Mindray BC-2800 - 1.6 Digital Inputs and Outputs

Hardware
1.6 Digital Inputs and Outputs
1.6.1 Serial Port
The analyzer has 6 serial ports, which are illustrated in Figure 1-6.
Figure 1-6 Serial ports
The CPU incorporates 2 UART controllers (3.3LVTTL), one to control the motor
of the driving board and the other communicates with the recorder (powered by
5VTTL). The FPGA implements 2 UART (3.3VTTL), one to connect the keypad
and the other reserved to control the pump. Another 2 UARTs (RS232) are
implemented inside the Super I/O to connect the scanner and to communicate
with the PC.
1.6.2 Parallel Port and PS/2 Port
The Super I/O provides a DB25 parallel connector to connect to connect a
printer or a floppy drive (the power supply of the floppy drive is supplied by the
PS/2). The software will automatically adapt to the connected printer or the
floppy drive.
The Super I/O provides a keyboard interface and a mouse interface (COM3 and
COM4). Note that the BC-2800 does not support the mouse yet.
1.6.3 GPIOs
1 Signals of the Start key
The FPGA detects the input signal, which will turn low when the Start key is
pressed.
2 Volumetric metering Signals
The FPGA detects the signals sent by the start transducer and the end
transducer.
BC-2800 Auto Hematology Analyzer (V1.0) 1- 9