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SMSC USB2502 5.2.3.9EEPROM Offset B(h) - Max Power For Self Powered Operation, 5.2.3.10EEPROM Offset C(h) - Max Power For Bus Powered Operation

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2-Port USB 2.0 Hub Controller

Datasheet

5.2.3.9EEPROM Offset B(h) - Max Power For Self Powered Operation

BIT
NUMBER	BIT NAME	DESCRIPTION

7:0	MAX_PWR_SP	Max Power Self_Powered: Value in 2mA 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
		0mA in its descriptors.
		Note: The USB 2.0 Specification does not permit this value to exceed
		100mA
		A value of 50 (decimal) indicates 100mA.

5.2.3.10EEPROM Offset C(h) - Max Power For Bus Powered Operation

BIT
NUMBER	BIT NAME	DESCRIPTION

7:0	MAX_PWR_BP	Max Power Bus_Powered: Value in 2mA 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
		0mA in its descriptors.
		A value of 50 (decimal) indicates 100mA.

5.2.3.11EEPROM Offset D(h) - Hub Controller Max Current For Self Powered Operation

BIT
NUMBER	BIT NAME	DESCRIPTION

7:0	HC_MAX_C_SP	Hub Controller Max Current Self-Powered: Value in 2mA 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 does NOT include the power consumption of a permanently
		attached peripheral if the hub is configured as a compound device.
		Note: The USB 2.0 Specification does not permit this value to exceed
		100mA
		A value of 50 (decimal) indicates 100mA, which is the default value.

SMSC USB2502	23	Revision 2.3 (08-27-07)
	DATASHEET

Contents

USB2502 2-PortUSB 2.0 Hub Controller PRODUCT FEATURES ORDER NUMBERS: Table of Contents Chapter List of Tables List of Figures Chapter 1 General Description 1.1OEM Selectable Features Chapter 2 Pin Table 2-Port Page Chapter 3 Pin Configuration 2-PortHub Page Chapter 4 2-PortHub Block Diagram Page Page Page Page Chapter 5 Functional Block Description 5.12-PortHub 5.1.1Hub Configuration Options 5.1.1.5High-SpeedDisable 5.1.1.6EOP Disable 5.1.1.7Current Sensing 5.1.1.8Compound Device 5.1.1.9Non-RemovableDevice 5.1.2VBus Detect 5.2EEPROM Interface 5.2.1I2C EEPROM 5.2.2In-CircuitEEPROM Programming 5.2.3EEPROM DATA 5.2.3.1EEPROM Offset 1:0(h) - Vendor ID 5.2.3.2EEPROM Offset 3:2(h) - Product ID EEPROM Offset 5:4(h) - Device ID 5.2.3.4EEPROM Offset 6(h) - CONFIG_BYTE_1 5.2.3.5EEPROM Offset 7(h) - CONFIG_BYTE_2 5.2.3.6EEPROM Offset 8(h) - Non-RemovableDevice 5.2.3.7EEPROM Offset 9(h) - Port Disable For Self Powered Operation 5.2.3.8EEPROM Offset A(h) - Port Disable For Bus Powered Operation 5.2.3.9EEPROM Offset B(h) - Max Power For Self Powered Operation 5.2.3.10EEPROM Offset C(h) - Max Power For Bus Powered Operation EEPROM Offset D(h) - Hub Controller Max Current For Self Powered Operation 5.3SMBus Slave Interface 5.3.1Bus Protocols 5.3.2Invalid Protocol Response Behavior 5.3.3General Call Address Response 5.3.4Slave Device Time-Out 5.3.5Stretching the SCLK Signal 5.3.6SMBus Timing 5.3.7Bus Reset Sequence 5.3.8SMBus Alert Response Address 5.3.9.1Register 00h: Status/Command (Reset = 0x00) 5.3.9.2Register 01h: Vendor ID (LSB) (Reset = 0x00) Register 02h: Vendor ID (MSB) (Reset = 0x00) Register 03h: Product ID (LSB) (Reset = 0x00) Register 04h: Product ID (MSB) (Reset = 0x00) Register 05h: Device ID (LSB) (Reset = 0x00) Register 06h: Device ID (MSB) (Reset = 0x00) 5.3.9.9Register 08h: Configuration Data Byte 2 (Reset = 0x00) 5.3.9.10Register 09h: Non-RemovableDevice (Reset = 0x00) 5.3.9.11Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00) 5.3.9.12Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00) 5.3.9.13Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00) 5.3.9.14Register 0Dh: Max Power For Bus Powered Operation (Reset = 0x00) 5.3.9.17Register 10h: Power-OnTime (Reset = 0x00) 5.3.9.18Undefined Registers 5.4Default Configuration Option: 5.5Default Strapping Options: 5.6Reset 5.6.1External Hardware RESET_N 5.6.1.2RESET_N for EEPROM Configuration 5.6.1.3RESET_N for SMBus Slave Configuration 5.6.2USB Bus Reset Chapter 6 XNOR Test Chapter 7 DC Parameters 7.1Maximum Guaranteed Ratings 7.2Recommended Operating Conditions Page Page Chapter 8 AC Specifications 8.1Oscillator/Clock 8.1.1SMBus Interface: 8.1.2I2C EEPROM: 8.1.3USB Chapter 9 Package Outlines