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USB2524 데이터시트(PDF) 27 Page - SMSC Corporation

부품명 USB2524
상세설명  USB MultiSwitchTM Hub
PDF  57 Pages
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제조업체  SMSC [SMSC Corporation]
홈페이지  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB2524 데이터시트(HTML) 27 Page - SMSC Corporation

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USB MultiSwitchTM Hub
Datasheet
SMSC USB2524
27
Revision 1.91 (08-22-07)
DATASHEET
7.1.4.14
Register 0Dh: Max Power For Bus Powered Operation (Reset = 0x00)
7.1.4.15
Register 0Eh: Hub Controller Max Current For Self Powered Operation (Reset = 0x00)
7.1.4.16
Register 0Fh: Hub Controller Max Current For Bus Powered Operation (Reset = 0x00)
7.1.4.17
Register 10h: Power-On Time (Reset = 0x00)
7.1.4.18
Register 11h: Language ID High (Reset = 0x00)
7.1.4.19
Register 12h: Language ID Low (Reset = 0x00)
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.
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
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
HC_MAX_C_BP
Hub Controller Max Current Bus-Powered: Value in 2mA 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. This
value will NOT include the power consumption of a permanently attached
peripheral if the hub is configured as a compound device.
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
POWER_ON_TIME
Power On Time: The length of time that is takes (in 2 ms intervals) from the
time the host initiated power-on sequence begins on a port until power is good
on that port. System software uses this value to determine how long to wait
before accessing a powered-on port.
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)



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