Curtiss-Wright GT200 VME, Справочник по аппаратуре

Страница: 36 / 58

OPERATION
4.4 User Interfaces
4.4.1 VME Interface
4.4.1.1 VME Slave
The GT200 VME memory appears as a 128 MB VME slave window and supports the
following types of accesses:
•
Address: A16, A24, A32, or A64
•
Data: D8, D16, and D32 Single Cycle Transaction (SCT)
•
Data: D8, D16, and D32 Block Transfers (BLT)
•
Data: D64 Multiple Block Transaction (MBLT)
•
Data: D64 2eVME Asynchronous 2 edge Handshake
•
Data: D64 2eSST Synchronous No Handshake
4.4.1.2 VME System Controller
GT200 VME is configurable to be a VME System Controller by the DIP switches
described in chapter 3. The following System Controller features are supported:
•
VMEbus Arbiter (PRI, RRS, and SGL)
•
IACK Daisy-Chain Driver
•
SYSRESET Driver
•
Global VMEbus Timer – generates BERR* upon bus timeout detection
•
16 MHz System Clock Driver
4.4.1.3 VME CR/CSR
GT200 VME supports accesses to the 512 kilobyte CR/CSR space as defined by the
ANSI/VITA standards for VME64 and VME64x.
Only the upper 4 kilobytes are
supported at this time (These are the internal Tsi148 control registers). Accesses to the
lower 508 kilobytes are not supported and will produce a VME Bus Error. The CR/CSR
space is accessible using the A24 CR/CSR Address Modifier (AM) code. The base
address for the CR/CSR space is configurable using either the Geographical Address or
by the AUTO Slot ID option. These options are selected by the S2
DIP switches
previously described in Chapter 3.
4.4.2 RS-232 Interface
One RS-232 port is provided on an 8-pin RJ-45 connector with the following pin-out:
1. DCD
2. RTS
3. GND
4. Tx
Data
5. Rx Data
6. GND
8 7 6 5 4 3 2 1
Front panel view
7. CTS
8. DTR
Copyright 2005 4-8 GT200 VME Hardware Reference