Transmitter Control 2 - Address 12H; Transmitter Digital Interface Format (Bits 7:6); Transmitter Output Driver Control (Bit 5); Transmitter Mute Control (Bit 4) - Cirrus Logic CS4265 Manual

6.18

Transmitter Control 2 - Address 12h

7 6
Tx_DIF1 Tx_DIF0

6.18.1 Transmitter Digital Interface Format (Bits 7:6)

Function:
The required relationship between LRCK, SCLK and SDIN for the transmitter is defined by the Transmitter
Digital Interface Format and the options are detailed in
Tx_DIF1 Tx_DIF0
0
0
1
1

6.18.2 Transmitter Output Driver Control (Bit 5)

Function:
When this bit is cleared, the transmitter output pin driver will be in the normal operational mode. When
set, the transmitter output pin driver will drive to a constant 0 V.

6.18.3 Transmitter Mute Control (Bit 4)

Function:
When this bit is cleared, the transmitter data will be in the normal operational mode. When set, the trans-
mitter will output all zero data.

6.18.4 Transmitted Validity Bit Control (Bit 3)

Function:
This bit sets the transmitted Validity bit level.
When this bit is cleared, valid linear PCM audio data is indicated. When this bit is set, invalid or non-linear
PCM audio data is indicated.

6.18.5 Transmitter Mono/Stereo Operation Control (Bit 2)

Function:
When this bit is cleared, the transmitter will operate in stereo mode. When set, the transmitter will operate
in Mono Mode with one input channel's data output in both A and B subframes (see
Status (C) Bit Management" on page

6.18.6 Mono Mode CS Data Source (Bit 1)

Function:
When this bit is cleared, the transmitter will transmit the channel A CS data in the A subframe and the
channel B CS data in the B subframe.
When this bit is set, the transmitter will transmit the CS data defined for the channel selected by the
MMTLR bit in both the A and B subframes.
DS657F3
5 4
TxOff TxMute
Description
0 Left Justified, up to 24-bit data (default)
1 I²S, up to 24-bit data
0 Right-Justified, 16-bit Data
1 Right-Justified, 24-bit Data

Table 18. Transmitter Digital Interface Formats

53) and the CS data defined by the MMTCS bit (see Section 6.18.6).
3 2
V MMT
Table 18 and Figures
Format
0
1
2
3
CS4265
1 0
MMTCS MMTLR
5-7.
Figure
5
6
7
7
"IEC60958-3 Channel
45