FENIX IMVICO
TK51/IF9000 OPERATION MANUAL
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NOTES
✔
The ‘n’ prefix used before a signal name means that they are active in ‘0’ logic level.
If the host system does not provide any of the signal lines mentioned above, both
communication types could fail.
✔
It is recommended to use twisted pair cables (signal/ground), with the return sides
connected to the system signal ground level.
✔
Do not ignore the nACK and BUSY signals during data transmissions. An attempt to
transmit data without nACK or BUSY control signals might cause lost data.
✔
The interface cables should have the minimum required possible length (
maximum
recommended length: 2 m
).
Fig. 2.8-
IEEE 1284-B connector from outside the TK51/IF9000
.
2.2.4- USB CONNECTOR
The TK51/IF9000 USB interface has the following general features:
•
USB specification
USB 1.1 (12MHz full speed)
•
Transfer type
Bulk
•
Maximum receive/transmit endpoint size
64 bytes
•
Current consumption from USB bus
2mA max.
2.2.4.1- Assignments of USB connector terminals
Pin
Signal name
1
Vbus
2
D –
3
D+
4
GND
Fig. 2.9-
USB connector as seen from outside the TK51/IF9000.
User has to use a standard “B” series USB connector.
Pin 18
Pin 36
Pin 19
Pin 1
Pin nº4
Pin nº1
Pin nº3
Pin nº2
