TCI6636K2H Datasheet, PDF (262/362 Pages) Texas Instruments – Multicore DSP+ARM KeyStone II System-on-Chip (SoC)

TCI6636K2H
Multicore DSP+ARM KeyStone II System-on-Chip (SoC)
SPRS835F—October 2013
Table 8-58 USB_PHY_CTL2 Register Field Descriptions (Part 2 of 2)
Bit
15-14
Field
PHY_PC_TXHSXVTUNE
13-10 PHY_PC_TXFSLSTUNE
9-7
PHY_PC_SQRXTUNE
6-4
PHY_PC_OTGTUNE
3
Reserved
2-0
PHY_PC_COMPDISTUNE
End of Table 8-58
Description
Transmitter High-Speed Crossover Adjustment.
Adjusts the voltage at which the DP and DM signals cross while transmitting in HS mode.
11 = Default setting.
10 = +15 mV
01 = -15 mV
00 = Reserved
FS/LS Source Impedance Adjustment.
Adjusts the low- and full-speed single-ended source impedance while driving high.
This parameter control is encoded in thermometer code.
+1 = results in a -2.5% incremental change in threshold voltage level.
-1 = results in a +2.5% incremental change in threshold voltage level.
Any non-thermometer code setting (that is 1001) is not supported and reserved.
Squelch Threshold Adjustment.
Adjusts the voltage level for the threshold used to detect valid high-speed data.
+1 = results in a -5% incremental change in threshold voltage level.
-1 = results in a +5% incremental change in threshold voltage level.
VBUS Valid Threshold Adjustment.
Adjusts the voltage level for the VBUS valid threshold.
+1 = results in a +1.5% incremental change in threshold voltage level.
-1 = results in a -1.5% incremental change in threshold voltage level.
Reserved
Disconnect Threshold Adjustment.
Adjusts the voltage level for the threshold used to detect a disconnect event at the host.
+1 = results in a +1.5% incremental change in the threshold voltage level.
-1 = results in a -1.5% incremental change in the threshold voltage level.
Figure 8-41
31
USB_PHY_CTL3 Register
Reserved
R-0
22
17
16
11
PHY_PC_PCS_TX_DEEMPH_6DB
Reserved
R/W-100000
R-0
Legend: R = Read only; R/W = Read/Write, -n = value after reset
30
29
23
PHY_PC_PCS_TX_SWING_FULL
R/W-1111000
10
5
PHY_PC_PCS_TX_DEEMPH_3P5DB
R/W-010101
4
0
PHY_PC_LOS_LEVEL
R/W-01001
Table 8-59 USB_PHY_CTL3 Register Field Descriptions (Part 1 of 2)
Bit
31-30
29-23
Field
Reserved
PHY_PC_PCS_TX_SWING_FULL
22-17 PHY_PC_PCS_TX_DEEMPH_6DB
Description
Reserved
Tx Amplitude (Full Swing Mode).
Sets the launch amplitude of the transmitter. It can be used to tune Rx eye for compliance.
Tx De-Emphasis at 6 dB.
Sets the Tx driver de-emphasis value when pipeP_tx_deemph[1:0] is set to 10b (according to the PIPE3
specification). This bus is provided for completeness and as a second potential launch amplitude.
262 Device Boot and Configuration
Copyright 2013 Texas Instruments Incorporated
Submit Documentation Feedback