Register Map - Xycom XVME-113 User Manual

Bit
D15 Memtypelb
D14 Memtypela
D13 Memsizelb
D12 Memsizela
D11 Memtype2b
D10 Memtype2a
D9 Memsize2b
D8 Memsize2a
D7-D0 Real Time Clock Bits
3.3

REGISTER MAP

Table 3-3, on the following page, shows the address map of the 16 RTC registers. The registers are accessed on odd-byte
addresses, beginning at the base address of the XVME-113 in the VMEbus Short I/O space.
Table 3-2. Data Bit Definitions
Determines Memory Type Bank 1 (upper bit)
Determines Memory Type Bank 1 (lower bit) 00=EPROM 01=SRAM 10=FLASH/EEPROM
Determines Memory Size Bank 1 (upper bit)
Determines Memory Size Bank 1 (lower bit) 00=128K x 8 01=256K x 8 10=512K x 8 11=1024K
x 8
Determines Memory Type Bank 2 (upper bit)
Determines Memory Type Bank 2 (lower bit) 00=EPROM 01=SRAM 10=FLASH/EEPROM
Determines Memory Size Bank 2 (upper bit)
Determines Memory Size Bank 2 (lower bit) 00=128K x 8 01=256K x 8 10=512K x 8 11=1024K
x 8
XVME-113 RAM/ROM Memory Module
Bit Location
October 1992
3-3