Datasheet

TMC8462 Datasheet • Document Revision V1.5 • 2019-June-21

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7.3.3 I2C Master Interface

7.3.3.1 Register 12 – I2C_TIMEBASE

Bit Description ECAT PDI Range [Unit]

7:0 I2C_BIT_DURATION

0 = oﬀ

1 . . . 255 = 1µs . . . 255µs = 250kbit/s . . . 980bit/s

-/w -/w 0

. . . 255

[µs]

Table 137: MFC IO Register 12 – I2C_TIMEBASE

7.3.3.2 Register 13 – I2C_CONTROL

Bit Description ECAT PDI Range [Unit]

0 receive Data and send NACK -/w -/w

1 receive Data and send ACK -/w -/w

2 Send Data (content of data I2C_DATA_W) -/w -/w

Send Address (content of address register

I2C_ADDRESS), incl. R/nW bit

-/w -/w

4 Send Stop Condition -/w -/w

5 Send Start Condition (also Repeated Start) -/w -/w

7:6 unused -/w -/w

Table 138: MFC IO Register 13 – I2C_CONTROL

7.3.3.3 Register 14 – I2C_STATUS

Bit Description ECAT PDI Range [Unit]

0 St - Start condition sent r/- r/-

1 RSt - Repeated Start condition sent r/- r/-

2 ADR - Transmit Address mode r/- r/-

3 RX - Read from Slave mode r/- r/-

4 TX - Write to slave mode r/- r/-

5 ACK - Acknowledge received/sent r/- r/-

6 NAK - Not Acknowledge received/sent r/- r/-

7 ERR - Error Flag r/- r/-

Table 139: MFC IO Register 14 – I2C_STATUS

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