USB2640-HZH-02

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1. Describe

Microchip USB2640-HZH-02 is a high-speed hub that complies with the USB 2.0 standard for USB port expansion with an additional mass storage peripheral controller. The controller allows reading/writing of the following series of popular flash media:

  - Secure Digital™ (SD)

  - Multimedia Card (MMC)

  - xD-Picture CardTM (xD)1

  - Memory Stick(MS)

USB2640/USB2641 is a fully integrated single-chip solution that provides integrated flash card media reader/writer functions for USB expansion and ultra-high performance operations. The average sustained transfer rate may exceed 35 MB/s2.

2. Feature

    1. Compatible with the following flash media cards Specifications: SD 2.0 / MMC 4.2 / MS 1.43 / MSPro 1.02 / MS-PRO-HG 1.01 / MS-Duo 1.10 / xD 1.2

    2. Support a single external 3.3 V power supply; Internal regulator provides 1.8 V internal core voltage for additional bill of materials and energy saving

    3. The transaction converter (TT) in the hub supports full-speed and low-speed operation Peripherals

    4. 9 K RAM | 64K on-chip ROM

    5. Enhanced EMI suppression and ESD protection performance

    6. Onboard 24 MHz crystal oscillator drive circuit

    7. Optional external 24 MHz clock input

    8. 8051 8-bit microprocessor

    9. Hub and flash media reader/writer configuration Single source: external I2C ROM or external SPI ROM

        - Use external configuration internal code I2C electrically erasable programmable read-only memory

        - Support external code using SPI Flash Electrically erasable programmable read-only memory

        - Customizable supplier ID, product ID, language ID

  10. Update EEPROM via USB

  11. 48-pin QFN RoHS compliant package (7 x 7 mm)

3. PIN CONFIGURATIONS

4. Application

    1. Desktop and mobile PC

    2. Personal mobile device

    3. Printer

    4. GPS navigation system

    5. Media player/viewer

    6. Consumer audio and video

    7. Set-top box

5. Function focus

    1. Ultra-fast hub controller with internal connections Flash media reader/writer and 2 exposed downstream ports for external peripheral expansion

    2. Flash media reader/writer adopts multiplexing Optimized use of card interface Single card inserted into the combination socket

    3. Hardware-controlled data flow architecture, suitable for everyone Self-mapping media

    4. Optional support through external firmware access SPI interface

    5. Port map

        - Flexible port mapping and port disable Sequencing supports multiple platforms design

    6. Port swap

        - Programmable USB differential pair pin position simplifies PCB design by aligning USB signal traces directly to the connector

    7. PHYBoost

        - Programmable USB transceiver driver Strength restore signal integrity

6. Detailed overview

Microchip USB2640/USB2641 is an integrated USB 2.0 compatible high-speed hub for USB port expansion, with additional large-capacity only large-capacity storage peripheral controllers. This multi-format flash media controller and USB hub Combo has three downstream ports: one port is dedicated to the internally connected ultra-fast flash media reader and writer and two exposed downstream ports can be used for external peripheral expansion. Microchip USB2640/USB2641 is an ultra-fast, OEM configurable hub controller IC with three downstream ports for Embedded USB solution. USB2640/USB2641 will be connected to the upstream port as a full-speed hub or full-speed/high-speed hub. The hub supports low-speed, full-speed, and high-speed (if operating as a high-speed hub) downstream devices on all enabled downstream ports. All the resistors required on the USB port are integrated into the hub. This includes all series termination resistors on D+ and D– pins and all required pull-down and pull-up resistors on D+ and D– pins. The overcurrent detection input is used for downstream-facing ports with internal pull-up resistors. The USB2640/USB2641 includes programmable features such as:

1. PortMap - which provides flexible port mapping and disable sequences. The downstream ports of a USB2640/USB2641

hub can be reordered or disabled in any sequence to support multiple platform designs with minimum effort. For any port that is disabled, the USB2640/USB2641 automatically reorders the remaining ports to match the USB host controller’s port numbering scheme.

2. PortSwap - which adds per-port programmability to USB differential-pair pin locations. PortSwap allows direct alignment of USB signals (D+/D-) to connectors avoiding uneven trace length or crossing of the USB differential signals on the PCB

3. PHYBoost - which enables four programmable levels of USB signal drive strength in downstream port transceivers.PHYBoost attempts to restore USB signal integrity that has been compromised by system level variables such as poor PCB layout, long cables, etc. 

7. Hardware Features

    1. Single chip flash media controller

    2. Transaction translator (TT) in the hub supports operation of FS and LS peripherals

    3. Full power management with individual or ganged power control of each downstream port

    4. Optional support for external firmware access via SPI interface

        - 30 MHz or 60 MHz operation support

        - Single bit or dual bit mode support

        - Mode or mode 3 SPI support Compliant with the following flash media card specifications:

    5. Secure Digital 2.0 / MultiMediaCard 4.2

        - SD 2.0, HS-SD, HC-SD

        - TransFlash™ and reduced form factor media

        - 1/4/8 bit MMC 4.2

    6. MMC streaming mode support

    7. Memory Stick 1.43

    8. Memory Stick Pro Format 1.02

    9. Memory Stick Pro-HG Duo Format 1.01

        - Memory Stick, MS Duo, HS-MS, MS Pro-HG, MS Pro

  10. Memory Stick Duo 1.10

  11. xD-Picture Card 1.2 (USB2640 only)

  12. On board 24 MHz crystal driver circuit

  13. Optional external 24 MHz clock input

        - Must be used with an external resistor divider to provide a 1.8 V signal

  14. 8051 8-bit microprocessor

        - 60 MHz - single cycle execution

        - 64 KB ROM; 9 KB RAM

  15. Internal regulator for 1.8 V core operation

  16. Optimized pinout improves signal flow, easing implementation and allowing for improved signal integrity treatment

8. Software Features

    1. Optimized for low latency interrupt handling

    2. Hub and flash media reader/writer configuration from a single source: External I2C ROM or external SPI ROM

    3. EEPROM update via USB

    4. Please see the USB2640/USB2641 Software Release Notes for additional software features