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7) Timing chart
POWER
DATA
/STB
BUSY
/ACK
T1 = 3500msec (Max)
T2, T3 = 500nsec (Min)
8) Receive control
When BUSY signal stays at LOW, it is feasible to receive data from host computer.
But not feasible when BUSY signal stays at HIGH.
3.2 Serial interface (RS-232C compliant)
1) Synchronization
2) Transmission speed: 9600, 19200, 38400, 115200bps (user selectable)
3) A word consists of
Start bit
Data bit
Parity bit
Stop bit
4) Signal polarity
RS-232C
Mark
Space
5) Receive data (RD signal)
RS-232C
Mark
Space
6) Reception control (DTR signal)
RS-232C
Mark
Space
3.3 USB interface (V2.0 FULL SPEED compliant)
1) Version
: V2.0 FULL SPEED (12Mbps)
2) Port
: Upstream port (B jack)
3) Power
: Self powered
D-F0390 NP-326 Product specifications Ver.0.02
T2 T3
T1
T4
T4 = 500nsec (Max)
T5, T6 = 4μsec(TYP)
: Asynchronous
: 1bit
: 7 or 8 bit (user selectable)
: odd, even or no parity (user selectable)
: more than 1 bit
=
Logic "1" (-3V -- -12V)
=
Logic "0" (+3V -- +12V)
=
1
=
0
=
1
=
0
T5
T6
11
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