Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: V2.0.8.0, V2.0.8.3, V2.0.8.4, V2.0.8.5, V2.0.8.7, V2.0.8.8, V2.0.8.9, V2.0.8.10, V2.0.8.11, V2.0.8.12, V2.0.8.14, V2.0.8.15, V2.0.8.16, V2.0.8.17, V2.0.8.18, V2.0.8.19, V2.0.8.20, V2.0.8.21, V2.0.8.22, V2.0.8.23, V2.0.8.24, V2.1.1.0, V2.1.2.0, V2.1.3.0, V2.1.4.0, V2.1.5.0, V2.1.5.1, V2.1.6.0, V2.1.6.1, V2.1.7.0, V2.1.7.1, V2.1.8.0, V2.1.8.1, V2.1.9.0, V2.1.9.1, V2.1.10.0
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Component/s: Drivers
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Labels:None
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Account:SDO rcX (SDORCX)
Description
Although not recommanded by specificiation, SD cards can be initialized via mandatory command CMD1 instead of CMD55/ACMD41. Nevertheless some SD cards do not answer to CMD1 at all. As Drv_MMC always perform initialization via CMD1, those cards are rejected!
Suggestion:
- Separate initialization via CMD55/ACMD41 for SD cards and via CMD1 for MMC cards. See figure in KB for new initialization process.