DRV201 ADDRESS

0

0

0

1

1

1

0

1

DATA

CURRENT REGISTER NUMBER K

REGISTER NUMBER K+1

K+2

DATA

DATA

L bytes of DATA

REGISTER NUMBER K+L-1

K+L

DRV201 ADDRESS

0

0

0

1

1

1

0

0

REGISTER NUMBER

M

DATA

CURRENT REGISTER NUMBER K

REGISTER NUMBER M

DATA

REGISTER NUMBER M+1

M+2

DATA

REGISTER NUMBER M+L-1

M+L

L bytes of DATA

DRV201 ADDRESS

0

0

0

1

1

1

0

1

DATA

REGISTER NUMBER M

REGISTER NUMBER M+1

K+2

DATA

DATA

L bytes of DATA

REGISTER NUMBER M+L-1

M+L

DRV201 ADDRESS

0

0

0

1

1

1

0

0

REGISTER NUMBER

M

CURRENT REGISTER NUMBER K

DRV201 ADDRESS

0

0

0

1

1

1

0

1

DATA

DRV201 ADDRESS

0

0

0

1

1

1

0

1

DATA

CURRENT REGISTER NUMBER K

REGISTER NUMBER K+1

K+2

DRV201

www.ti.com

SLVSB25C – AUGUST 2011 – REVISED JUNE 2015

Programming (continued)

Figure 8. Single Read from the Current Location

7.5.1.3 Sequential Read and Write

Sequential read and write allows simple and fast access to DRV201 registers. Figure 9 shows sequential read

from a defined location. If the master doesn’t issue a stop condition after giving ACK, DRV201 auto increments

the register number and writes the data from the next register.

Figure 9. Sequential Read from a Defined Location

Figure 10 shows the sequential write. If the master doesn’t issue a stop condition after giving ACK, DRV201 auto

increments it’s register by one and the master can write to the next register.

Figure 10. Sequential Write

If read is started without writing the register value first, DRV201 writes out data from the current location. If the

the data. This continues until the master issues a stop condition. This is shown in Figure 11.

Figure 11. Sequential Read Starting from a Current Location

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