MM-6390 Data Sheet

A 512 Mbyte, 80 Mbyte/sec Transfer Rate, Dual-Port VME/VME64/VSB DRAM Memory Module

FEATURES:

• Capacity: 32M, 64M, 128M, 256M, 512M bytes
• Cycle/Access Time (nsec): Block Transfer (BLT/MBLT) Write: 100/30, Read: 100/30
• Data Transfer Rate: VME64: 80 Mbytes/sec, VME/VSB: 40 Mbytes/sec
• Compatible with: VMEbus Rev D and VSBbus Rev C with A32/A24/D64/D32/D16/D8 (UAT) for VME/VME64 and A32/D32 for VSB
• Block Transfer (BLT): 256 bytes for VME, MBLT of 2 Kbytes for VME64, and 1 Kbytes for VSB
• Parity: Parity generation and checking for error detection on each byte Write-Wrong parity for diagnostics under software control
• Module selection: on 1 Mbyte boundaries, switch-selectable for lower and upper limits on each bus.
• VMEbus Control Status Register (CSR): for parity reporting and control
• Lifetime Warranty

DESCRIPTION:

A high-speed, dual-port, single card slot, high-density memory module, the MM-6390D provides up to 512 Mbytes for VME/VME64/VSB systems. It is intended for high performance applications employing Block Transfer at data rates of 80 Mbytes/sec. It also supports sequential access (BLT/MBLT) of 256/2K bytes on the VME/VME64 and 1 Kbytes on the VSB bus.

The Control Status Register (CSR), located in the short I/O address space, stores and reads byte-wide parity errors detected on the VME/VSB buses. The other bits enable Write-Wrong parity for diagnostics, disable the VME-port and determine whether the memory is CACHEable on the VSB bus.

Parity generation and checking are provided for each byte; parity status is stored and transmitted via BERR*.

Reliability is ensured by burn-in and running memory diagnostics that check operation for 48 hours while temperature-cycling boards from 0 to 60 degrees (Celsius). Also, reliability is backed up by Micro Memory's Lifetime Warranty.

SPECIFICATIONS:

Capacity:

32M, 64M, 128M, 256M, 512M bytes

Cycle/Access Time (nsec):

Block Transfer (BLT/MBLT)-Write: 100/30, Read: 100/30

Data Transfer Rate:

VME64: 80 Mbytes/sec

VME/VSB: 40 Mbytes/sec

Address:

32 bits for VMEbus

32 bits multiplexed with 32 data bits for the VSBbus

Data In/Data Out:

8, 16, 32, 64 bits (UAT) for VMEbus

32-bit slave for VSBbus

Sequential Access:

Block transfer (BLT/MBLT) of 256/2K bytes, 1K bytes on the VSBbus

Address Modifiers:

AM0-AM5 decoded by socketed PLD with the following codes:

A24: 39, 3A, 3D and 3E

A32: 09, 0A, 0D and 0E

A24 with MBLT: 38, 3C

A24 with BLT: 3B, 3F

A32 with BLT: 0B, 0F

with MBLT: 08, 0C

Parity Checking:

Byte-wide parity generation and checking; parity output stored and transmitted via CSR, Write-Wrong parity for diagnostics

Control Status Register (CSR):

Read/Write, 8 bits wide, jumper-selectable in VME short I/O space (A16) with VMEbus low limit address tracking

CSR Format:

D0 Enable Parity Ou

D1 Write-Wrong Parity

D2 Memory CACHEable for VSB

D6 VMEbus Disable

D7 Parity Error

Others: Don't Care

Interface:

VME (VITA 1-1995) and VSB Rev C

Modes of Operation:

Read, write, read-modify-write, and refresh

Memory Selection:

Two independent memory ports, switch-selectable on 1 Mbyte (100000H) boundaries for each port by setting the upper and lower limits

Operating Temperature:

0 to 60 degrees (Celsius)

Storage Temperature:

-40 to +85 degrees (Celsius)

Relative Humidity:

Up to 95% without condensation

Power Requirements:

5V @ 5.5A