The Expansion Board - Siemens Cerberus GW-21 Technical Manual

TX
UART6
RX
TX
UART5
RX
4
Siemens Building Technologies
Cerberus Division
2.2

The expansion board

The expansion board supplies two asynchronous serial lines. It is mounted piggy back
on the CPU board.
DL1
DL2
DL3
DL4
S5
8 7 6 5 4 3
Fig. 2 The expansion board
UART
(S1 on CD95802)
2 1
E1481b
06.2000