TVME200 User Manual Issue 1.1.0
Page 9 of 26
3.1 VME A16 Base Address
The VME A16 Base Address of the TVME200 is set by rotary switch S1 and S2.
Rotary switch S1 sets A[15:12] of the VME A16 Base Address.
Rotary switch S2 sets A[11:10] of the VME A16 Base Address.
Figure 3-3 : VME A16 Base Address
The default value for the VME A16 Base Address is 0x6000 (S1=6, S2=0).
The TVME200 requires an address space of 1 Kbytes within the VME A16 address space. Each of the
four IP slots occupies 256 bytes within this 1 Kbytes VME A16 address space.
The address space for each IP is divided into the following areas: IP I/O space, IP ID space and the IP
IRQ and Control Register.
The IP I/O space has a size of 128 bytes. The size of the IP ID space and the IP IRQ and Control
Register depends on the position of switch S3:
With S3 = “0” to “7”, the IP IRQ and Control Registers of the TVME200 are accessible, and the size of
the IP ID space is 64 bytes. The remaining 64 bytes are occupied by the IP IRQ and Control
Registers. If switch S3 = “8” to “F”, the IP IRQ and Control Registers of the TVME200 are not
accessible, and the corresponding address range is added to the IP ID space, resulting in a size of
128 bytes for the IP ID space with S3 = “8” to “F”. This configuration is necessary for IP modules that
require access to the ID Space above the ID PROM.
See figures below for more details.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
