USB4640 datasheet(41/64 Pages) SMSC

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High Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller

Datasheet

SMSC USB4640/USB4640i

Revision 1.0 (06-09-09)

DATASHEET

8.4.4.3

E0h: Product ID (LSB)

8.4.4.4

E1h: Product ID (MSB)

8.4.4.5

E2h: Device ID (LSB)

8.4.4.6

E3h: Device ID (MSB)

8.4.4.7

E4h: Configuration Data Byte 1 (CFG_DAT_BYT1)

BIT

NAME

DESCRIPTION

7:0

PID_LSB

Least Significant Byte of the Product ID. This is a 16-bit value that the vendor

can assign that uniquely identifies this particular product.

BIT

NAME

DESCRIPTION

7:0

PID_MSB

Most Significant Byte of the Product ID. This is a 16-bit value that the vendor

can assign that uniquely identifies this particular product.

BIT

NAME

DESCRIPTION

7:0

DID_LSB

Least Significant Byte of the Device ID. This is a 16-bit device release

number in BCD (binary coded decimal) format.

BIT

NAME

DESCRIPTION

7:0

DID_MSB

Most Significant Byte of the Device ID. This is a 16-bit device release

number in BCD format.

BIT

NAME

DESCRIPTION

SELF_BUS_PWR

Self- or Bus-Power: Selects between self- and bus-powered operation.

The hub is either self-powered (draws less than 2 mA) or bus-powered

(limited to 100 mA maximum power prior to being configured by the host

controller).

When configured as a bus-powered device, the SMSC hub consumes less

than 100 mA of current prior to being configured. After configuration, the bus-

powered SMSC hub (along with all associated hub circuitry, any embedded

devices if part of a compound device, and 100 mA per externally available

downstream port) must consume no more than 500 mA of current. The

current consumption is system dependent, and the OEM must ensure that

the USB 2.0 specifications are not violated.

When configured as a self-powered device, <1 mA of current is consumed

and all ports are available, with each port being capable of sourcing 500 mA

of current.

‘0’ = Bus-powered operation

‘1’ = Self-powered operation

Reserved

HS_DISABLE

Hi-Speed Disable: Disables the capability to attach as either a Hi-/Full-Speed

device, and forces attachment as Full-Speed only (i.e. no Hi-Speed support).

‘0’ = Hi-/Full-Speed

‘1’ = Full-Speed-Only (Hi-Speed disabled!)

USB4640 Datenblatt(PDF) 41 Page - SMSC Corporation

USB4640 Datenblatt(HTML) 41 Page - SMSC Corporation

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