I am implementing SLIC functionality using the EC200 module with the SI32185 SLIC chip. The technical manual states that SLIC_RESET and SLIC_INT require a customized software/firmware version (see Quectel_EC200A_Series_Reference_Design_V1.1.pdf, p. 10). In a Chinese hardware manual (Quectel_EC200A系列_硬件设计手册_V1.1.pdf, p. 43) it says:
“SPI连接SLIC芯片SI32185时，需要使用模块引脚3作为RESET_SLIC连接SI32185的引脚18，使
用模块引脚4作为INT_SLIC连接SI32185的引脚6，同时需要软件更改模块引脚3、4的GPIO配置。 ”
How should I configure the hardware pins? Is it sufficient to simply send the specific AT commands — for example:
AT+QSLIC=0,2 //Disable SLIC.
AT+QSLIC=1,2 //Enable SLIC and set the SLIC platform type to SI32185.
Dear @Mr_Wanzi ,
Thank you for reaching out.
No, AT+QSLIC=1,2 alone is not sufficient.
For SI32185, the hardware connection should follow the manual: module pin 3 to SI32185 pin 18 as SLIC_RESET, and module pin 4 to SI32185 pin 6 as SLIC_INT. But these two pins require customized firmware/software configuration, as stated in the manual. So the AT command only enables SLIC and selects the SI32185 platform; it does not by itself remap pin 3 and pin 4 to the required SLIC functions.
In short, the correct requirement is: correct hardware wiring plus the customized firmware that changes pin 3 and pin 4 GPIO function. Without that customized software support, only sending the AT commands is not enough.
Best regards,
Aghelan
@aghelan_loga
Is it the same for the 5G modules (RG500Q / RG520) as well? Do they require custom firmware to use the SI32185, or can it be switched and controlled directly through AT commands?
Dear Customer,
Good question. It’s actually different from the EC200A here.
For the RG500Q series, the SI32185 is fully supported out of the box — no customized firmware required. You control it directly with AT+QSLIC, same form you already know: AT+QSLIC=1,2 to enable SLIC with SI32185. On the 5G modules there’s also an optional third parameter for region (e.g. AT+QSLIC=1,2,1 sets the France profile), which only applies to SI32185. The SLIC reference design uses the standard SPI interface, so there’s none of the EC200A pin-3/pin-4 GPIO remapping or custom software step.
One thing to clarify on your side: by “RG520” do you mean RG520N? That’s a separate platform from the RG500Q series and isn’t covered by the RG50xQ SLIC documentation, so I wouldn’t want to confirm it works the same way without checking the RG520N-specific docs.
I have the document RG50xQ_Series_SLIC_Application_Note_V1.0.pdf. Could you please confirm whether it is applicable to the RG520N? If not, I would appreciate any guidance or relevant documentation you could provide.
@fazrulredzuan
Dear Customer,
Unfortunately. SLIC feature is not supported in RG520N.