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SDIO (Robin, Woodpecker)

 
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Robin and Woodpecker have three SDIO slots.

Robin

Slot 0

Interface located on the CoM Express Connector. Make sure that write protect signal is grounded if using MicroSD socket.

Slot 1

Used for the OnModule MicroSD card socket.

Slot 2

Interface available on additional FFC cable.

Woodpecker

Slot 0

Interface available on additional FFC cable.

Slot 1

Used for the OnModule MicroSD card socket.

Slot 2

Interface available on additional FFC cable.

SD card

There are two standards available for SD storage cards:

  • SD
  • SDHC

Support for SD and SDHC is provided by BIOS, but needs a driver for an Operating System. For Windows XP,

  • to support SD card SP2 must be installed.
  • to support SDHC card SP3 must be installed.

Speed class support on Woodpecker Z5xx and Robin Z5xx

The speed class defines the minimum write speed to a fragmented sd card. The highest speed class supported the US15W is class 6.

Performance measured on Robin Z530

Speed tests are done by transferring a single file with a size of 230 MB. The result of those tests is stated in the next table.

READING @XP SP2 WRITING @XP SP2READING @XP SP3 WRITING @XP Class Spec
Daisy Robin USB Reader Daisy Robin USB Reader Daisy Robin USB Reader Daisy Robin USB Reader
Transcend Micro SD 1GB (no HC) 7.8 MB/sec 7.8 MB/sec 14.8 MB/sec 3.9 MB/sec 3.8 MB/sec 3.9 MB/sec 13.4 MB/sec 13.5 MB/sec 14.8 MB/sec 3.9 MB/sec 3.8 MB/sec 3.9 MB/sec 1.5 MB/sec
SanDisk Micro SD 2GB (no HC) 7.6 MB/sec 7.6 MB/sec 9.3 MB/sec 5.4 MB/sec 5.4 MB/sec 6.2 MB/sec 8.3 MB/sec 8.3 MB/sec 9.3 MB/sec 5.4 MB/sec 5.4 MB/sec 6.2 MB/sec 1.5 MB/sec
SanDisk Micro SD 4GB HC class 2 15.4 MB/sec 6.2 MB/sec 12.9 MB/sec 12.7 MB/sec 15.4 MB/sec 6 MB/sec 5.9 MB/sec 6.2 MB/sec 2 MB/sec
SanDisk Micro SD 4GB HC class 4 15.4 MB/sec 10.9 MB/sec 12.9 MB/sec 12.9 MB/sec 15.4 MB/sec 8.2 MB/sec 8.2 MB/sec 10.9 MB/sec 4 MB/sec

Daisy represents the interface located on the CoM Express Connector of the module.
Robin represents OnModule MicroSD card socket.
The USB Reader makes the MicroSD card working as an HID Device.
Class Spec defines the minimum sustained write speed for a fragmented card