1. Introduction
6
FEATURES
•
STD 32 bus compatible
•
PC-AT compatible register set
•
4 Mbytes/second backplane transfer rate
•
Integrated 2½ inch support (ZT 8952)
•
Integrated 3½ inch support (ZT 8953)
•
Standalone (non-integrated) support (ZT 8952-0)
•
Frontplane interrupt capability
•
16-bit/8-bit dynamic data transfer capability
•
Burned in at 55º Celsius and tested
•
STD 32 compliance
I/O Slave: SA16, SA8 - I, IXL, IXP
•
Two-year warranty
The figure "
Functional Block Diagram
" illustrates the functional blocks of the ZT 8952. A
description of each block follows.
IDE Hard Disk
Either a 2½ inch drive (ZT 8952) or a 3½ inch drive may be mounted directly to the
interface to provide a compact, modular unit for STD applications. The drive may also
be remotely mounted and cabled. The cable length is restricted to 18 inches. The
interface is available via a 2 mm right angle female header or a 0.1 inch right angle
male header.
Bus Interface Logic
The ZT 8952 supports both 16-bit and 8-bit data transfers on the STD bus by packing
and unpacking the 16-bit IDE data on behalf of the IDE drive. For 16-bit STD 32 CPUs
the ZT 8952 will provide 16-bit data directly, allowing the maximum transfer rate of
4 Mbytes/second.
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