Datasheet

LAN9514/LAN9514I
DS00002306A-page 24  2009-2016 Microchip Technology Inc.
2Eh Hub Controller Max Current (Self) Register (HCMCS)
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 100mA.
01h
2Fh Hub Controller Max Current (Bus) Register (HCMCB)
Value in 2 mA 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 does NOT include the power consumption of a permanently
attached peripheral if the hub is configured as a compound device.
00h
30h Power-on Time Register (PWRT)
The length of time that it 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.
32h
31h Boost_Up Register (BOOSTUP)
Refer to Table 3-7, “Boost_Up Register (BOOSTUP) Format,” on page 30 for details.
00h
32h Boost_5 Register (BOOST5)
Refer to Table 3-8, “Boost_3:2 Register (BOOST32) Format,” on page 30 for details.
00h
33h Boost_4:2 Register (BOOST42)
Refer to Table 3-9, “Boost_4:2 Register (BOOST42) Format,” on page 31 for details.
00h
34h RESERVED 00h
35h Port Swap Register (PRTSP)
Swaps the Upstream and Downstream USB DP and DM pins for ease of board
routing to devices and connectors.
0 = USB D+ functionality is associated with the DP pin and D- functionality is
associated with the DM pin.
1 = USB D+ functionality is associated with the DM pin and D- functionality is
associated with the DP pin.
Bit 7 = RESERVED
Bit 6 = RESERVED
Bit 5 = 1; Port 5 DP/DM is swapped
Bit 4 = 1; Port 4 DP/DM is swapped
Bit 3 = 1; Port 3 DP/DM is swapped
Bit 2 = 1; Port 2 DP/DM is swapped
Bit 1 = RESERVED
Bit 0 = 1; Upstream Port DP/DM is swapped
00h
TABLE 3-3: HUB CONFIGURATION (CONTINUED)
EEPROM
Offset
Description Default