MCP2210 Datasheet, PDF (37/82 Pages) Microchip Technology – USB-to-SPI Protocol Converter with GPIO (Master Mode)

MCP2210
TABLE 3-35: COMMAND 1 STRUCTURE (CONTINUED)
Byte
Index
Meaning
16
17
18
19
20
21-63
Delay Between Subsequent Data Bytes (quanta of 100 µs) – 16-bit value (low byte)
Example: If a 500 µs delay between two consecutive data bytes is required, the value will be 0x0005.
- This byte position will have a value of: 0x05
Delay Between Subsequent Data Bytes (quanta of 100 µs) – 16-bit value (high byte)
Example: If a 500 µs delay between two consecutive data bytes is required, the value will be 0x0005.
- This byte position will have a value of: 0x00
Bytes to Transfer per SPI Transaction – 16-bit value (low byte)
Example: If an SPI transaction of 1250 bytes long is required, the corresponding hex value
will be 0x04E2.
- This byte position will have a value of: 0xE2
Bytes to Transfer per SPI Transaction – 16-bit value (high byte)
Example: If an SPI transaction of 1250 bytes long is required, the corresponding hex value
will be 0x04E2.
- This byte position will have a value of: 0x04
SPI Mode
• 0x00 – SPI mode 0
• 0x01 – SPI mode 1
• 0x02 – SPI mode 2
• 0x03 – SPI mode 3
Don’t care
3.2.2.1 Responses
TABLE 3-36: RESPONSE 1 STRUCTURE
Byte
Index
Meaning
0
0x40 – Echoes back the completed command for Set (VM) SPI Transfer Settings code
1
0x00 – Command Completed Successfully
2
Don’t Care
3
Don’t Care
4
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
5
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
6
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
7
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
8
Idle Chip Select Value – 16-bit value (low byte):
• MSB – – –
– – – LSB
CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0
9
Idle Chip Select Value – 16-bit value (high byte):
• MSB –
xx
–––
xx x
– – LSB
x x CS8
 2011 Microchip Technology Inc.
DS22288A-page 37