System for supporting both serial and parallel storage devices on a connector
First Claim
1. An interface circuitry for connecting a data storage device to a computer, said interface circuitry comprising:
- a parallel data line for transferring parallel data between the data storage device and the computer;
a multi-mode, parallel/serial data line for selectively transferring parallel or serial data between the data storage device and the computer;
a switching circuit, connected to said parallel/serial data line, having first and second selectable modes of operation, said switching circuit being connectable to the computer; and
a data transfer mode selection circuit connected to said switching circuit, said mode selection circuit for sending a parallel mode selection signal to said switching circuit for placing said switching circuit in said first mode of operation, wherein parallel data is transferable between the storage device and the computer over both the parallel data line and the parallel/serial data line, said mode selection circuit for sending a serial mode selection signal to said switching circuit for placing said switching circuit in said second mode of operation, wherein serial data is transferable between the storage device and the computer over said parallel/serial data line.
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Accused Products
Abstract
A method and system that permit a modular computer and a data storage device to interface through common pins whether the data storage device is a parallel or serial device. The serial data lines and some of the parallel data lines from the computer are routed through a switching circuit to common pins at the interface, which is attached to the data storage device. If data from the computer is sent in parallel form through parallel data lines to a parallel storage device, most of the parallel data lines are connected to dedicated parallel pin connectors, while the remainder of the parallel data lines are routed through the switching circuit to common interface pins. If the storage device is a serial device, the switching circuit sends the serial data from the computer to the serial data storage device via the common interface pins.
61 Citations
16 Claims
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1. An interface circuitry for connecting a data storage device to a computer, said interface circuitry comprising:
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a parallel data line for transferring parallel data between the data storage device and the computer;
a multi-mode, parallel/serial data line for selectively transferring parallel or serial data between the data storage device and the computer;
a switching circuit, connected to said parallel/serial data line, having first and second selectable modes of operation, said switching circuit being connectable to the computer; and
a data transfer mode selection circuit connected to said switching circuit, said mode selection circuit for sending a parallel mode selection signal to said switching circuit for placing said switching circuit in said first mode of operation, wherein parallel data is transferable between the storage device and the computer over both the parallel data line and the parallel/serial data line, said mode selection circuit for sending a serial mode selection signal to said switching circuit for placing said switching circuit in said second mode of operation, wherein serial data is transferable between the storage device and the computer over said parallel/serial data line. - View Dependent Claims (2, 3, 4, 5)
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6. A computer comprising:
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a central processing complex (CPC) including a central processing unit, a memory and a memory and Input/Output (I/O) controller;
a data storage device;
an interface circuitry coupled between said data storage device and said CPC, said interface circuitry including;
a parallel data line for transferring parallel data between said data storage device and said CPC;
a multi-mode, parallel/serial data line for selectively transferring parallel or serial data between the data storage device and said CPC;
a switching circuit, connected to said parallel/serial data line, having first and second selectable modes of operation; and
a data transfer mode selection circuit connected to said switching circuit, said mode selection circuit for sending a parallel mode selection signal to said switching circuit for placing said switching circuit in said first mode of operation, wherein parallel data is transferable between the storage device and said CPC over both the parallel data line and the parallel/serial data line, said mode selection circuit for sending a serial mode selection signal to said switching circuit for placing said switching circuit in said second mode of operation, wherein serial data is transferable between said storage device and said CPC over said parallel/serial data line. - View Dependent Claims (7, 8, 9, 10)
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11. A docking station for use with a computer having a central processing complex (CPC) including a central processing unit, a memory and a memory and Input/Output (I/O) controller;
- a computer interface circuitry connectable between an external data storage device and said CPC, said computer interface circuitry including a parallel data line for transferring parallel data between said external data storage device and said CPC, a multi-mode, parallel/serial data line for selectively transferring parallel or serial data between said external data storage device and said CPC;
a switching circuit, connected to said parallel/serial data line, having first and second selectable modes of operation, said docking station comprising;
a storage device interface connectable to said external data storage device, said storage device interface being connectable to said computer interface circuitry by a plurality of conductors; and
a data transfer mode selection circuit connectable to said switching circuit, said data transfer mode selection circuit for sending a parallel mode selection signal to said switching circuit for placing said switching circuit in said first mode of operation, wherein parallel data is transferable between said external data storage device and said CPC over both said parallel data line and said parallel/serial data line, said data transfer mode selection circuit for sending a serial mode selection signal to said switching circuit for placing said switching circuit in said second mode of operation, wherein serial data is transferable between said external data storage device and said CPC over said parallel/serial data line, wherein said docking station is capable of interfacing said external data storage device to said computer whether said external data storage device is a serial data storage device or a parallel data storage device. - View Dependent Claims (12, 13, 14, 15, 16)
- a computer interface circuitry connectable between an external data storage device and said CPC, said computer interface circuitry including a parallel data line for transferring parallel data between said external data storage device and said CPC, a multi-mode, parallel/serial data line for selectively transferring parallel or serial data between said external data storage device and said CPC;
Specification