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SMSC USB2640, USB2640i 7.3.3.33F4h: MS/SD Clock Limit, 7.3.3.34F5h: Reserved, 7.3.3.35F6h: Reserved, FCh-FFh:, 7.3.4I2C EEPROM, BIT, BIT, TYPE, BITS, BYTE, Note:, NUMBER, NUMBER

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

7.3.3.33F4h: MS/SD Clock Limit

	BYTE NAME	TYPE	BITS		DESCRIPTION

		Upper	7:4	0: MS - 60	MHz -- Default, no limit
		Nibble Bits		1: MS - 40	MHz
				2: MS - 20	MHz
	MS_SD_CLK_LIM			3: MS - 15	MHz

		Lower	3:0	0: SD/MMC - 48 MHz
		Lower	3:0	0: SD/MMC - 48 MHz
		Nibble Bits		1: SD/MMC - 24 MHz
				2: SD/MMC - 20 MHz
				3: SD/MMC - 15 MHz

7.3.3.34F5h: Reserved

BIT
NUMBER	BYTE NAME	DEFAULT VALUE	DESCRIPTION

7:0	Reserved	66h	Reserved.

7.3.3.35F6h: Reserved

BIT
NUMBER	BYTE NAME	DEFAULT VALUE	DESCRIPTION

7:0	Reserved	00h	Reserved for media usage.

7.3.3.36FCh-FFh:Non-volatile Storage Signature

BYTE
NUMBER	BYTE NAME	STRING	DESCRIPTION

7:0	NVSTORE_SIG	“ATA2”	This signature is used to verify the validity of the
			data in the configuration area. The signature must be
			set to ‘ATA2’ for USB2640/USB2641.

7.3.4I2C EEPROM

The I2C EEPROM interface implements a subset of the I2C Master Specification (Please refer to the Philips Semiconductor Standard I2C-Bus Specification for details on I2C bus protocols). The device’s I2C EEPROM interface is designed to attach to a single “dedicated” I2C EEPROM, and it conforms to the Standard-mode I2C Specification (100 kbit/s transfer rate and 7-bit addressing) for protocol and electrical compatibility.

Note: Extensions to the I2C Specification are not supported.

The device acts as the master and generates the serial clock SCL, controls the bus access (determines which device acts as the transmitter and which device acts as the receiver), and generates the START and STOP conditions.

SMSC USB2640/USB2641	47	Revision 2.0 (10-03-08)
	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