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GS2101M IP2WiFi Adapter Command Reference Guide
1VV0301499
Rev. 2.0
53
2019-08-05
3.2.3 SDIO Interface
GS node is supported to be configured as SDIO slave only. It uses the SDIO interface with
a maximum clock frequency of 33 MHz.
3.2.3.1 Capabilities
1. Block size of 512 bytes
2. Data bus width of 4 bits
3. Maximum clock supported is 33Mhz
4. Support for Direct read/write (IO52) and Extended read/write (IO53) operations
5. IO Signals:
–
SDIO_CLK: Clock
–
SDIO_CMD: Command line
–
SDIO_DAT0: is used for data transfer and busy signaling
–
SDIO_DAT1: is used for data transfer and Interrupt signaling
–
SDIO_DAT2: is used for data transfer and read_wait
–
SDIO_DAT3: is used for data transfer
NOTE:
There is no command available to configure SDIO interface. This
interface can be only enabled from the SDK Builder while compiling the
firmware.