www.austriamicrosystems.com/AS5263

Revision 1.4

20 - 37

AS5263

Datasheet - Application In form atio n

Note:

Other commands are reserved and shall not be used.

Each communication begins by a condition of the bus level which is called START. This is done by forcing the bus in logical low level (done by

the programmer or AS5263 depending on the communication mode). Afterwards the bit information of the command is transmitted as shown in

Figure 14.

Figure 14. Bus Timing for the WRITE128 Command

Figure 15. Bus Timing for the READ128 Command

Table 15. OTP Commands and Communication Interface Modes

Possible Interface

Commands

Description

AS5263

Communication Mode

Command

CMD

Number of

Frames

UNBLOCK

Resets the interface

SLAVE

0x0

1

WRITE128

Writes 128 bits (user + factory settings) into the device

SLAVE

0x9

(0x1)

8

READ128

Reads 128 bits (user + factory settings) from the device

SLAVE and MASTER

0xA

9

UPLOAD

Transfers the register content into the OTP memory

SLAVE

0x6

1

DOWNLOAD

Transfers the OTP content to the register content

SLAVE

0x5

1

FUSE

Command for permanent programming

SLAVE

0x4

1

PASS2FUNC

Change operation mode from communication to operation

SLAVE

0x7

1

READ

Read related to address the user data

SLAVE and MASTER

0xB

2

WRITE

Write related to address the user data

SLAVE

0xC

1

11

00

10

00

DATA1

DATA0

DATA3

DATA2

10

00

DATA14

20*TBIT

START

IDLE

IDLE

01

10

P

00 0

DATA1

DATA0

P

00 0

DATA14

20*TBIT

DO NOT CARE

DO NOT CARE

Slave Communication Mode

Master Communication Mode

TSW

DATA3

IDLE

START