Dram tester control registers, Bit counter, Test sram – Motorola MVME2300 Series User Manual
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Falcon ECC Memory Controller Chip Set
3
DRAM Tester Control Registers
!
Caution
The tester should not be used by software. The trun and tsse bits (bits 0
and 1 of the register at address $FEF80060) should never be set.
32-Bit Counter
CTR32
CTR32 is a 32-bit, free-running counter that increments
once per microsecond if the CLK_FREQUENCY register
has been programmed properly. Notice that CTR32 is
cleared by power-up and local reset. It does not exist in
Revision 1 of Falcon.
Note
When the system clock is a fractional frequency, such as
66.67MHz, CTR32 will count at a fractional amount faster or
slower than 1MHz, depending on the programming of the
CLK_FREQUENCY register.
Test SRAM
(Deleted)
Address
$FEF80100
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Name
CTR32
Operation
READ/WRITE
Reset
0 PL