AK4385ET AKM [Asahi Kasei Microsystems], AK4385ET Datasheet - Page 18

• Manufacturer Part Number: AK4385ET
• Description: 108dB 192kHz 24-Bit 2ch ?? DAC
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
Figure 9 shows the system connection diagram. An evaluation board (AKD4385) is available in order to allow an easy
study on the layout of a surrounding circuit.
MS0246-E-01
Addr
Addr
02H
03H
04H
Notes:
Reset & Power down
DZFM: Data Zero Detect Mode
DZFB: Inverting Enable of DZF
- LRCK = fs, BICK = 64fs.
- When AOUT drives some capacitive load, some resistor should be added in series between AOUT and
- All input pins should not be left floating.
24bit Audio Data
Control 3
Lch ATT
Rch ATT
ATT = 20 log
00H: Mute
Digital Ground
capacitive load.
default
default
Register Name
Register Name
Master Clock
Micro-
controller
64fs
fs
0: Channel Separated Mode
1: Channel ANDed Mode
If the DZFM bit is set to “1”, the DZF pins of both channels go to “H” only when the input data at both
channels are continuously zeros for 8192 LRCK cycles.
0: DZF goes “H” at Zero Detection
1: DZF goes “L” at Zero Detection
10
(ATT_DATA / 255) [dB]
ATT7
ATT7
Analog Ground
D7
D7
1
0
0
Figure 9. Typical Connection Diagram
1
2
3
4
5
6
7
8
ATT6
ATT6
D6
D6
0
0
1
MCLK
BICK
SDTI
LRCK
PDN
CSN
CCLK
CDTI
SYSTEM DESIGN
AK4385
ATT5
ATT5
D5
D5
0
0
1
- 18 -
AOUTR+
ATT4
ATT4
AOUTL+
AOUTR-
AOUTL-
D4
D4
DZFR
DZFL
0
0
1
VDD
VSS
16
15
14
13
12
11
10
9
ATT3
ATT3
D3
D3
1
0
0
0.1u
Rch
LPF
LPF
Lch
+
DZFB
ATT2
ATT2
10u
D2
D2
0
1
ATT1
ATT1
MUTE
MUTE
Rch
Lch
D1
D1
0
0
1
Analog
Supply 5V
[AK4385]
Lch Out
Rch Out
2006/01
ATT0
ATT0
D0
D0
0
1
0