CC1310: Configure recharge interval: RECHARGECFG Register

Billy Xu

Intellectual 490 points

Part Number: CC1310

Tool/software:

Dear TI Expert,

Could you help to explain how to use the CC1310 RECHARGECFG Register C2，C1?

To improve the VDDR load , how to adjust the gain fact C1、 C2、MAX_PER_M、MAX_PER_E?

over 1 year ago

0 ZC over 1 year ago

TI__Mastermind 18655 points

Hi,

These are typically already set automatically; you can look at the pinStandby example in the SDK: https://dev.ti.com/tirex/explore/node?node=A__AGBjquGb2vM5HmFtl4lf9w__com.ti.SIMPLELINK_CC13X0_SDK__eCfARaV__LATEST&placeholder=true

You can also refer to the following App Note for more understanding:SPRUI18 (SimpleLink SDK Power Management: MSP432, MSP432E4, CC13xx/CC26xx, and CC32xx): https://www.ti.com/lit/sprui18

Searching the SDK (locally) reveals some additional information for understanding how this is handled automatically, starting with searching for AON_WUC_O_RECHARGECFG within:

ti\simplelink_cc13x0_sdk_4_20_02_07\source\ti\devices\cc13x0\inc\hw_aon_wuc.h
ti\simplelink_cc13x0_sdk_4_20_02_07\source\ti\devices\cc13x0\inc\hw_aon_wuc.c
ti\simplelink_cc13x0_sdk_4_20_02_07\source\ti\devices\cc13x0\driverlib\aon_wuc.c
ti\simplelink_cc13x0_sdk_4_20_02_07\source\ti\devices\cc13x0\rom\driverlib.c

You can look further into the SDK and API documentation for insight into the pinStandby implementation.

Regards,

Zack

0 TheGhostOf over 1 year ago in reply to ZC

Mastermind 6520 points

I would guess that you are still working with the same as in https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1371440/cc1310-how-to-use-recharge-algorithm-to-maintain-high-power-vddr-when-cc1310-work-in-standby-mode/5238792?

If so, note that the recharge algorithm is based on the current draw from the CC1310 only (it's no feedback internal in the chip). Meaning if you try to draw extra current from the VDDR node the recharge algorithm will not work as intended and the chip will crash.

You should most likely take a step back and look at your original issue.

Sub-1 GHz

Sub-1 GHz forum

CC1310: Configure recharge interval: RECHARGECFG Register