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SMSC USB2640, USB2640i 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

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

7.3.3.22E9h: Port Disable For Bus-Powered Operation

BIT
NUMBER	BYTE NAME	DESCRIPTION

7:0	PORT_DIS_BP	Port Disable Bus-Powered: Disables 1 or more ports. ‘0’ = port is available,
		‘1’ = port is disabled.
		During Self-Powered operation, this register selects the ports which will be
		permanently disabled. The ports are unavailable to be enabled or
		enumerated by a Host Controller. The ports can be disabled in any order,
		the internal logic will automatically report the correct number of enabled ports
		to the USB host and will reorder the active ports in order to ensure proper
		function.
		When using the internal default option, the PRT_DIS[1:0] pins will disable the
		appropriate ports.
		Bit 7= Reserved
		Bit 6= Reserved
		Bit 5= Reserved
		Bit 4= Reserved
		Bit 3= 1; Port 3 is disabled
		Bit 2= 1; Port 2 is disabled
		Bit 1= 1; Port 1 is disabled
		Bit 0 is Reserved, always = ‘0’

7.3.3.23EAh: Max Power For Self-Powered Operation

BIT
NUMBER	BYTE NAME	DESCRIPTION

7:0	MAX_PWR_SP	Max Power Self_Powered: Value in 2 mA increments that the hub consumes
		from an upstream port (VBUS) when operating as a self-powered hub. This
		value includes the hub silicon along with the combined power consumption
		(from VBUS) of all associated circuitry on the board. This value also includes
		the power consumption of a permanently attached peripheral if the hub is
		configured as a compound device, and the embedded peripheral reports 0
		mA in its descriptors.
		Note: The USB 2.0 Specification does not permit this value to exceed 100
		mA.

7.3.3.24EBh: Max Power For Bus-Powered Operation

BIT
NUMBER	BYTE NAME	DESCRIPTION

7:0	MAX_PWR_BP	Max Power Bus_Powered: Value in 2 mA increments that the hub consumes
		from an upstream port (VBUS) when operating as a bus-powered hub. This
		value includes the hub silicon along with the combined power consumption
		(from VBUS) of all associated circuitry on the board. This value also includes
		the power consumption of a permanently attached peripheral if the hub is
		configured as a compound device, and the embedded peripheral reports 0
		mA in its descriptors.

SMSC USB2640/USB2641	41	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