ESD VME - ASIO16, Руководство пользователя

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Jumpers Configuration
1.4.3.3 Control Signals of the Serial Interfaces
The jumpers BR33 to BR40 cover the lines DTR1 to DTR16 with the
control lines RTS or DTR, if the jumpers BR43 to BR50 are set corre-
spondingly. A switch-over between these signals ensues only in
combination with the firmware!
A survey of the combination of the several jumpers is
displayed in figure 1.5.1 ’Circuitry of the Serial Interfaces’
The jumpers assignment to the channels is as follows:
channel jumper signals at P2
1+2 BR40 DTR1, DTR2
3+4 BR39 DTR3, DTR4
5+6 BR38 DTR5, DTR6
7+8 BR37 DTR7, DTR8
9+10 BR36 DTR9, DTR10
11+12 BR35 DTR11, DTR12
13+14 BR34 DTR13, DTR14
15+16 BR33 DTR15, DTR16
Table 1.4.5: Channel Assignment to the Jumpers BR33 to BR40
The jumpers set the ports OP4 and OP5, or OP0 and OP1 respectively,
of the DUART68681 (via drivers) to the local signal lines ’RTS/DTR’.
These lines are connected to the I/O connector P2 via the jumpers
BR43 to BR50 and BR53 to BR56.
Following functions are assigned to the ports by firmware:
port signal remark
OP0, OP1 RTS ’Request To Send’:
announcement of a transmit
process
(e.g. for modem operation)
OP4, OP5 DTR ’Data Terminate Ready’:
default handshake control for
setting receiver input
Table 1.4.6: Functions of the DUART68681 Ports
VME-ASIO16 Rev. 1.7 26