Dram tester control registers, Bit counter, Test sram – Motorola MVME2300 Series User Manual

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Falcon ECC Memory Controller Chip Set

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

Name

CTR32

Operation

READ/WRITE

Reset

0 PL