AS5047U-HTST datasheet(21/51 Pages) AMSCO

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ams Datasheet

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[v1-00] 2018-Oct-30

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AS5047U − Detailed Description

Figure 28:

32-Bit Data Frame

The data sent on the MISO pin. The CRC is calculated by the

AS5047U. If an error or a warning is detected in the previous SPI

command frame, the Error/Warning bit is set high. The SPI read

is synchronized on the rising edge of CSn and the data is

transmitted on MISO with the next read command, as shown in

Figure 29.

Figure 29:

SPI Read

Recommended CRC calculation see chapter CRC Checksum

In an SPI write transaction, the write command frame is

followed by a write data frame at MOSI. The write data frame

consists of the new content of register which address is in the

command frame. During the new content is transmitted on

MOSI by the write data frame, the old content is send on MISO.

At the next command on MOSI the actual content of the register

is transmitted on MISO, as shown in Figure 30.

Bit

Name

Description

Warning Bit

Error Bit

29:16

Data

15:8

ADDR[13:0]

Calculated CRC

7:0

CRC

PAD Number

Read ADD[m]

Read ADD[n]

CSn

Read ADD[o]

DATA (ADD[m])

DATA (ADD[o])

Read ADD[p]

DATA (ADD[n])

Command

Data

MOSI

MISO

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