I2C registers
548
NS9750 Hardware Reference
Command Transmit Data register

Address: 9050 0000

The Command Transmit Data (CMD_TX_DATA_REG) register is the primary interface

register for transmission of data between the NS9750 BBus and I2C bus. This register

is write only.

Register bit assignment
Bits Access Mnemonic Reset Description
D31:16 N/A Reserved N/A N/A
D15 W PIPE 00hex Pipeline mode
Must be set to 0.
D14 W DLEN 00hex I2C DLEN port (iic_dlen)
Must be set to 0.
D13 W TXVAL 00hex Provide new transmit data in CMD_TX_DATA_REG
(tx_data_val).
D12:08 W CMD 00hex Command to be sent (see "Master and slave module
commands," beginning on page 546)
D07:00 W TXDATA 00hex Transmit data to I2C bus.

Table 337: CMD_REG and TX_DATA_REG

TXVAL CMD TXDATA
13121110987654321015 14
PIPE DLEN
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved