USB82640
The USB82640 offers a versatile, cost-effective and energy-efficient hub controller with 2 downstream USB2.0 ports and a Secure Digital/Memory Stick flash media interface. The flash media interface can support sustained transfer rates exceeding 35 MB/s, if the flash media, SDIO client and host support those rates.
The USB82640 offers a versatile, cost-effective and energy-efficient hub controller with 2 downstream USB 2.0 ports and a Secure Digital/Memory Stick flash media interface. The flash media interface can support sustained transfer rates exceeding 35 MB/s, if the flash media, SDIO client and host support those rates.
The USB82640 is designed for applications that demand low power and a small footprint without compromising performance. Offering a high level of interoperability, the USB82640 allows system designers the flexibility of independent access to a wide selection of flash media and additional downstream USB access ports.
The USB82640 consists of USB 2.0 device transceivers with 2-port hub functionality, a fast 8051 microprocessor with Secure Digital/Memory Stick interfaces in a single, fully-integrated chip. It offers USB expansion as well as a flash media read/write interface capable of ultra high performance operation. Various programmable features, including SMSC's unique PortMap, PortSwap and PHYBoost, are designed to aid system designers in simplifying PCB layout and optimizing bill-of-material cost.
产品特性- Ultra fast flash media reader/writer with two exposed Hi-Speed downstream ports for external peripheral expansion
- Supports Secure Digital™ (SD) and SD High Capacity™ (SDHC), MultiMediaCard™ (MMC) and Memory Stick® (MS), MS PRO™ and MS PRO-HG™ cards
- Fully compatible with the USB 2.0 specification
- Specifically designed, fabricated, tested, characterized and qualified for automotive applications
- Service and support
- Built to more exacting requirements than AEC-Q100
- PortMap: Flexible port mapping and port disable sequence supports multiple platform designs
- PortSwap: Programmable ULSB differential-pair pin locations ease PCB design by aligning USB signal traces directly to connectors
- PHYBoost: Programmable USB transceiver drive strength for recovering signal integrity due to compromised system environment
- External and internal memory support for software customization
- Enhanced OEM configuration options available through an external I²C or SPI flash memory
- Customizable Vendor ID, Product ID and Device ID
- Integrated 3.3 V to 1.8 V regulator
- Enhanced ESD protection performance
- 48-pin (7 x 7 mm), QFN lead-free, RoHS compliant package
- Temperature range: -40 °C to +85 °C
| 技术参数|
Parameter Name
Value
| Value | |
Description
Automotive-Grade USB 2.0 Hub and Flash Media Card Controller Combo
|
Automotive-Grade USB 2.0 Hub and Flash Media Card Controller Combo
| |
Upstream Port
USB 2.0
|
USB 2.0
| |
USB Speed
High Speed
|
High Speed
| |
Downstream Ports
2
|
2
| |
ROM I/F
I2C, SPI
|
I2C, SPI
| |
Op Voltage (V)
3.3
|
3.3
| |
Integrated Flash Media Reader
SD, SDHC, MMC, MS, MS PRO, MS PRO-HG
|
SD, SDHC, MMC, MS, MS PRO, MS PRO-HG
| |
Port Map
Yes
|
Yes
| |
Port Swap
Yes
|
Yes
| |
PHY Boost
Yes
|
Yes
| |
Temp. Range Min.
-40
|
-40
| |
Temp. Range Max.
85
|
85
|
|
文档资料
|
| AN 26.2 - Implementation Guidelines for Microchip's USB 2.0 and USB 3.0 Hub Devices | AppNote | 08/11/2015 | 1203KB |  |
| AN26.21 - USB Device Design Checklist | AppNote | 08/10/2015 | 386KB | |
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