iDP3550/3551 User ’s Manual
10. SERIAL INTERFACE
10.1Specifications
(1)Synchronous system: Asynchronous
(2)Baud rate: 150, 300, 600, 1200, 2400, 4800, 9600, or 19200 bps (User selectable)
(3)Configuration of one word
• Start bit | : 1 bit |
• Data bits | : 7 or 8 bits (User selectable) |
• Parity bit | : Odd, even, or none (User selectable) |
• Stop bit | : 1 bit or more |
(4)Signal polarity
• Mark | = | Logic "1" | |
• Space | = | Logic "0" | (+3 V to +12 V) |
(5)Received data (RXD signal)
• Mark | = | 1 |
• Space | = | 0 |
(6)Reception control (DTR signal)
• Mark | : | Data transfer disabled |
• Space | : | Data transfer enabled |
32 | CITIZEN |
