Samsung S5PC100 User Manual page 865

USB2.0 HS OTG
OPHYTUNE
txfslstune
txrisetune
txhsxvtune
txvreftune
8.10 -22
Bit
[10:7] FS/ LS Pull-Up Resistance Adjustment. This bit field
adjusts the low-and full-speed pull-up resistance based
on nominal power, voltage, and temperature.
• 1111 : -2.5%
• 0111 : Design default
• 0011 : +2.5%
• 0001 : +5%
• 0000 : +7.5%
[6] HS Transmitter Rise/ Fall Time Adjustment. This bit field
adjusts the rise/ fall times of the high speed waveform.
• 1 : -8%
• 0 : Design default
[5:4] Transmitter High-Speed Crossover adjustment. This bit
field adjusts the voltage at which the DP and DM signals
cross while transmitting in HS mode.
• 11 : The crossover voltage is increased by 15mV
• 10 : The crossover voltage is increased by 30mV
• 01 : Default setting
• 00 : Reserved
[3:0] HS DC Voltage Level Adjustment. This bit field adjusts
the voltage to which the high-speed DC level is tuned.
• 1111 : +8.75%
• 1110 : +7.5%
• 1101 : +6.25%
• 1100 : +5%
• 1011 : +3.75%
• 1010 : +2.5%
• 1001 : +1.25%
• 1000 :
• 0111 : -1.25%
• 0110 : -2.5%
• 0101 : -3.75%
• 0100 : -5%
• 0011 : Design default
• 0010 : -7.5%
• 0001 : -8.75%
• 0000 :
Description
S5PC100 USER'S MANUAL (REV1.0)
R/W Reset Value
R/W
R/W
R/W
R/W
4'b0111
1'b0
2'b01
4'b0011