BCM4356XKWBGT Datasheet, PDF (73/195 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac 2×2 MAC/ Baseband/Radio with Integrated Bluetooth 4.1, FM Receiver, and Wireless Charging

BCM4356 Advance Data Sheet
Figure 29: Signal Connections to SDIO Host (SD 4-Bit Mode)
SD Host
CLK
CMD
DAT[3:0]
BCM4356
Figure 30: Signal Connections to SDIO Host (SD 1-Bit Mode)
SD Host
CLK
CMD
DATA
IRQ
RW
BCM4356
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^®
May 8, 2015 • 4356-DS103-R
BROADCOM CONFIDENTIAL
Page 72