ltd
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Berkshire RG7 1PW
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24
ZETA-xxP Series
Hardware Manual
rev
D
USB Serial Port Interface
Figure 17.
ZETA-xxP USB Connector
A mini USB type B connector is provided for USB serial connection. ESD
protection to +/-4KV contact discharge and +/-8KV air discharge is provided. Pins
on this connector are shown in
table 7
below.
Table 8.
Mini USB Connectors
Pin
Name
Direction
Description
Low Level
Nominal
High Level
1
VBUS
Input
USB Power VBUS
4.75V
5V
5.25V
2
D-
Differential
Data Minus
4.75V
5V
5.25V
3
D+
Differential
Data Plus
4.75V
5V
5.25V
4
-
-
-
-
-
-
5
GND
Input
Signal Ground
-
0V
-