NCR Microelectronics 53C94
The 53C94, 53C95 and 53C96 are high performance CMOS devices conforming to the ANSI standard, X3.l3I-I986, for Small Computer Systems Interface (SCSI). They are a super-set of the 53C90 with additional commands, registers and an I8-bit DMA interface (two parity bits). The microprocessor bus width is 8-bits, and may be configured to be separate from the I8-bit DMA bus (called dual bus) or share the lower half (called single bus).| Part No. | 53C94 |
|---|---|
| Datasheet | 53C94 Download |
| Manufacturer | NCR Microelectronics |
| Description | Advanced SCSI Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The 53C94 has on-chip 48 rnA drivers for single ended transmission, while the 53C95 provides control signals for external differential trancei verso The 53C96 offers both single ended and differential mode in a single 100 pin Quad Flat Pack (QFP) package. The 53C90 Family reduces protocol overhead by performing common SCSI algorithms, or sequences, in response to a single command. The 53C94 and 53C95 will operate at sustained data tansfer rates up to 5 MB/S in synchronous mode and 5 MB/S in asynchronous mode. Refer to Data Transfer Rate.FEATURES
● ANSI X3.13I-I986 compatible● On-chip 48 rnA drivers
● Control logic for differential tranceivers
● Parity generation, optional checking
● Parity pass-thru
● Software compatible with 53C90
● SCSI-2 tagged -queuing
● I8-bit DMA interface
● Dual bus or single bus processor and DMA
● Multiplexed or nonmultiplexed address/data
● Burst mode
● 20 MB/S DMA interface
● Up to 5 MB/S asynchronous SCSI
● Up to 5 MB/S synchronous SCSI
● Low power CMOS
● 84-pin PLCC and 100-pin QFP Figure 1.
