ProDAQ 3040 User Manual - Bustec

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3040-XX-UM ProDAQ 3040 6U VME64x to C-Size VXI Adapter User Manual Page 14 of 34 Copyright, © 2002 Bustec Production Ltd.
ProDAQ 3040 6U VME64x to C-Size VXI Adapter User Manual 3040-XX-UM 2. Installation and Configuration 2.1 Preparing the VME Board To use a VME board in a VXIbus system, simply connect the board to the adapter using the P1 and P2 connector of the VME board and the female connectors J300 and J301 of the ProDAQ 3040 Adapter. The adapter supports automatic system controller detection on the VME side. None the less this feature might not work with some boards, so that it could be necessary to configure the VME board to be fixed either system controller or not, depending on the usage in the VXIbus system. If the VME board features a VME slave for registers or local memory, the adapter must be set up to support a VXI to VME address translation window. Please refer to section 2.2.2 how to configure the adapter for this. The adapter supports, in accordance to the VXI standard, one window, which can translate a A24 or A32 access on the VXI side to a A16 or A24 or A32 access on the VME side (see section 1.3 and 1.4). 2.2 Configuring the ProDAQ 3040 Adapter The ProDAQ 3040 Adapter can be configured by writing to the VXIbus configuration registers located in A16 address space of the VXIbus(see section 3). Do be able to write to those registers, the adapter must be configured either to use a static logical address or the resource manager must be used to assign dynamically a logical address to the adapter (see section 2.2.1 for details). Any master on the VXIbus, as well as a VME master located on the adapter (because of the transparent forwarding of VME master cycles to the VXIbus done by the adapter), can then access the configuration registers. If the system supports the VISA standard, a session can be opened to the adapter using the standard viOpen() call, as for example (using logical address 2): ViSession rm_session; ViSession session; ViStatus status; status = viOpenDefaultRM (&rm_session); status = viOpen (rm_session, "VXI0::2::INSTR", VI_NULL, VI_NULL, &session); The register offsets as specified in Table 1 can then directly be used in the viIn() and viOut() calls to access the configuration registers: Copyright, © 2002 Bustec Production Ltd. Page 15 of 34
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ProDAQ 3040 User Manual - Bustec

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