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Signal generating circuit and related method for activating physical channel between host and peripheral device

A technology for signal generation circuits and peripheral devices, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problem that BSY cannot be obtained by the host, and achieve the effect of saving time and manufacturing costs

Inactive Publication Date: 2008-10-01
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be noted that, according to the SATA specification, when the peripheral device is busy, BSY is set; and when the peripheral device is ready to transmit a data word (data word) or a data byte between the host and the peripheral device (data byte) so that when DRQ is set, BSY cannot be obtained by the host temporarily
[0005] Therefore, when the Register FIS cannot be transmitted from the peripheral device to the host, the host will not be able to request any action from the peripheral device, and the peripheral device will be considered invalid

Method used

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  • Signal generating circuit and related method for activating physical channel between host and peripheral device
  • Signal generating circuit and related method for activating physical channel between host and peripheral device
  • Signal generating circuit and related method for activating physical channel between host and peripheral device

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Embodiment Construction

[0030] Please note that for the sake of simplification, the host and the peripheral devices in the following embodiments are devices conforming to the SATA standard, and the instruction command is described by FIS. Moreover, the peripheral device is exemplified by an optical drive. However, this is not meant to limit the present invention, and the present invention can be applied to any serial transmission channel between the host and the peripheral device, such as USB, SAS and so on.

[0031] Please refer to Figure 4 , Figure 4 is a block diagram of the optical drive 120 according to the first embodiment of the present invention. The optical drive 120 includes a SATA device port 121 , a microprocessor 122 , a non-volatile memory 123 , and a signal generating circuit 125 . The signal generating circuit 125 includes a trigger generator 124 and a signal generator 128 . Moreover, the optical drive 120 is also coupled to the host 110 through a SATA cable. The host 110 has a...

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Abstract

A signal generating circuit of a peripheral device for sending a frame information structure (FIS) to a host via a serial transmission channel to change a busy bit representing the state of the peripheral device. The signal generating circuit includes a trigger generator and a signal generator. The trigger generator generates a trigger signal by monitoring a control signal of the signal generating circuit. The signal generator, coupled to the trigger generator, generates the indication according to the trigger signal.

Description

technical field [0001] The present invention relates to a signal generating circuit for activating a physical channel between a host computer and a peripheral device and related methods thereof, and particularly relates to activating a physical channel between a host computer and a peripheral device without using a microprocessor in the peripheral device Signal generation circuit and related method. Background technique [0002] The Serial Advanced Technology Attachment (SATA) specification is a transmission interface used between a host computer and a peripheral device (such as a hard disk drive or an optical drive). Moreover, such specifications are gradually replacing advanced technology attachment (ATA) specifications. SATA defines two pairs of differential signals to replace the forty or eighty parallel signals of the known ATA specification. The SATA specification reduces the number of circuit pins, has a lower operating voltage, and increases transmission efficiency...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/00
CPCG06F3/0634G06F3/0617G06F3/0632G06F3/0677
Inventor 吕柏青曾宝庆刘铨
Owner MEDIATEK INC