Microchip Technology ADM00421 Data Sheet
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
0
0x40 – Set (VM) SPI Transfer Settings (volatile memory)
1
0x00 – Reserved
2
0x00 – Reserved
3
0x00 – Reserved
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
• MSB – – – – – – LSB
CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0
9
Idle Chip Select Value – 16-bit value (high byte):
• MSB – – – – – – LSB
• MSB – – – – – – LSB
x x x x x x x CS8
10
Active Chip Select Value – 16-bit value (low byte):
• MSB – – – – – – LSB
• MSB – – – – – – LSB
CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0
11
Active Chip Select Value – 16-bit value (high byte):
• MSB – – – – – – LSB
• MSB – – – – – – LSB
x x x x x x x CS8
12
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
13
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
14
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
15
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