SDI Technologies SDIO Card - Manual (Page 33)

©Copyright 2002-2006 SD Card Association
SDIO Card Bluetooth Type-A Simplified Specification Version 1.00
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5.3.5 Read Flow for the Card with Necessary Read Acknowledge (RTC=0) – CRC Error
(Byte Basis Transfer Mode)
Figure 17 – Read Flow for the Card with Necessary Read Acknowledge (RTC=0) – CRC
Error (Byte Basis Transfer Mode)
53 53 53
CMD
DAT
Packet Data n
Packet Data (n+1)
Packet Data (n+1)
52
CMD
DAT2, 3
DAT1
DAT0 Data+CRC
Data+CRC
Data+CRC
Interface data1 Header
Data
+CRC
Data
+CRC
Data
+CRC
52 53 53 52 52 53 53 53 52 52
Header
Data
+CRC
Data
+CRC
Data
+CRC
CRC Error
CRC Error Occur!
Set Retry
Retry
Retry Retry Retry
PCRRT: Packet Read Retry
R: Response
Int Int Int
Int. clr Int. clr Int. clr send Ack. send Ack.
Set Retry
Int
52
Int. clr
Interrupt
D D D D D D D D
R R R R R
CMD53 (R)
Receive Buff.
CMD53 (R)
Receive Buff.
CMD52 (W)
PCRRT -> 1
CMD53 (R)
Receive Buff.
CMD52 (W)
Int. Clear