ic_sda_setup
I2C SDA Setup Register
This register controls the amount of time delay
(in terms of number of l4_sp_clk clock periods) introduced
in the rising edge of SCL, relative to SDA changing, when
the I2C module services a read request in a slave-transmitter operation.
The relevant I2C requirement is tSU:DAT (note 4) as detailed in the
I2C Bus Specification.
Module Instance | Base Address | Register Address |
---|---|---|
i_i2c_emac_0_i2c | 0xFFC02400 | 0xFFC02494 |
i_i2c_emac_1_i2c | 0xFFC02500 | 0xFFC02594 |
i_i2c_emac_2_i2c | 0xFFC02600 | 0xFFC02694 |
Offset: 0x94
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
sda_setup RW 0x64 |
ic_sda_setup Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
7:0 | sda_setup | SDA Setup. It is recommended that if the required delay is 1000ns, then for an l4_sp_clk frequency of 10 MHz, IC_SDA_SETUP should be programmed to a value of 11. Default Reset value: 0x64 |
RW | 0x64 |