USB5537B Datasheet, PDF (56/79 Pages) Microchip Technology – 7-Port SS/HS USB Hub Controller

USB5537B
5.6.42 USB PORT 1 VARISENSE REGISTER
TABLE 5-58: USB PORT 1 VARISENSE REGISTER
PHY_P1_SENSE
(0X64CC)
USB Port 1 Varisense Register
Bit
Name
R/W
Description
7:3
Reserved
R
Reserved
2:0
HS_SQ_TUNE[2:0] R/W Squelch Tune
3’b000: Nominal 100mV Trip Point
3’b001: Decrease by 12.5mV
3’b010: Decrease by 25mV
3’b011: Decrease by 37.5mV
3’b100: Decrease by 50mV
3’b101: Decrease by 62.5mV
3’b110: Increase by 25mV
3’b111: Increase by 12.5mV
5.6.43 USB3 PORT 1 LINK STATE
TABLE 5-59: USB3 PORT 1 LINK STATE
SS_P1_STATE
(0X65C0)
USB3 Port1 Link State
Bit
Name
R/W
Description
7:4
LINK_STATE
R
3
Reserved
R
2:0
LINK_SUB_STATE R
Refer to Table 5-74, "USB 3.0 Link States" for more details.
Reserved
Refer to Table 5-74, "USB 3.0 Link States" for more details.
5.6.44 USB PORT 2 BOOST REGISTER
TABLE 5-60: USB PORT 2 BOOST REGISTER
HS_P2_BOOST
(0X68CA)
USB Port 2 Boost Register
Bit
Name
R/W
Description
7:3
Reserved
2:0
HS_BOOST
R/W Reserved
R/W HS Output Current.
3’b000: Nominal
3’b001: Decrease by 5%
3’b010: Increase by 10%
3’b011: Increase by 5%
3’b100: Increase by 20%
3’b101: Increase by 15%
3’b110: Increase by 30%
3’b111: Increase by 25%
DS00001682C-page 56
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