| Differential Receiver (RXP, RXN) |
| VDIFF-pp |
Input differential voltage swing |
AC-coupled differential peak-to-peak signal |
100 |
|
1200 |
mVpp |
| VCM-RX |
Common-mode voltage bias in the receiver (DC) |
|
|
3.3 |
|
V |
| ZRX-DIFF |
Differential input impedance (DC) |
Present after a SuperSpeed USB device is detected on TXP/TXN |
72 |
91 |
120 |
Ω |
| ZRX-CM |
Common-mode input impedance (DC) |
Present after a SuperSpeed USB device is detected on TXP, TXN |
18 |
22.8 |
30 |
Ω |
| ZRX-HIGH-IMP-DC-POS |
Common-mode input impedance with termination disabled (DC) |
Present when no SuperSpeed USB device is detected on TXP, TXN. Measured over the range of 0-500 mV with respect to GND. |
25 |
35 |
|
kΩ |
| VRX-LFPS-DET-DIFF-pp |
Low Frequency Periodic Signaling (LFPS) Detect Threshold |
Below the minimum is squelched |
100 |
|
300 |
mVpp |
| Differential Transmitter (TXP, TXN) |
| VTX-DIFF-PP |
Transmitter differential voltage swing (transition-bit) |
OS = Low, No load |
|
930 |
|
mVpp |
| OS = High, No load |
|
1300 |
|
| VTX-DE-RATIO |
Transmitter de-emphasis |
DE = Floating, OS = Low |
|
-3.5 |
|
dB |
| CTX |
TX input capacitance to GND |
At 2.5 GHz |
|
1.25 |
|
pF |
| ZTX-DIFF |
Differential impedance of the driver |
|
75 |
93 |
125 |
Ω |
| ZTX-CM |
Common-mode impedance of the driver |
Measured with respect to AC ground over 0-500 mV |
18.75 |
|
31.25 |
Ω |
| ITX-SC |
TX short circuit current |
TX ± shorted to GND |
|
|
60 |
mA |
| VCM-TX |
Common-mode voltage bias in the transmitter (DC) |
|
1.2 |
|
2.5 |
V |
| VCM-TX-AC |
AC common-mode voltage swing in active mode |
Within U0 and within LFPS |
|
|
100 |
mVpp |
| VTX-IDLE-DIFF -AC-pp |
Differential voltage swing during electrical idle |
Tested with a high-pass filter |
0 |
|
10 |
mVpp |
| VTX-CM-DeltaU1-U0 |
Absolute delta of DC CM voltage during active and idle states |
Restrict the test condition to meet 100 mV |
|
|
100 |
mV |
| VTX-idle-diff-DC |
DC electrical idle differential output voltage |
Voltage must be low pass filtered to remove any AC component |
0 |
|
12 |
mV |
| Differential Transmitter (TXP, TXN) |
| tR, tF |
Output rise, fall time see Figure 6 |
20%-80% of differential voltage measured 1 inch from the output pin |
|
80 |
|
ps |
| tRF-MM |
Output Rise, Fall time mismatch |
20%-80% of differential voltage measured 1 inch from the output pin |
|
|
20 |
ps |
tdiff-LH, tdiff-HL |
Differential propagation delay see Figure 4 |
De-emphasis = -3.5 dB propagation delay between 50% level at input and output |
|
290 |
|
ps |
| tidleEntry, tidleExit |
Idle entry and exit times see Figure 5 |
|
|
3.6 |
|
ns |
| Timing |
| tREADY |
Time from power applied until RX termination |
Apply 0 V to VCC, connect SuperSpeed USB termination to TX±, apply 3.3 V to VCC, and measure when ZRX-DIFF is enabled. |
|
9 |
|
ms |
| Jitter |
| TJTX-EYE |
Total jitter (1) (2) |
EQ = Floating, OS = High, DE = High See Figure 3. |
|
0.213 |
|
UI (4) |
| DJTX |
Deterministic jitter (2) |
|
0.197 |
|
UI (4) |
| RJTX |
Random jitter (2) (3) |
|
0.016 |
|
UI (4) |