BCM43362KUBG Datasheet, PDF (25/84 Pages) Cypress Semiconductor – Single-Chip IEEE 802.11™ b/g/n MAC/Baseband/Radio + SDIO

BCM43362 Data Sheet
Generic SPI Mode
Generic SPI Mode
In addition to the full SDIO mode, the BCM43362 includes the option of using the simplified generic SPI (gSPI)
interface/protocol. Characteristics of the gSPI mode include:
• Supports up to 50 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 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. See Table 10 on page 56 for details.
Figure 9: Signal Connections to SDIO Host (gSPI Mode)
SCLK
DI
DO
SD Host
BCM43362
IRQ
CS
SPI Protocol
The SPI protocol supports both 16-bit and 32-bit word operation. Byte endianess is supported in both modes.
Figure 10 and Figure 11 show the basic write and write/read commands.
Broadcom_®
February 13, 2015 • 43362-DS106-R
IEEE 802.11 b/g/n MAC/Baseband/Radio + SDIO
Page 24
BROADCOM CONFIDENTIAL