ATPL230A datasheet(14/122 Pages) ATMEL

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ATPL230A [DATASHEET]

Atmel-43053J-ATPL230A-Datasheet_22-Sep-16

Following the dummy byte, n data bytes (where n ≥ 1) are sent/received:



If the operation code corresponds to a write operation in memory, the first data byte will be written in the

specified address. If more data bytes are sent, they will be written in subsequent memory positions.



If the operation code corresponds to a read operation from memory, the ATPL230A will output the data byte in

MISO line. If the master continues sending SCK cycles, subsequent memory positions will be written in MISO

line by the slave.



If the operation code corresponds to a mask operation (AND, OR, XOR), the master will send the byte mask

that have to be applied to the byte located at the specified address memory. If the master continues sending

bytes, they will be applied as masks to the bytes stored in subsequent memory positions.



If the operation code corresponds to a write_rep operation in memory, the dummy byte is changed by a number

between 0x00 and 0xFF, called OFFSET_ADDRESS. Data bytes will be written from ADDRESS to

ADDRESS+OFFSET_ADDRESS. For example, if OFFSET_ADDRESS = 0x04, the five first data bytes will be

written between ADDRESS and ADDRESS+4, and then, the sixth data byte, will be written in ADDRESS, the

seventh in ADDRESS+1, and so on. It is used to fill the some memories in PHY Layer (Chirp, Angle and IIR).

Bytes will be always sent with the most significant bit first.

Figure 6-3.

SPI Frame Example

A15

A10

A11

A12

A13

A14

A1 A0

...

op7

op0

op1

op2

op3

op4

op5

op6

DUM 7

DUM 0

SPI_CLK

OPCODE (7:0)

MOSI

DUMMY BYTE

ADDRESS (15:0)

1st DATA BYTE

2nd DATA BYTE

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