MCP2210 datasheet(36/82 Pages) MICROCHIP

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MCP2210

DS22288A-page 36

 2011 Microchip Technology Inc.

3.2.2

SET (VM) SPI TRANSFER SETTINGS

TABLE 3-35:

COMMAND 1 STRUCTURE

Byte

Index

Meaning

0x40 – Set (VM) SPI Transfer Settings (volatile memory)

0x00 – Reserved

Bit Rate (Byte 3) – 32-bit value (Byte 0, Byte 1, Byte 2, Byte 3)

Example: Bit rate = 12,000,000 bps = 00B7 1B00

- This byte position will have a value of = 0x00

Bit Rate (Byte 2) – 32-bit value (Byte 0, Byte 1, Byte 2, Byte 3)

Example: Bit rate = 12,000,000 bps = 00B7 1B00

- This byte position will have a value of = 0x1B

Bit Rate (Byte 1) – 32-bit value (Byte 0, Byte 1, Byte 2, Byte 3)

Example: Bit rate = 12,000,000 bps = 00B7 1B00

- This byte position will have a value of = 0xB7

Bit Rate (Byte 0) – 32-bit value (Byte 0, Byte 1, Byte 2, Byte 3)

Example: Bit rate = 12,000,000 bps = 00B7 1B00

- This byte position will have a value of = 0x00

Idle Chip Select Value – 16-bit value (low byte):

• MSB

–

LSB

CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0

Idle Chip Select Value – 16-bit value (high byte):

• MSB

–

LSB

CS8

Active Chip Select Value – 16-bit value (low byte):

• MSB

–

LSB

CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0

Active Chip Select Value – 16-bit value (high byte):

• MSB

–

LSB

CS8

Chip Select to Data Delay (quanta of 100 µs) – 16-bit value (low byte)

Example: If we have 500 µs delay between the CS being asserted and the first byte of data, the value

will be 0x0005.

- This byte position will have a value of: 0x05

Chip Select to Data Delay (quanta of 100 µs) – 16-bit value (high byte)

Example: If a 500 µs delay between the CS being asserted and the first byte of data is required, the

value will be 0x0005.

- This byte position will have a value of: 0x00

Last Data Byte to CS (de-asserted) Delay (quanta of 100 µs) – 16-bit value (low byte)

Example: If a 500 µs delay between the last data byte sent and the CS being asserted is required, the

value will be 0x0005.

- This byte position will have a value of: 0x05

Last Data Byte to CS (de-asserted) Delay (quanta of 100 µs) – 16-bit value (high byte)

Example: If a 500 µs delay between the last data byte sent and the CS being de-asserted is required,

the value will be 0x0005.

- This byte position will have a value of: 0x00

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