Users Manual Part 1

SIM8260A_Hardware Design_V1.05
www.simcom.com 49 / 122
AQR113
MARVELL
AQR113C-B0-C
QEP8121
Qualcomm
QEP-8121-1-56MQFN-**-02-0
RTL8211
REALTEK
RTL8211F-CG
3.6.4 PCIe interface for Qualcomm IPQxxxx
PCIe connected to qualcomm IPQxxxx is designed to be used as CPE application, the module does
EP and the qualcomm IPQxxxx does RC.
Since the PCIe_WAKE, PCIe_RST, and PCIe_CLKREQ control signals of IPQxxxx are in the voltage
domain of 1.8V, on the module side, CLKREQ# and PEWAKE# need to be pulled up to 1.8V externally
through 100KR. The following figure is a schematic diagram of the module connected to IPQxxxx.
Figure 26: Schematic diagram of module connected to IPQxxxx
3.7 SDIO Interface
SIM8260A provide 8-bit SDIO interface, which meets the SDIO3.0 specifications and supports SDIO host
mode. The clock output up to 200MHz for SD card, and up to 100MHz for eMMC. Support 4-bit
dual-voltage 1.8V or 3.0V SD card or 8-bit 1.8V eMMC.
The SD card and the eMMC reference circuits are shown below.