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SMSC USB2640, USB2640i 7.4Default Configuration Option:, 7.5Reset, 7.3.4.1Implementation Characteristics, 7.3.4.2Pull-UpResistor, 7.5.2External Hardware RESET_N

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Ultra Fast USB 2.0 Multi-Format Flash Media Controller/USB Hub Combo

7.3.4.1Implementation Characteristics

The device will only access an EEPROM using the Sequential Read Protocol.

7.3.4.2Pull-Up Resistor

The circuit board designer is required to place external pull-up resistors (10 kΩ recommended) on the SDA/SMBDATA & SCL/SMBCLK/CFG_SELO lines (per SMBus 1.0 Specification, and EEPROM manufacturer guidelines) to Vcc in order to assure proper operation.

7.3.5In-Circuit EEPROM Programming

The EEPROM can be programmed via ATE by pulling RESET_N low (which tri-states the device’s EEPROM interface and allows an external source to program the EEPROM).

7.4Default Configuration Option:

The SMSC device can be configured via its internal default configuration. Please see Section 7.3.2, "EEPROM Data Descriptor" for specific details on how to enable default configuration.

Please refer to Table 7.1 for the internal default values that are loaded when this option is selected.

7.5Reset

There are two different resets that the device experiences. One is a hardware reset (either from the internal POR reset circuit or via the RESET_N pin) and the second is a USB Bus Reset.

7.5.1Internal POR Hardware Reset

All reset timing parameters are guaranteed by design.

7.5.2External Hardware RESET_N

A valid hardware reset is defined as assertion of RESET_N for a minimum of 1 μs after all power supplies are within operating range. While reset is asserted, the device (and its associated external circuitry) consumes less than 500 μA of current from the upstream USB power source.

Assertion of RESET_N (external pin) causes the following:

1.All downstream ports are disabled, and PRTCTL power to downstream devices is removed.

2.The PHYs are disabled, and the differential pairs will be in a high-impedance state.

3.All transactions immediately terminate; no states are saved.

4.All internal registers return to the default state (in most cases, 00h).

5.The external crystal oscillator is halted.

6.The PLL is halted.

Revision 2.0 (10-03-08)	48	SMSC USB2640/USB2641
	DATASHEET

Contents

USB2640/USB2641 Ultra Fast USB 2.0 Multi-Format Flash Media Controller/USB Hub Combo Datasheet Page Table of Contents Page List of Tables List of Figures Chapter 1 Overview 1.1Device Features 1.2OEM Selectable Features Chapter 2 Acronyms Chapter 3 Pin Configurations Figure 3.2 USB2641 48-PinQFN Chapter 4 Pin Tables 4.148-PinTables Table 4.2 USB2641 48-PinTable SECURE DIGITAL / MEMORY STICKINTERFACE (14 PINS) DIGITAL POWER, NO CONNECTS (9 PINS) Diagrams Block 5 Chapter Page Chapter 6 Pin Descriptions 6.1USB2640/USB2641 Pin Descriptions Table 6.1 USB2640/USB2641 Pin Descriptions (continued) MEMORY STICK INTERFACE SECURE DIGITAL / MULTIMEDIACARD INTERFACE USB INTERFACE Note: SPI INTERFACE Page MISC DIGITAL / POWER / GROUND 6.2Buffer Type Descriptions 6.3Port Power Control USB2640 USB2641 6.4ROM BOOT Sequence Chapter 7 Configuration Options 7.1Hub 7.1.1.1Power Switching Polarity 7.2Card Reader 7.3System Configurations 7.3.2EEPROM Data Descriptor Table Internal Flash Media Controller Configurations REG ADDR REGISTER NAME Table 7.1 Internal Flash Media Controller Configurations (continued) Table 7.2 Hub Controller Configurations 7.3.2.10h-19h:USB Serial Number Option 7.3.2.21Ah-1Bh:USB Vendor ID Option 7.3.2.31Ch-1Dh:USB Product ID Option 7.3.2.41Eh-21h:USB Language Identifier Option 7.3.2.522h-5Dh:USB Manufacturer String Length 7.3.2.65Eh-99h:USB Product String Length 7.3.2.79Ah: USB BmAttribute (1 byte) 7.3.2.89Bh: USB MaxPower (1 byte) 7.3.2.99Ch-9Fh:Attribute Byte Descriptions 7.3.2.10A4h-A5h:LUN Power Configuration 7.3.2.11A8h: LED Blink Interval (1 byte) 7.3.2.12A9h: Blink Duration (1 byte) 7.3.3.1AAh-B0h:Lun 0 Identifier String 7.3.3.2B1h-B7h:Lun 1 Identifier String 7.3.3.3B8h-BEh:Lun 2 Identifier String 7.3.3.4BFh-C5h:Lun 3 Identifier String 7.3.3.5C6h-CDh:Inquiry Vendor String 7.3.3.6CEh-D2h:Inquiry Product String 7.3.3.7D3h: Dynamic Number of Luns 7.3.3.8D4h-D7h:Lun to Device Mapping 7.3.3.9D8h-DAh:Reserved 7.3.3.10DBh-DDh:Reserved 7.3.3.11DEh: Vendor ID (LSB) 7.3.3.12DFh: Vendor ID (MSB) 7.3.3.13E0h: Product ID (LSB) 7.3.3.14E1h: Product ID (MSB) 7.3.3.15E2h: Device ID (LSB) 7.3.3.16E3h: Device ID (MSB) 7.3.3.17E4h: Config Data Byte 1 (CFG_DAT_BYT1) 7.3.3.18E5h: Config Data Byte 2 (CFG_DAT_BYT2) 7.3.3.19E6h: Config Data Byte 3 (CFG_DAT_BYT3) 7.3.3.20E7h: Non-RemovableDevice 7.3.3.21E8h: Port Disable For Self-PoweredOperation 7.3.3.22E9h: Port Disable For Bus-PoweredOperation 7.3.3.23EAh: Max Power For Self-PoweredOperation 7.3.3.24EBh: Max Power For Bus-PoweredOperation 7.3.3.25ECh: Hub Controller Max Current For Self-PoweredOperation 7.3.3.26EDh: Hub Controller Max Current For Bus-PoweredOperation 7.3.3.27EEh: Power-OnTime 7.3.3.28EFh: Boost_Up 7.3.3.29F0h: Boost_3:0 7.3.3.30F1h: Port Swap 7.3.3.31F2h: Port Remap 7.3.3.32F3h: Port Remap 7.3.3.33F4h: MS/SD Clock Limit 7.3.3.34F5h: Reserved 7.3.3.35F6h: Reserved FCh-FFh: 7.3.4.1Implementation Characteristics 7.4Default Configuration Option: 7.5Reset 7.5.2.1RESET_N for EEPROM Configuration Chapter 8 Pin Reset States 8.1Pin Reset States Table 8.2 USB2640 Pin Reset States (continued) Table 8.3 USB2641 Pin Reset States Table 8.3 USB2641 Pin Reset States (continued) Chapter 9 DC Parameters 9.1Maximum Guaranteed Ratings 9.2Operating Conditions 9.3DC Electrical Characteristics Input Leakage O12 Type Buffer I/O12, I/O12PU & I/O12PD Type Buffer IO-U 9.4Capacitance Chapter 10 AC Specifications 10.1Oscillator/Clock (C1 + CS1) x (C2 + CS2) CL (C1 + CS1 + C2 + CS2) Chapter 11 Package Outline Chapter 12 GPIO Usage