MM-6320D

MM-6320D

A Dual Port, High Speed, VME/VSB/VMX32 Compatible

Features

Capacity: 4, 8, 12, 16M

VME Delta Series Compatible

Cycle / Access: 275/200 nsec

VMEbus Control Status Register (CSR) (CSR) for parity reporting

Block mode transfers for sequential access (UAT) for both ports

Parity generation and checking for error detection on each byte

Module Selection on 1MB boundaries, jumper-selectable for the lower and upper limits of each bus

Temperature-cycled and burned-in during memory diagnostics

Six-bit address modifiers support user and supervisory modes

Dual ports: VME/VMX32/VSB; bus-compatible with A32/A24, D32/D16/D8
(UAT) for VMEbus and multiplexed A32/D32 (UAT) for VMX32/VSB bus

Description

The MM-6320D provides up to 16MB of DRAM. It supports byte, word, long word, unaligned transfers (UAT), sequential access block mode transfers (BLT) of 256 bytes for the VMEbus and 64KB for the VSB bus.

The MM-6320D is compatible with the MVME130/131, MVME135/136 and MVME141 microcomputers. It is also compatible with the MVME204/224 memory module. Furthermore, the MM-6320D is compatible with VME Delta* Series systems.

A Control Status Resister (CSR), located in the short I/O address space, stores and reads byte-wide parity errors detected on the VMEbus. By setting a CSR bit, the VMEbus port can be disabled, which transforms the VMX32/VSB bus into a private port.

Reliability is ensured by burn-in and running memory diagnostics that check operation for 48 hours while temperature-cycling boards between 0 and 60°C.

MM-6320D Specifications

	Capacity : 4M, 8M, 12M, 16MB
	Cycle/Access Time : Non Block Mode: 275/200 nsec from Data Strobe; Fast Write = 105 nsec; Block Mode: 275/170 nsec from Data Strobe
	Address : 32 bits for VMEbus; 32 bits multiplexed with 32 data bits for the VMX32/VSB bus
	Data In/Data Out : 8, 16, 32-bit (UAT)
	Sequential Access : Block mode transfer of 256 bytes on VMEbus, 64KB on VSB bus
	Address Modifiers : 6-bit, decoded by socketed IFL, to support user and supervisory modes
	Parity Checking : Byte-wide parity generation and checking. Parity output stored and transmitted via CSR.
	Control Status Register (CSR) : Jumper-selectable, occupies one location in VME I/O space (A16) CSR Format : D0 Enable Parity Out D1 Write-Wrong Parity D2 Memory Cacheable D6 Disable VMEbus D7 Parity Error Others: Don't Care
	Interface : VME/VMX32/VSB bus-compatible (48 mA drivers)
	Modes of Operation : Read, write, read-modify-write, refresh Refresh : Hidden refresh one cycle (275 nsec) every 15 usec
	Memory Selection : Two independent memory banks, jumper-selectable on 1MB (10000H) boundaries for each port by setting the upper and lower limits in the 4GB address field
	Operating Temperature : 0 to +60°C
	Storage Temperature : -40 to +85°C
	Relative Humidity : Up to 95% without condensation
	Power Requirements : + 5V (Fully-Populated), Standby: 4.4 A, Operate: 4.8 A