BCM88335L2CUBGT Datasheet, PDF (59/140 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
Generic SPI Mode
Generic SPI Mode
In addition to the full SDIO mode, the BCM88335 includes the option of using the simplified generic SPI (gSPI)
interface/protocol. Characteristics of the gSPI mode include:
• Supports up to 48 MHz operation
• Supports fixed delays for responses and data from device
• Supports alignment to host gSPI frames (16 or 32 bits)
• Supports up to 2 KB frame size per transfer
• Supports little endian (default) and big endian configurations
• Supports configurable active edge for shifting
• Supports packet transfer through DMA for WLAN
gSPI mode is enabled using the strapping option pins strap_host_ifc_[3:1].
Figure 20: Signal Connections to SDIO Host (gSPI Mode)
SD Host
SCLK
DI
DO
IRQ
CS
BCM88335
Broadcom^®
September 23, 2015 • 88335-DS100-R
BROADCOM CONFIDENTIAL
Page 58