SanDisk SD032 Manual descargar pdf (Pagina 102)

The following table describes Stop transmission operation in case of Multiple Block Read.

L L L L * * * * * * * * * * * * * * * * * * * *

<- NCS ->

DataIN

X H H H H Stop Tran command HHHHH * * * * ** * * *

<- NCR ->

DataOut

Data Transfer to host H H Card Response H

<2clk>

Figure 5-15. Multiple Block Read Timing

Reading the CSD Register

The following timing diagram describes the SEND_CSD command bus transaction. The timeout values for the

response and the data block are N

(Since the N

is still unknown).

H L L L * * * * * * * * * * * * * * * * * * * L L L H H H H

<- N

-> <- N

DataIN

X H H H H Read Command H H H H H * * * * * * * * * * * * * * * H H H X X X X

<- N

-> <- N

DataOut

Z Z H H H H * * * * * * * * H H H H Card Response H H H H Data Block H H H H Z Z Z

Figure 5-16. Reading the CSD Register

5.4.3. Data Write

The host may deselect a card (by raising the CS) at any time during the card busy period (refer to the given timing

diagram). The card will release the DataOut line one clock after the CS going high. To check if the card is still busy

it needs to be re-selected by asserting (set to low) the CS signal.

The card will resume busy signal (pulling DataOut low) one clock after the falling edge of CS.

H L * * * * * * * * * * * * * * * * * * * L L L L L L L L H H H L L L L

<-N

-> <-N

DataIN

X H H H Write Command H H H H H H H Data Block H H H H H H X X X H H H H

<-N

DataOut

Z Z H H H * * * * * * * * H H H Card Resp H H H H H H H Data Resp Busy L Z Z Z Busy H

Figure 5-17. Device Write Timing

The following figure describes stop transmission operation in Multiple Block Write transfer.

CS L L L L L L L L L L L L L L L L L L L L L L H H H L L L L

-> <1byte-> <N

-> <N

-> <- N

Data In Data Block H H H H H H H H H stop tran

token

HHH XXXHHH H

Data Out H H H H Data Resp Busy H HHHHHHHH Busy

(1)

LZZZBusy

(1)

(1) The Busy may appear within N

clocks after Stop Tran Token. If there is no Busy, the host may continue to the next

command.

Figure 5-18. Stop Transmission Timing—Multiple Block Write

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 113 114

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SanDisk SD032 Manual Pagina 102

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