AS3606 datasheet(34/71 Pages) AMSCO

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AS3606 AS3607 2v2

Data Sheet - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s

Figure 18. Sequential Read

Sequential Read is the extended form of Random Read, as more than one register-data bytes are transferred subsequently. In difference to the

Random Read, for a sequential read the transferred register-data bytes are responded by an acknowledge from the master. The number of data

bytes transferred in one sequence is unlimited (consider the behavior of the word-address counter). To terminate the transmission the master

has to send a not-acknowledge following the last data byte and generate the STOP condition subsequently.

Figure 19. Current Address Read

To keep the access time as small as possible, this format allows a read access without the word address transfer in advance to the data transfer.

The bus is idle and the master issues a START condition followed by the Device-Read address. Analogous to Random Read, a single byte

transfer is terminated with a not-acknowledge after the 1st register byte. Analogous to Sequential Read an unlimited number of data bytes can

be transferred, where the data bytes has to be responded with an acknowledge from the master. For termination of the transmission the master

sends a not-acknowledge following the last data byte and a subsequent STOP condition.

read register

WA++

data

reg_data 2

read register

WA++

reg_data n

...

read register

WA++

read register

WA++

data

reg_data 2

read register

WA++

reg_data n

...

read register

WA++

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