The TUSB2136TPS2149PDK test points are not labeled on either side of the PCB.
Where are the test points located on the PCB and what do they do?
Please send me information on each test point.
Hello Don,
Here you go the reference for all the 18 test points on the board, please notice that all you need to understand each test point, is to analyze the schematic and the PCB layout.
1.- S3 pin of the TUSB2136
2.- S2 pin of the TUSB2136
3.- SDA pin of the TUSB2136
4.- SCL pin of the TUSB2136
5.- Upstream DM pin of the TUSB2136 (DM0)
6.- Upstream DP pin of the TUSB2136 (DP0)
7.- RST pin of the TUSB2136
8.- DVCC 3.3V
9.- DP1 pin of the TUSB2136
10.- DM1 pin of the TUSB2136
11.- DP2 pin of the TUSB2136
12.- DM2 pin of the TUSB2136
13.- 1.8V
14.- Out2 pin of the TPS2149IDGN, Downstream VBUS2
15.- VregOut pin of the TPS2149IDGN, DVCC 3.3V
16.- VIN pin of the TPS2149IDGN, Upstream VBUS (5V, POWER signal)
17.- Out1 pin of the TPS2149IDGN, Downstream VBUS1
18.- EN1 pin of the TPS2149IDGN, PWR01 pin of the TUSB2136
Best regards,
Diego.
The board has two unpopulated testpoints, which should be located around the TPS2149. Please see the picture below to locate the points on the board.
19.- EN2 signal of the TPS2149, PWR02 signal of the TUSB2136
20.- OC signal of the TPS2149, OVCR1 & OVCR2 signals of the TUSB2136
Again, the schematic you have is correct, because the missing test points on my board still match with the schematic you have. Indeed the schematic has an extra test point which is not being populated at all doe to its connected to DVCC_33 (3.3 V). Here is a screen capture which contains a red circle on all the test points:
Regards,
Diego.
