IC_SDA_SETUP
Name: I2C SDA Setup Register
Size: 8 bits
Address Offset: 0x94
Read/Write Access: Read/Write
This register controls the amount of time delay
(in terms of number of ic_clk clock periods) introduced
in the rising edge of SCL, relative to SDA changing, when
DW_apb_i2c 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.
Dependencies: This register is not applicable when IC_ULTRA_FAST_MODE=1
Module Instance | Base Address | Register Address |
---|---|---|
i_i2c_emac_0_DW_apb_i2c_addr_block1 | 0xFFC02A00 | 0xFFC02A94 |
i_i2c_emac_1_DW_apb_i2c_addr_block1 | 0xFFC02B00 | 0xFFC02B94 |
i_i2c_emac_2_DW_apb_i2c_addr_block1 | 0xFFC02C00 | 0xFFC02C94 |
Size: 32
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 |
RSVD_IC_SDA_SETUP RO 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RSVD_IC_SDA_SETUP RO 0x0 |
SDA_SETUP RW 0x64 |
IC_SDA_SETUP Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
31:8 | RSVD_IC_SDA_SETUP |
Reserved bits - Read Only |
RO | 0x0 |
7:0 | SDA_SETUP |
SDA Setup. It is recommended that if the required delay is 1000ns, then for an ic_clk frequency of 10 MHz, IC_SDA_SETUP should be programmed to a value of 11. Default Reset value: 0x64, but can be hardcoded by setting the IC_DEFAULT_SDA_SETUP configuration parameter. |
RW | 0x64 |