Problem using MC7304 on compliant MiniPCI Express slot

IoT Modules MC/EM Series
1

Hi,

I want to use MC7304 on a fully compliant MiniPCI Express slot. So far, I have found two conflict in hardware pins:

Pin 11: is defined as VCC_MSM18_DIG +1.8 V reference out on MC7304 and on PCI express it is defined as pci_clk_n.
Pin 33: is defined as SYSTEM_RESET_N on MC7304 and on PCI express it is defined as pci_tx_p.

I might have missed more conflicts which I hope not. Does anyone know a work around for this problem? Maybe deactivate those pins in the FW?

Regards,
Allan

2

Hi,
Which document are you referring to?
According to the AirPrime MC Series Dev Kit Quick start guide , Pin 11 corresponds to VCC_MSM18_DIG and Pin 33 corresponds to RESET_N.
You can refer the Dev kit schematic view for more information.

Link to the document: http://source.sierrawireless.com/resources/airprime/development_kits/airprime_mc_series_development_kit_board_quick_start_guide/

Regards,
Rex

3

Hi Rex,

Correct as you replied and that is the problem. According to PCIe standard, Pin 11 and 33 are defined as pci_clk_n and pci_tx_p, respectively. This is causing conflict with Sierra MC7304 module.

4

Hello All,

Have a nice day and please to meet you all. I would like to give some input here where I currently installed MC7304 on Lenovo X220/X220T running Windows 7 Pro 64 bit and already upgraded to Windows 10 Pro 64 bit where all running fine.

Forget all about where you only need to taped #20 pin (or #18 & #20 pins).

Regards,

Zainul

5

Hello All,

I don’t what really “problems” ?. For me, I had installed MC7304 on X220/X220T running Windows 7 Pro 64 bit and updated to Windows 10 Pro 64 bit where both are working fine even can get full 4G LTE internet access. Pin #20 should be taped or inclusive of pin #10 (Wireless Disable (main RF radio)).

Regards,

Zainul