News
 

Bookmark and Share

(2) 

While virtually all consumer hard disk drives that are shipped today are designed to work with Serial ATA interconnection, there is growing demand for external HDDs that should support interconnection standards like USB 2.0. While there is a number of single-chip Parallel ATA-to-USB converters, up to today the world did not have a single Serial ATA-to-USB 2.0 chip, announced by UK-based Oxford Semiconductor.

Oxford Semiconductor’s OXU921S is a highly integrated bridge chip that simplifies implementation of external hard disk and optical disk drives for both PC and Mac platforms. The OXU921S features an integral SATA PHY, USB2.0 PHY and ARM7TDMI processor. The USB mass storage device firmware provided with the chip ensures its full compatibility with standard operating system drivers.

The bridge chip’s embedded USB2.0 Link and PHY support full and high-speed modes and offer backwards compatibility with USB1.1. The OXU921S has a 6KB cache for USB data, facilitating a data transmission speed up to 480Mbps, or about 60GB. The integrated SATA core and PHY operate at 1.50GHz, resulting in a disk interface data rate of 150MB/s.

The use of ARM7 processor, with 8KB close coupled RAM, means users are free to create highly differentiated external SATA drive enclosures through custom firmware development. 12 GPIOs further extend the device’s capability. An embedded UART is provided for use in code development and debug and firmware can be programmed through the USB port to help simplify manufacturing and in-field updates.

To optimise the firmware development process, the OXU921S shares a common software base with other Oxford Semiconductor devices and is backed by a full development kit and evaluation board. The OXU921S is available for sub-$5.5 in quantities exceeding 100 thousand units.

The company did not say whether any major HDD maker plans to adopt the Serial ATA-to-USB 2.0 chip.

Discussion

Comments currently: 2
Discussion started: 02/16/05 10:32:26 PM
Latest comment: 02/17/05 07:28:19 AM

[1-1]

1. 
"... facilitating a data transmission speed up to 480Mbps, or about 60GB"
Isn't that supose to be 60 MBps ?
0 0 [Posted by:  | Date: 02/16/05 10:32:26 PM]
Reply

[1-1]

Add your Comment




Related news

Latest News

Wednesday, October 8, 2014

8:52 pm | Lisa Su Appointed as New CEO of Advanced Micro Devices. Rory Read Steps Down, Lisa Su Becomes New CEO of AMD

Thursday, August 28, 2014

12:22 pm | AMD Has No Plans to Reconsider Recommended Prices of Radeon R9 Graphics Cards. AMD Will Not Lower Recommended Prices of Radeon R9 Graphics Solutions

Wednesday, August 27, 2014

9:09 pm | Samsung Begins to Produce 2.13GHz 64GB DDR4 Memory Modules. Samsung Uses TSV DRAMs for 64GB DDR4 RDIMMs

Tuesday, August 26, 2014

6:41 pm | AMD Quietly Reveals Third Iteration of GCN Architecture with Tonga GPU. AMD Unleashes Radeon R9 285 Graphics Cards, Tonga GPU, GCN 1.2 Architecture

Monday, August 25, 2014

6:05 pm | Chinese Inspur to Sell Mission-Critical Servers with AMD Software, Power 8 Processors. IBM to Enter Chinese Big Data Market with the Help from Inspur