%
%
16
&" #"! !$! #
(98/12/10)
Installed type of firmware Prom’s
A choice out of 2 types is possible, 2 devices in PLCC–Package are re-
quired.
W11 removed: 272048 may be used resulting in 512 kbyte
W11 inserted: 274096 can be used resulting in 1 megabyte firmware
space
Access time is required to be 120 nsec or less
SYSCLK on VME Bus
Jumper W10 connects if inserted the cpu clock to SYSCLK of the VME
Bus.
Ethernet/Cheapernet Configuration
Jumper W2 inserted in position B makes the cheapernet to send a SQE
test sequence, W2 in position A disables the SQE test mode, e.g. if there
is a Repeater connected.
2. 9. 3. Installing DRAM
It is possible to equip the CCU with 16, 32 or 64 Mbyte using 2 of
8–Mbyte DRAM modules (P/N 65173),
16–Mbyte DRAM modules (P/N 66123) or
32–Mbyte DRAM modules (P/N 66124).
The modules have to be inserted as U75 and U76.
Furthermore this needs W7 to be set and the following jumper setting
of W5 position A and B :
Inserted
Jumper in posiĆ
tion A and B of
W5
Corresponding
logic signals
SEL0, SEL1
CU09/10
DRAM
Size
Module Equipment
A,B 0,0
16
Mbyte
2 x 8 Mbyte as U75,U76
A,- 0,1
32
Mbyte
2 x 16 Mbyte as U75,U76
-,- 11
64
Mbyte
2 x 32 Mbyte as U75,U76
Table 9: DRAM configuration
Any installed DRAM is not available if W7 is removed
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