USB MultiSwitchTM Hub
Datasheet
7.1.4.14
Register 0Dh: Max Power For Bus Powered Operation (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.
7.1.4.15
Register 0Eh: Hub Controller Max Current For Self Powered Operation (Reset = 0x00)
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
7.1.4.16
Register 0Fh: Hub Controller Max Current For Bus Powered Operation (Reset = 0x00)
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.
7.1.4.17
Register 10h: Power-On Time (Reset = 0x00)
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.
7.1.4.18
Register 11h: Language ID High (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
LANG_ID_H
USB LANGUAGE ID (Upper 8 bits of a 16 bit ID field)
7.1.4.19
Register 12h: Language ID Low (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
LANG_ID_L
USB LANGUAGE ID (lower 8 bits of a 16 bit ID field)
SMSC USB2524
Revision 1.91 (08-22-07)
DATA2S7HEET
SMSC [ SMSC CORPORATION ]
