SDI Technologies SDIO Card - Manual (Page 38)

©Copyright 2002-2006 SD Card Association
SDIO Card Bluetooth Type-A Simplified Specification Version 1.00
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5.4.4 Read Flow for the Card with Unnecessary Read Acknowledge (RTC=1) – No Error
(Block Basis Transfer Mode)
Figure 22 – Read Flow for the Card with Unnecessary Read Acknowledge (RTC=1) – No Error
(Block Basis Transfer Mode)
CMD
DAT
Packet Data n Packet Data (n+1) Packet Data (n+2)
CMD
DAT2, 3
R R R
DAT1
Interrupt occur
DAT0 Data+CRC
Data+CRC
Data+CRC
Data+CRC
Data+CRC
Interface Header Interface data2
Data
+CRC
Data
+CRC
D
Byte mode Block mode
PCRRT: Packet Read Retry
R: Response
Int Int Int
Int. clr Int. clr Int. clr
No necessity of
sending Acknowledge
Don't
send Ack .
Don't
send Ack .
Don't
send Ack .
53 53 52 53 53 52 53 53 52
D D D D D D D D
CMD52 (W)
Int. Clear
CMD53 (R)
Receive Buff.
CMD53 (R)
Receive Buff.
Data
+CRC
Data+CRC