CY7C960 Datasheet, PDF (1/10 Pages) Cypress Semiconductor – Low Cost VMEbus Interface Controller Family

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CY7C960
CY7C961
Features
• 80-Mbyte-per-second block transfer rates
• All VME64 transactions provided, including A64/D64,
A40/MD32 transfers
• Auto Slot ID
• CR/CSR space
• All standard (Rev C) VMEbus transactions implemented
• VMEbus Interrupter
• No local CPU required
• Programmable from VMEbus, serial PROM, or local bus
• DRAM controller, including refresh
• On-chip DMA controller
• Local I/O controller
• Flexible VMEbus address scheme
• User-configured VMEbus response
• 64-pin TQFP, 10x10mm (CY7C960)
• 100-pin TQFP, 14x14mm (CY7C961)
Low Cost VMEbus Interface
Controller Family
Functional Description
The CY7C960 Slave VMEbus Interface Controller provides the
board designer with an integrated, full-featured VME64 inter-
face. This 64-pin device can be programmed to handle every
transaction defined in the VME64 specification. The CY7C961
is based upon the CY7C960: additional features include Re-
mote Master capability whereby the CY7C961 can be com-
manded to move data as a VMEbus master. The CY7C961 is
packaged in a 100-pin outline.
The CY7C960 contains all the circuitry needed to control large
DRAM arrays and local I/O circuitry without the intervention of
a local CPU. There are no registers to read or write, no com-
plex command blocks to be constructed in memory. The
CY7C960 simply fetches its own configuration parameters
during the power-on reset period. After reset the CY7C960
responds appropriately to VMEbus activity and controls local
circuitry transparently.
CY7C960 Logic Block Diagram
AM [5:0]
SYSRESET*
CLK
AS*
DS0*
DS1*
DTACK*
WRITE*
IRQ*
IACK*
IACKIN*
IACKOUT*
REGION [3:0]
REGION/
AM TABLE
POWER-ON
RESET
GENERATOR
CY7C964 CONTROLLER
LOCAL ADDRESS
CONTROLLER
TIMING
GENERATOR
CHIP SELECT
OUTPUT PATTERN
TABLE
VME CONTROL
INTERFACE
VME INTERRUPT
INTERFACE
REFRESH
CONTROLLER
DRAM
CONTROLLER
DATABYTE
LANE
DECODER
DATA BYTE
ENABLE
CONTROLLER
LOCAL
CONTROL
CIRCUIT
LA [7:1]
L WORD
CS[5:0]
DBE [3:0]
LACK*
LDEN*
PREN*
SWDEN*
R/W
c960–1
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
December 1994 – Revised December 4, 1997