Other Parts Discussed in Thread: CC3135, CC3200, CC3100
Tool/software:
We are performing a functional check using the BOOSTXL-CC3135 board, but the module does not behave as expected.
According to the following document, it is stated that the CC3135 module should assert the IRQ pin (active high) after the device initialization is complete:
CC3100/CC3200 SimpleLink Wi-Fi Internet-on-a-Chip User's Guide (Rev. C) – Page 20
The procedure we are following is as below:
The nHIB pin is held low for a short period and then driven high by the external MCU. This is intended to release the CC3135 from hibernate mode and begin its initialization sequence.
However, after this sequence, the IRQ pin remains low and never asserts (i.e., stays high) to indicate the end of initialization.
Setup:
External MCU drives nHIB low → high (with delay in between)
IRQ pin (CC_IRQ) is monitored but remains low
Jumper configuration on BOOSTXL-CC3135:
J2: 1–2 (VBAT_CC)
J3, J4, J5: 2–3 (Pulled Down)
J7: 2–3 (VCCLDO)
J8: Open
Are there any additional steps or hardware settings required to ensure the CC3135 properly exits hibernate mode and asserts the IRQ line?
Thank you for your support.
