SCDU040 November 2024 TMUX7308F , TMUX7309F , TMUX7348F , TMUX7349F
There are multiple test points (48) on the board that can be used to either measure the associated trace or apply external signals for testing purposes. Table 2-5 shows the test points for the sixteen generic U1 connections and 2 OVP Trigger Thresholds. There are two test points per pin of the IC, which are colored blue.
| Jumper ID | Test Point ID | Test Point ID | U1 Pin |
|---|---|---|---|
| J4 | TP13 | TP14 | 1 |
| J5 | TP15 | TP16 | 2 |
| J6 | TP17 | TP18 | 3 |
| J7 | TP19 | TP20 | 4 |
| J8 | TP21 | TP22 | 5 |
| J9 | TP23 | TP24 | 6 |
| J10 | TP25 | TP26 | 7 |
| J11 | TP27 | TP28 | 8 |
| J12 | TP29 | TP30 | 13 |
| J13 | TP35 | TP36 | 14 |
| J14 | TP31 | VFN | 9 |
| J15 | TP33 | VFP | 12 |
| J16 | TP39 | TP40 | 15 |
| J17 | TP37 | TP38 | 16 |
| J18 | TP41 | TP42 | 17 |
| J19 | TP43 | TP44 | 18 |
| J20 | TP45 | TP46 | 19 |
| J21 | TP47 | TP48 | 20 |
Test points also connect to VSS, VDD, and GND planes. In addition, there are test points for the fault flag indicator led circuits and OVP Trigger Thresholds.
Table 2-6 shows these test points.
| Test Point ID | Color | Signal |
|---|---|---|
| VDD | Red | VDD |
| GND | Black | GND |
| VSS | Green | VSS |
| VFP_V | Red | VFP Threshold Supply |
| VFN_V | Green | VFN Threshold Supply |
| V_FF | Blue | Fault Flag Indicator Led Circuits Supply |
| SF | Orange | Specific Fault Flag |
| FF | Orange | General Fault Flag |