USB2504 datasheet(18/42 Pages) MICROCHIP

18 / 42 page

USB2504/USB2504A

DS000002250A-page 18

 2007 - 2016 Microchip Technology Inc.

5.2.3.7

EEPROM Offset 9(h) - Port Disable For Self Powered Operation

5.2.3.8

EEPROM Offset A(h) - Port Disable For Bus Powered Operation

5.2.3.9

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

5.2.3.10

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

Bit Number

Bit Name

Description

7:0

PORT_DIS_SP

Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port is

available, ‘1’ = port is disabled.

Bit 7= Reserved

Bit 6= Reserved

Bit 5= Reserved

Bit 4= 1; Port 4 is disabled.

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’

Bit Number

Bit Name

Description

7:0

PORT_DIS_BP

Port Disable Bus-Powered: Disables 1 or more contiguous ports. ‘0’ = port is

available, ‘1’ = port is disabled.

Bit 7= Reserved

Bit 6= Reserved

Bit 5= Reserved

Bit 4= 1; Port 4 is disabled.

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’

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.

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.

USB2504 bảng dữ liệu(PDF) 18 Page - Microchip Technology

USB2504 bảng dữ liệu(HTML) 18 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

bảng dữ liệu tải về

Link URL