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PDF PL2775 Data sheet ( Hoja de datos )
| Número de pieza | PL2775 | |
| Descripción | SuperSpeed USB 3.0 to Dual SATA Bridge Controller | |
| Fabricantes | Prolific | |
| Logotipo |  |
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PL2775 SuperSpeed USB 3.0 to Dual
SATA Bridge Controller
Product Datasheet
Document Revision: 1.0
Document Release: January 26, 2011
Prolific Technology Inc.
7F, No. 48, Sec. 3, Nan Kang Rd.
Nan Kang, Taipei 115, Taiwan, R.O.C.
Tel: 886-2-2654-6363
Fax: 886-2-2654-6161
Email: [email protected]
URL: http://www.prolific.com.tw
1 page  
Revised Date:
January 26, 2011
ds_PL2775_v1.0
1.0 Product Overview
1.1 Overview
The PL2775 is a low-power single-chip SuperSpeed USB 3.0 to Dual SATA II compliant bridge IC
controller specially designed for external USB 3.0 dual-port RAID and non-RAID applications. It
supports RAID 0 (striping) and RAID 1 (mirroring) as well as JBOD (Just a Bunch of Disks) and BIG
(single logical disk) mode configurations. The PL2775 can perform seamless protocol transfer
between the USB Host and dual SATA interface storage devices like Hard Disk Drives, Optical Disk
Drives, and Solid-State Drives. SuperSpeed USB has data transfer bandwidth of up to 5Gbps offering
10X performance increase over Hi-Speed USB (480Mbps) while still retaining backward compatibility
and interoperability with all USB 2.0 and USB 1.1 devices, hosts, and hubs. The PL2775 also
integrates a high performance 8-bit microcontroller which can be used to support versatile system
applications such as one button backup, power control, and other USB port features. The PL2775
chip is also implemented according to the USB Bulk-Only Mass Storage Class Specification v1.0.
1.2 Features
High Performance USB 3.0 to Dual SATA Storage Bridge Controller
Supports RAID0 (striping), RAID1 (mirroring), JBOD (Just a Bunch of Disks), and BIG mode
USB 3.0 Specification and USB 2.0 Specification Compliant
o USB-IF SuperSpeed Logo Certified (TID No. 340740018)
o SuperSpeed(5Gbps), Hi-Speed(480Mbps), and Full-Speed(12Mbps)
o USB Mass Storage Class Bulk-Only Transport
Serial ATA Revision 3.0 Specification Compliant
o Embedded SATA PHY and Controller
o SATA Gen2i/Gen2m (3Gbps) and SATA Gen1i/Gen1m (1.5 Gbps)
o Supports SATA Hot Plug
Supports over 2TB and 4KB-sector Hard Drives
Supports USB3.0/USB2.0/SATA Power Saving Management
High Performance Embedded 8-bit Microcontroller
Internal data buffer for downstream and upstream optimized data transfer performance
Firmware update, Vendor/Product ID, and other related configuration information can be
programmed to external Serial EEPROM or SPI serial flash through USB interface.
Generic SPI interface and I2C interface for ICP
14 General Purpose IO (GPIO) pins can be defined for specific functions by external
configuration ROM or through USB interface. Also provides SDK for further applications.
Supports single 30-MHz reference clock
Ultra-low power 1.2V core operating voltage by 0.13um process
Inexpensive LQFP64 package
PL2775 Product Datasheet
-5-
Document Version 1.0
5 Page 
Revised Date:
January 26, 2011
ds_PL2775_v1.0
4.0 External Configuration ROM
4.1 External Configuration ROM
The PL2775 uses external serial memory (EEPROM or Flash) to store the Vendor ID, Product ID,
Device Release Number (in device descriptor), Attributes and Max Power setting (in configuration
descriptor), String Descriptor and some chip operation mode configuration. The external firmware of
PL2775 is also stored in this memory and the maximum size is 46KB by SPI interface or 28KB by I2C
interface. After reset, the firmware in the external memory will be loaded into internal program SRAM.
Two types of serial interface are supported, the one is SPI (Serial Peripheral Interface) and the other
is I2C compatible interface. Both interfaces support master mode only. The PL2775 allows the
following possible configurations:
I2C Serial EEPROM: This option uses I2C serial EEPROM to store chip configuration data and
firmware. Firmware is stored in the EEPROM and will be loaded during system startup.
SPI Serial Flash: This is the recommended option. It behaves the same as the I2C serial memory
with this chip but the transfer speed of SPI interface is faster than I2C interface. The SPI interface
is a four-pin interface but this chip uses only three pins to communicate with. So the DI and DO
are shorted; or better short by a serial 240-ohm resistor.
4.2 Data Structure of External Serial Memory Content
The Configuration ROM is organized as follows:
Address
1:0
3:2
5:4
7:6
8
9
10
15:14
249:16
253:250
255:254
Table 4-1 EEPROM Address and Content
Content
Check Word – 0x067B (predefined constant)
Vendor ID (idVendor field of Device Descriptor)
Product ID (idProduct field of Device Descriptor)
Device Release Number (bdcDevice field of Device Descriptor)
Attributes (bmAttributes field of Configuration Descriptor)
Max Power (MaxPower field of Configuration Descriptor)
Chip operation settings
Reserved
USB String Descriptor Table
GPIO Settings
Miscellaneous
Note
PL2775 Product Datasheet
- 11 -
Document Version 1.0
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet PL2775.PDF ] | |
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