BCM88335L2CUBGT Datasheet, PDF (58/140 Pages) Cypress Semiconductor – Single-Chip 5G Wi-Fi IEEE 802.11ac MAC/Baseband/ Radio with Integrated Bluetooth 4.1 for Automotive Applications

BCM88335 Data Sheet
Figure 18: Signal Connections to SDIO Host (SD 4-Bit Mode)
CLK
SD Host
CMD
DAT[3:0]
BCM88335
SDIO v3.0
Figure 19: Signal Connections to SDIO Host (SD 1-Bit Mode)
CLK
CMD
SD Host
DATA
IRQ
BCM88335
RW
Note: Per Section 6 of the SDIO specification, pull-ups in the 10 kΩ to 100 kΩ range are required on
the four DATA lines and the CMD line. This requirement must be met during all operating states either
through the use of external pull-up resistors or through proper programming of the SDIO host’s internal
pull-ups.
Broadcom^®
September 23, 2015 • 88335-DS100-R
BROADCOM CONFIDENTIAL
Page 57