E m b e d d e d B o x
T K S - G 5 0 - Q M 7 7
Chapter 2 Quick Installation Guide
2-24
5 TXD+
6 N/C
7 RXD-
8 N/C
9 Ground
10
N/C
RS-485 Mode
Pin
Signal Pin
Signal
1 TXD-
2 N/C
3 N/C
4 N/C
5 TXD+
6 N/C
7 N/C
8 N/C
9 Ground
10
N/C
Note:
Issue: COM port limitation for the speed test during the communication.
Root Cause:
In serial communication, data bits received at the serial port are bundled
into a byte and transmitted into the serial port hardware buffer. From the
buffer, the byte is sent into the CPU. If a new byte arrives before the byte
in the buffer is moved into the CPU, a Hardware Overrun Error occurs.
Solution:
1. Try hardware handshaking.
2. See if the UART is an older un-buffered version or a new buffered
UART (such as a 16550A or 16750). You should use a buffered UART
for the reasons discussed above.
3. Change the Receive (Rx Trigger) buffer to 8, 4, or 1 (1 is a last resort).
4. For the product, the speed setting of Series Port (COM) is under
9600bps.
Summary of Contents for TKS-G50-QM77
Page 38: ...Embedded Box T K S G 5 0 Q M 7 7 Chapter 3 AMI BIOS Setup 3 1 AMI Chapter 3 BIOS Setup...
Page 98: ...Embedded Box T K S G 5 0 Q M 7 7 Appendix B I O Information B 1 I O Information Appendix B...
Page 99: ...SubCompact Board T K S G 5 0 Q M 7 7 Appendix B I O Information B 2 B 1 I O Address Map...
Page 100: ...Embedded Box T K S G 5 0 Q M 7 7 Appendix B I O Information B 3...
Page 101: ...SubCompact Board T K S G 5 0 Q M 7 7 Appendix B I O Information B 4 B 2 Memory Address Map...
Page 103: ...Embedded Box T K S G 5 0 Q M 7 7 Appendix C Mating Connector C 1 Mating Connector Appendix C...
Page 106: ...Embedded Box T K S G 5 0 Q M 7 7 Appendix D AHCI Setting D 1 AHCI Setting Appendix D...
Page 110: ...Embedded Box T K S G 5 0 Q M 7 7 AppendixE Digital I O Ports E 1 Digital I O Ports Appendix E...
