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AS5263

Datasheet - Application In form atio n

In case of READ or READ128 command (see Figure 15) the idle phase between the command and the answer is 10 TBIT (TSW).

Figure 16. Bus Timing for the READ Commands

In case of a WRITE command, the device stays in slave communication mode and will not switch to master communication mode.

When using other commands like DOWNLOAD, UPLOAD, etc. instead of READ or WRITE, it does not matter what is written in the address

fields (ADDR1, ADDR2).

8.1.3 UNBLOCK

The Unblock command can be used to reset only the one-wire interface of the AS5263 in order to recover the possibility to communicate again

without the need of a POR after a stacking event due to noise on the bus line or misalignment with the AS5263 protocol.

The command is composed by a not idle phase of at least 6 TBIT followed by a packet with all 20 bits at zero (see Figure 17).

Figure 17. Unblock Sequence

IDLE

01

10

P

00 0

DATA1

DATA0

20*TBIT

ADDR2

ADDR1

Slave Communication Mode

Master Communication Mode

TSW

IDLE

START

VH

VL

= 6 * TBIT => 3072* TCLK

PACKET[19:0] = 0x00000

START

= 512*TCLK

= 512*TCLK

20*TBIT => 10240*TCLK

= 512*TCLK

IDLE

IDLE

COMMAND FROM EXT MASTER

NOT IDLE