ES9028PRO datasheet(13/57 Pages) ESS

13 / 57 page

July 6, 2020

CONFIDENTIAL INFORMATION v3.6

ES9028PRO 32-Bit HyperStream® II 8-Channel Audio DAC

ESS TECHNOLOGY, INC. 237 South Hillview Drive, Milpitas, CA 95035, USA. Tel (408) 643-

8800 • Fax (408) 643-8801

DoP (DSD over PCM) Audio Format

The DoP format packs DSD data into PCM frames. The incoming data is identified as DoP if the DSD Markers 0x05 and

0xFA alternating each frame clock cycle are present as illustrated below.

Frame Cycle

1 Left

1 Right

2 Left

2 Right

3 Left

3 Right

DSD Marker

0x05

0xFA

0x05

Note: DoP requires 24-bit or 32-bit PCM mode and cannot be handled by 16-bit PCM mode.

•

24-bit mode: DoP data consists of 8-bit marker in the MSB followed by 16-bit DSD data

•

32-bit mode: DoP data consists of 8-bit marker in the MSB followed by 16-bit DSD data and 8-bit padding

Native DSD Format

DATA

BCK

8- bit DSD Mar ker

16 Bit s of DSD Audio

8- bit DSD Mar ker

8 Bit s of 0 Padding

16 Bit s of DSD Audio

0 31 30

................

Left Channel

Right Channel

D..

DSD1

DSD2

DCLK

D..

DSD1

DSD2

DCLK

D..

DSD NORMAL MODE

DSD PHASE MODE

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