Brainboxes CC-313 Manual page 49

AT QUAD AND LYNX RS232
Figure 4-7. Pin outs of the PCI Quad 4 Port RS232 38
pin D connector
P IN 2 0 - D S R # 1
P IN 2 1 - R T S # 1
P IN 2 2 - C T S # 1
P IN 2 3 - R I# 1
P IN 2 4 - D C D # 2
P IN 2 5 - R X D # 2
P IN 2 6 - T X D # 2
P IN 2 7 - D T R # 2
P IN 2 8 - G N D # 2
P IN 2 9 - D S R # 3
P IN 3 0 - R T S # 3
P IN 3 1 - C T S # 3
P IN 3 2 - R I# 3
P IN 3 3 - D C D # 4
P IN 3 4 -R X D # 4
P IN 3 5 - T X D # 4
P IN 3 6 - D T R # 4
P IN 3 7 - G N D # 4
NOTE: On the above diagram the # symbol followed by a number
is used to notify a port on the cable. E.g. #4 means port 4, hence
PIN36 - DTR#4 is pin 36 of the 37way connector, which
corresponds to the DTR function on port 4.
RS232 Pinouts and Port Cabling
P IN 1 - D C D # 1
P IN 2 - R X D # 1
P IN 3 - T X D # 1
P IN 4 - D T R # 1
P IN 5 - G N D # 1
P IN 6 - D S R # 2
P IN 7 - R T S # 2
P IN 8 - C T S # 2
P IN 9 - R I# 2
P IN 1 0 - D C D # 3
P IN 1 1 - R X D # 3
P IN 1 2 - T X D # 3
P IN 1 3 - D T R # 3
P IN 1 4 - G N D # 3
P IN 1 5 - D S R # 4
P IN 1 6 - R T S # 4
P IN 1 7 - C T S # 4
P IN 1 8 - R I# 4
P IN 1 9 - N O C O N N E C T IO N
Chapter 4 Page 43