Watkins-Johnson Company WJ-8718-19/FE Instruction Manual page 146

WJ-8718-19/FE Hr RhCElVhR
RAV-
ADO--
AD7 •
no
SWITCH
LATCH
U3
RD
*
ADDR
LATCH
U2
SWITCHES U2
*
CO
Q1-Q7
0
CLK
GEN
U5.S1.Y1
ADDR
DECU4
CLK
R/W
YO
♦
UARTU1
CIRCUIT DESCRIPTION
DRIVER
U9A.
U10D.U7
RCVR
U8
U
DRIVER
U7
RCVR
UB
n
t* » DTR
r< Sfc TXD
•RXD
•CTS
•CTS
•RXD
•TXD
REM
IN
MjN
IN
'DTU
Figure 3-30. Asynchronous I/O Block Diagram
3-63