D-F0390 NP-326 Product specifications Ver.0.02
11
7) Timing chart
POWER
T2 T3
DATA
/STB
BUSY
T1 T4 T5 T6
/ACK
T1 = 3500msec (Max)
T4 = 500nsec (Max)
T2, T3 = 500nsec (Min)
T5, T6 = 4
μ
sec(TYP)
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
: Asynchronous
2) Transmission speed: 9600, 19200, 38400, 115200bps (user selectable)
3) A word consists of
Start bit
: 1bit
Data bit
: 7 or 8 bit (user selectable)
Parity bit
: odd, even or no parity (user selectable)
Stop bit
: more than 1 bit
4) Signal polarity
RS-232C
Mark
=
Logic “1” (-3V -- -12V)
Space =
Logic “0” (+3V -- +12V)
5) Receive data (RD signal)
RS-232C
Mark
=
1
Space
=
0
6) Reception control (DTR signal)
RS-232C
Mark
=
1
Space
=
0
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