BCM43353LIUBGT Datasheet, PDF (61/143 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/Radio with Integrated Bluetooth 4.1 for Automotive and Industrial Applications

BCM43353 Data Sheet
Figure 18: Signal Connections to SDIO Host (SD 4-Bit Mode)
CLK
SD Host
CMD
DAT[3:0]
BCM43353
Figure 19: Signal Connections to SDIO Host (SD 1-Bit Mode)
CLK
CMD
SD Host
DATA
IRQ
BCM43353
RW
SDIO v3.0
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^®
November 14, 2014 • 43353-DS104-R
Page 60