SI3050 datasheet(87/128 Pages) SILABS

87 / 128 page

Si3050 + Si3011/18/19

Rev. 1.5

Reset settings = 0000_0000

Bit

D7D6

D5D4D3D2D1D0

Name

PCML

PCME

PCMF[1:0]

PHCF

TRI

Type

R/W

Bit

Name

Function

PCML

PCM Analog Loopback.

0 = Normal operation.

1 = Enables analog data to be received from the line, converted to digital data and trans-

mitted across the ISOcap link. The data passes through the RX filter and is looped back

through the TX filter and is transmitted back out to the line.

5PCME

PCM Enable (Registers 34–37 should be set before PCM transfers are enabled).

0 = Disable PCM transfers.

1 = Enable PCM transfers.

4:3

PCMF[1:0]

PCM Data Format.

00 = A-Law. Signed magnitude data format (refer to Table 23 on page 46).

01 = µ-Law. Signed magnitude data format (refer to Table 22 on page 45).

10 = 8-bit linear. The top 8-bits of the 16-bit linear signal are transferred, and the bottom

8-bits are discarded (2s complement data format).

11 = 16-bit linear (2s complement data format).

Reserved

Always write this bit to zero.

1PHCF

PCM Highway Clock Format.

0 = 1 PCLK per data bit.

1 = 2 PCLKs per data bit.

0TRI

Tri-state Bit 0.

0 = Tri-state bit 0 on positive edge of PCLK.

1 = Tri-state bit 0 on negative edge of PCLK.

Si3050 Datasheet(PDF) 87 Page - Silicon Laboratories

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