Phytec miniMODUL-537, Hardware Manual

Page: 19 / 66

Pin Configuration

PHYTEC Meßtechnik GmbH 1993 L-006e_2
13
B32 R Receive-data-output (TTL)
Already connected with RxD 1 to B56 (port 6.1)
For other applications of this driver please cut the connection
B32-B56.
B34 /R Inverse receive-data-output (TTL)
Already connected with A17 (port 3.2, /INT 0) for PHYNET.
For other applications of P3.2 open JP6.
B36 /RE RS-485-Receiver_Enable
Input: Already connected with B52 (port 5.0) for PHYNET.
For other applications of P5.0 cut connection B36-B52.
B35 /DE RS-485 Transmit-Enable
Input: Already connected with B51 (port 5.1) for PHYNET.
For other applications of P5.1 cut connection B35-B51
General Control signals
A57 ALE Address-Latch_Enable, see controller manual
A31/ PSEN Program_Store_Enable,see controller manual
A22/ RD (Port 3.7) see controller manual
A22/ WR (Port 3.6) see controller manual
A36/ WRO
Write_Out
(Write-pulse unbuffered, can be turned-off)
Output active LOW. This signal corresponds to the /WR-signal, but
can be disabled by a RESET or the M-DIS-function. For missing
supply voltage this signal has no voltage.