TMC2192 datasheet(32/69 Pages) CADEKA

32 / 69 page

TMC2192

PRODUCT SPECIFICATION

REV. 1.0.0 8/13/03

sequence simply do not acknowledge (NOACK) the last byte

received and the TMC2192 will terminate the sequence.

A repeated start signal occurs when the master device driv-

ing the serial interface generates a start signal without ﬁrst

generating a stop signal to terminate the current communica-

tion. This is used to change the mode of communication

(read, write) between the slave and master without releasing

the serial interface lines.

Figure 26. Serial Interface – Typical Byte Transfer

Figure 27. Serial Interface – Chip Address

Serial Interface Read/Write Examples

Write to one control register

• Start signal

• Slave Address byte (R/W bit = LOW)

• Block Pointer (00)

• Offset Pointer

• Data byte to base address

• Stop signal

Write to four consecutive control registers

• Start signal

• Slave Address byte (R/W bit = LOW)

• Block Pointer (00)

• Offset Pointer

• Data byte to base address

• Data byte to (base address + 1)

• Data byte to (base address + 2)

• Data byte to (base address + 3)

• Stop signal

Write to one OLUT location

• Start signal

• Slave Address byte (R/W bit = LOW)

• Block Pointer (01)

• Offset Pointer (base address)

• Data byte to base address (Y)

• Data byte to base address (Cb)

• Data byte to base address (Cr)

• Stop signal

Write to four consecutive OLUT locations

• Start signal

• Slave Address byte (R/W bit = LOW)

• Block Pointer (01)

• Offset Pointer (base address)

• Data byte to base address (Y)

• Data byte to base address (Cb)

• Data byte to base address (Cr)

• Data byte to base address +1 (Y)

• Data byte to base address +1 (Cb)

• Data byte to base address +1 (Cr)

• Data byte to base address +2 (Y)

• Data byte to base address +2 (Cb)

• Data byte to base address +2 (Cr)

• Data byte to base address +3 (Y)

• Data byte to base address +3 (Cb)

• Data byte to base address +3 (Cr)

• Stop signal

Read from one control register

• Start signal

• Slave Address byte (R/W bit = LOW)

• Block Pointer (00)

• Offset Pointer

• Stop signal

• Start signal

• Slave Address byte (R/W bit = HIGH)

• Data byte from base address

•NOACK

SDA

65-6294-29

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ACK

SCL

SDA

65-6294-30

SA1

SA0

R/W

ACK

SCL

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