LP-CC1352P7: HW design questions

Kien

Part Number: LP-CC1352P7
Other Parts Discussed in Thread: CC1352P7

Hi,

We follow the LP's design and have few questions:

Q1 – We intend to operate Wisun in 868/915MHz @ 20dm power. Do we still need to mount the RF front-end matching circuit for 2.4GHz +5dBm and 868/915 +14dBm circuit and the RF switch?

Q2 – We couldn't find the specs of the Y2 crystal, please share with us.

Q3 – We are not implementing Bluetooth or RTC function. So for Wisun 868/915MHz communication only, do we need the 32.768KHz crystal in the design?

Q4 – CC1352P7 support CJTAG, the signal from XDS110 debugger connected to CC1352P7 are:

WMCU_TMS
WMCU_TCK
WMCU_RESET

Are these above signals enough to do firmware download and code debugging?

Regards,

Kien Nguyen

over 1 year ago

+1 TER over 1 year ago

TI__Guru**** 317180 points

Q1: The 20 dBm path is TX only. I assume that you also need to receive? If that is the case, the 868/915 +14dBm path has to be mounted in addition. If you don't need the 2.4 GHz path, leave the 2.4 GHz pins as NC.

Q2: Are you here referring to the 48 MHz xtal? Refer to https://www.ti.com/lit/pdf/swra495 for potential parts.

Q3: All the stacks need accurate timing, the 32 kHz external xtal should be mounted.

Q4: Yes. In addition power + ground should be connected.

0 Kien over 1 year ago in reply to TER

TI__Expert 3520 points

TER,

Thanks a lot for your help!

Kien Nguyen

Sub-1 GHz

Sub-1 GHz forum

LP-CC1352P7: HW design questions