Procedure; Connection Diagram - Keysight Technologies N5990A User Manual

4 Calibrations

Procedure

Connection Diagram

100
When the DSGA is used, two calibrations are required at each data rate:
one for Data0 and another one for the other channels. The calibration for
Data0 includes the switch. For the other channels, Data1 is calibrated
without switch.
For Gear 1 & Gear2 calibrations, the Keysight SATA II ISI channel
(N4915-60001) can be used. The 3 Gb/s trace length (535 mm is
recommended) is compatible with the M-PHY specification requirements.
For Gear 3 and Gear 4 calibrations, there is no a specific ISI trace defined.
The channel must meet the requirement of the Reference CH1 channel
defined in the M-PHY specification (last version 4,10). Instead of using a
physical ISI channel, embedded ISI of M8020A can be used, if available.
The data generator sends a continuous CJTPAT pattern at the selected
HS-Gear data rate. The ISI is then measured and stored.
Figure 55
system configurations.
The connection diagrams shown are for Gear1. They are the same for
NOTE
Gear2 and Gear 3, but vary in the TTC value (G1: 250ps; G2: 125ps; G3
and G4: 60ps).
Figure 55
to Figure 58 show the connection diagrams for the different
Connection Diagram for ISI Calibration (for M8020A)
Keysight N5990A MIPI M-PHY Receiver Test User Guide