PCM1738E2K BURR-BROWN [Burr-Brown Corporation], PCM1738E2K Datasheet - Page 18

• Manufacturer Part Number: PCM1738E2K
• Description: 24-Bit, 192kHz Sampling, Advanced Segment, Audio-Stereo DIGITAL-TO-ANALOG CONVERTER
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

18
REGISTER 18
FMT[2:0]
DMF[1:0]
DME
MUTE
Digital De-Emphasis Control
This bit is Read/Write.
Default Value: 0
For DSD mode, DME must be set to 1.
The DME bit is used to enable or disable the De-Emphasis function for both channels.
Soft Mute Control
This bit is Read/Write.
Default Value: 0
The MUTE bit is used to enable the Soft Mute function for both channels. The mute function is also available
through the MUTE control input (pin 15). Soft Mute is performed by using the 256 step attenuator, cycling
one step per time interval to –
Register 19.
Sampling Frequency Selection for the De-Emphasis Function
These bits are Read/Write.
Default Value: 00
The DMF[1:0] bits are used to select the sampling frequency used for the Digital De-Emphasis function when
it is enabled by setting the DME bit. The De-Emphasis curves are shown in the Typical Performance Curves
section of this data sheet.
For DSD Mode, Analog FIR filter performance may be selected using this register. Filter response plots are
shown in the Typical Performance Curves section of this data sheet. The Register Map is shown in the DSD
Mode section of this data sheet.
Audio Interface Data Format
These bits are Read/Write.
Default Value: 000
For external Digital-Filter Interface Mode (DFTH Mode), this register is operated as shown in the External
Digital-Filter Mode section of this data sheet.
The FMT[2:0] bits are used to select the data format for the serial audio interface.
FMT[2:0]
DMF[1:0]
DME = 0
DME = 1
MUTE = 0
MUTE = 1
(Cont.)
000
001
010
011
100
101
110
111
00
01
10
11
De-Emphasis Same Rate Selection
Disabled (default)
48kHz
44.0kHz
32kHz
Audio Data Format Selection
16-Bit Standard Format, Right-Justified Data (default)
20-Bit Standard Format, Right-Justified Data
24-Bit Standard Format, Right-Justified Data
24-Bit MSB-First, Left-Justified Format Data
16-Bit I
24-Bit I
Reserved
Reserved
De-Emphasis Disabled (default)
De-Emphasis Enabled
MUTE Disabled (default)
MUTE Enabled
2
2
S Format Data
S Format Data
(Mute). The time interval is set by the rate select bit (ATS), located in
PCM1738
SBAS174B