SI3021 datasheet(35/54 Pages) ETC

35 / 54 page

Si3035

Rev. 1.2

Reset settings = 0000_0000

Reset settings = 0000_0011

Bit

D7D6D5

D4D3D2D1D0

Name

Type

R/W

Bit

Name

Function

7SR

Software Reset.

0 = Enables chip for normal operation.

1 = Sets all registers to their reset value.

6:2

Reserved

Read returns zero.

1DL

Isolation Digital Loopback.

0 = Disables digital loopback mode across the isolation barrier.

1 = Enables digital loopback mode across the isolation barrier.

0SB

Serial Digital Interface Mode.

0 = Operation is in 15-bit mode and the LSB of the data field indicates whether a secondary

frame is required.

1 = The serial port is operating in 16-bit mode and requires use of the secondary frame sync

signal, FC/RGDT, to initiate control data reads/writes.

Bit

D7D6D5

D4D3D2D1D0

Name

HBE

RXE

Type

R/W

Bit

Name

Function

7:4

Reserved

Read returns zero.

3AL

Analog Loopback.

0 = Disables analog loopback mode.

1 = Enables analog loopback mode.

Reserved

Read returns zero.

1HBE

Hybrid Enable.

0 = Disconnects hybrid in transmit path.

1 = Connects hybrid in transmit path.

0RXE

Receive Enable.

0 = Disables receive path.

1 = Enables receive path.

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