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USB251XB 데이터시트(PDF) 26 Page - Microchip Technology

부품명 USB251XB
상세설명  USB 2.0 Hi-Speed Hub Controller
PDF  57 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB251XB 데이터시트(HTML) 26 Page - Microchip Technology

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USB251xB/xBi
DS00001692D-page 26
 2022 Microchip Technology Inc. and its subsidiaries
5.1.15
REGISTER 0EH: HUB CONTROLLER MAX CURRENT FOR SELF-POWERED OPERATION
5.1.16
REGISTER 0FH: HUB CONTROLLER MAX CURRENT FOR BUS-POWERED OPERATION
5.1.17
REGISTER 10H: POWER-ON TIME
5.1.18
REGISTER 11H: LANGUAGE ID HIGH
5.1.19
REGISTER 12H: LANGUAGE ID LOW
5.1.20
REGISTER 13H: MANUFACTURER STRING LENGTH
Bit Number
Bit Name
Description
7:0
HC_MAX_C_SP
Hub Controller Max Current Self-Powered: the 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 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
100 mA
A value of 50 (decimal) indicates 100 mA, which is the default value.
Bit Number
Bit Name
Description
7:0
HC_MAX_C_BP
Hub Controller Max Current Bus-Powered: the value in 2 mA increments that
the hub consumes from an upstream port (VBUS) when operating as a bus-
powered hub. This value will include the hub silicon along with the combined
power consumption (from VBUS) of all associated circuitry on the board.
Note:
This value will not include the power consumption of a permanently
attached peripheral if the hub is configured as a compound device.
A value of 50 (decimal) would indicate 100 mA, which is the default value.
Bit Number
Bit Name
Description
7:0
POWER_ON_TIME
Power-On Time: the length of time that it takes (in 2 ms intervals) from the
time the host initiated the power-on sequence on a port until the port has
adequate power.
Bit Number
Bit Name
Description
7:0
LANG_ID_H
USB Language ID: upper 8 bits of a 16-bit ID field
Bit Number
Bit Name
Description
7:0
LANG_ID_L
USB Language ID: lower 8 bits of a 16-bit ID field
Bit Number
Bit Name
Description
7:0
MFR_STR_LEN
Manufacturer String Length: with a maximum string length of 31 characters
(when supported).



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