Timeout Values

12 Timings

The timing of BSY and DRQ in Status Register are shown in Table 180Table 181.

The other timings are described in HDS7210xxCLA3yz / HUA7220xxCLA33z / HCS5C10xxCLA382 / HCS7210xxCLA3y2 / HDS5C10xxCLA382 Final Functional Specification.

FUNCTION			INTERVAL		START	STOP	TIMEOUT

Power On		Device Busy after Power On			Power On	The device sets BSY(=0) and	31 sec
and						RDY(=1) to the Status
COMRESET						Register and sends a Register
						FIS to the host.

Software		Device Busy after Software			The host asserts SRST(=1)	The Host sets BSY(=1) to the	400 ns
Reset		Reset			in the Device Control	Status Register.
					Register and sends a
					Register FIS to the Device.
		Device Ready after			The host asserts SRST(=1)	The device sets BSY(=0) and	31 sec
		Software Reset			to the Device Control	RDY(=1) to the Status
					Register and sends a	Register and requests to send
					Register FIS to the Device.	a Register FIS to the host.
					Then the host negates
					SRST(=0) to the Device
					Control Register and sends a
					Register FIS to the Device.
COMRESET		Device	Ready	after	COMRESET Signal asserted	The device sets BSY(=0) and	31 sec
		COMRESET				RDY(=1) to the Status
						Register and sends a Register
						FIS to the Host.
Non-Data		Device Busy after a Register			The host sets proper values	The host sets BSY(=1) to the	400 ns
command		FIS to issue a command			in the registers and sends a	Status register
					Register FIS
		A Register FIS to report			The host sets BSY(=1) to the	The device sets the status of	30 sec
		Command Complete			Status Register	the command to the Status
						Register and sends a Register
						FIS to the host
PIO Data In		Device Busy after a Register			The host sets proper values	The host sets BSY(=1) to the	400 ns
command		FIS to issue a command			in the registers and sends a	Status Register
					Register FIS
		PIO SETUP FIS for data-in			The host sets BSY(=1) to the	The device sets BSY(=0) and	30 sec
		transfer			Status Register	DRQ(=1) to the Status
						Register and sends a PIO
						SETUP FIS to the host.
		Device Busy after data-in			A PIO SETUP FIS is	The host sets BSY(=1) to the	400 ns
		transfer			transferred to the host.	Status Register

PIO Data		Device Busy after a Register			The host sets proper values	The host sets BSY(=1) to the	400 ns
Out		FIS to issue a command			in the registers and sends a	Status Register
Command					Register FIS
		Device Busy after data-out			The host sends a Data FIS to	The host sets BSY(=1) to the	400 ns
		transfer			the device.	Status Register

		PIO SETUP FIS for data-out			The host sets BSY(=1) to the	The device sets BSY(=0) and	30 sec
		transfer			Status Register	DRQ(=1) to the Status
						Register and sends a PIO
						SETUP FIS to the host.
Table 180	Timeout Values

Hitachi hard disk drive specifications

254 HCS721016CLA382, HCS721050CLA382, HCS721025CLA382, HDP725050GLA360, HUA722050CLA330/1 specifications

Hitachi's lineup of hard disk drives, including models such as HDS721075CLA632, HDS721032CLA362, HDS721032CLA662, HDS721050CLA362, and DSDS7210C09EN-04, offers a variety of features catering to different storage needs. These drives are widely recognized for their reliability, performance, and efficiency, making them suitable for both consumer and enterprise applications.

The HDS721075CLA632 model, with a capacity of 750GB, strikes a balance between performance and storage capabilities. It operates at 7200 RPM, ensuring quick access to data while maintaining low latency. Its 32MB cache enhances data transfer rates and improves overall system responsiveness. This HDD is particularly useful for gaming, multimedia, and office applications, allowing users to store a substantial amount of data with quick retrieval times.

The HDS721032CLA362 and HDS721032CLA662 share many similarities and are both designed for budget-conscious consumers. With a capacity of 320GB and a 7200 RPM, they offer efficient storage solutions for everyday tasks. The 32MB cache buffer enables efficient caching of frequently accessed files, providing a smooth experience for users.

Another notable model is the HDS721050CLA362, which features a capacity of 500GB. Like its counterparts, this drive operates at a speed of 7200 RPM and utilizes a 32MB cache, which ensures optimal performance for data-heavy applications. This model stands out for its energy efficiency, resulting in lower operational costs, making it an appealing choice for businesses and energy-conscious consumers alike.

On the other hand, the DSDS7210C09EN-04 is a part of Hitachi's enterprise-oriented offerings. This drive is engineered for demanding applications, featuring advanced technologies such as error recovery controls and enhanced data protection features. With a focus on reliability and performance, the DSDS7210C09EN-04 serves well in server environments and for high-performance computing.

Hitachi's hard drives incorporate various technologies that enhance their performance and durability. Features such as staggered start-up, which gradually powers on the drive, help minimize power surges and increase the longevity of the device. Moreover, Hitachi's commitment to quality ensures that each drive undergoes rigorous testing, guaranteeing functionality and reliability.

Overall, the diverse range of models from Hitachi provides effective solutions for anyone from casual users to enterprises, combining storage capacity with advanced technologies to meet the evolving demands of modern data storage.

12 Timings

FUNCTION

INTERVAL

START

STOP

TIMEOUT

Hitachi hard disk drive specifications

254

HCS721016CLA382, HCS721050CLA382, HCS721025CLA382, HDP725050GLA360, HUA722050CLA330/1 specifications