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E2730A VXI RF TUNER
3.3.2 E2730A ADDRESSING
3.3.3 E2730A CONFIGURATION REGISTERS
OPERATION
The E2730A has registers located within 64-byte blocks in the A16
address space. The base address of the E2730A registers is determined by
the unique logical address. This address is set via an eight-position DIP
switch located on the left side panel. Refer to Section 2 for details on
setting the logical address with this switch.
If the switch is set for dynamic configuration (255), the address of the
E2730A is determined by the Resource Manager by reading the tuner's
MODID (module identification) line during the power-up and initialization
routine. The E2730A contains an offset register that can be written to by
the resource manager to define its address. Refer to Section F in the
VXIbus Specification for further details on dynamic configurations.
If the switch is set for static configuration (1-254), the Resource Manager
reads and acknowledges the set address.
At startup, it is the responsibility of the Resource Manager to read the
configuration register of the E2730A (refer to the VXIbus Specification).
The E2730A returns the following data from its configuration register:
Bits:
Contents:
0-11
Manufacturer ID
12,13
Address Space
14,15
Device Class
Bits:
Contents:
0-11
Model Code
12,15
Required Memory
ID Register
Value:
0xFFF
00 (A16/A24)
0x2
Device Type Register
Value:
0x2B6
64k (bytes)
16
(Message Based)
16
3-3
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