ASAHI KASEI
[AK4117]
MS0157-E-03
2004/04
- 1 -
GENERAL DESCRIPTION
The AK4117 is a S/PDIF AES/EBU receiver supporting sample rates up to 192kHz and resolution up to
24-bit. The integrated channel status decoder supports both consumer and professional modes. The
AK4117 can automatically detect a Non-PCM bit stream. Combining the AK4117 with a multi-channel
codec such as AKM's AK4527B or AK4529 can create a complete AC-3 system. Mode settings can be
controlled via microprocessor serial interface. A low power mode is available for normal speed modes
and the small 24pin VSOP package saves board space.
*AC-3 is a trademark of Dolby Laboratories.
FEATURES
AES3, IEC60958, S/PDIF, EIAJ CP1201 Compatible
Low jitter Analog PLL
PLL Lock Range : 32kHz to 192kHz
Clock Source: PLL or X'tal
2-channel Receiver inputs Selector
Auxiliary digital input
Detection Functions
- Non-PCM Bit Stream Detection
- DTS-CD Bit Stream Detection
- Sampling Frequency Detection
(32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz)
- Unlock & Parity Error Detection
- Validity Flag Detection
Up to 24bit Audio Data Format
Audio I/F: Left justified, Right justified (16bit, 18bit, 20bit, 24bit), I
2
S
40-bit Channel Status Buffer
Burst Preamble bit Pc and Pd Buffer for Non-PCM bit stream
Q-subcode Buffer for CD bit stream
4-wire Serial P I/F
Master Clock Output: 128fs/256fs/512fs
Operating Voltage: 2.7 to 3.6V
Small Package: 24pin VSOP
Ta: -40 to 85
C
Low Power 192kHz Digital Audio Receiver
AK4117
ASAHI KASEI
[AK4117]
MS0157-E-03
2004/04
- 4 -
PIN/FUNCTION
No. Pin
Name
I/O
Function
1 R
-
External Resistor Pin
12k
-5% ~ 13k+5% resistor to AVSS externally.
2
AVDD
-
Analog Power Supply Pin
3
RX1
I
Receiver Channel 1 (Internal Biased Pin)
4 NC
-
No Connect
No internal bonding.
5
RX0
I
Receiver Channel 0 (Internal Biased Pin)
6
DVDD
-
Digital Power Supply Pin
7
DVSS
-
Digital Ground Pin
8
XTI
I
X'tal Input Pin
9
XTO
O
X'tal Output Pin
10 LRCK
O Output
Channel
Clock
Pin
11
BICK
O
Audio Serial Data Clock Pin
12 SDTO
O Audio
Serial Data Output Pin
13 DAUX
I Auxiliary
Audio
Data
Input
Pin
14
MCKO
O
Master Clock Output Pin
15 NC
-
No Connect
No internal bonding.
16 UOUT
O
U-bit Output Pin
When UOUTE bit = "0", UOUT pin = "L".
17
CDTO
O
Control Data Output Pin
18
CDTI
I
Control Data Input Pin
19
CCLK
I
Control Data Clock Pin
20
CSN
I
Chip Select Pin
21
INT1
O
Interrupt 1 Pin
22
INT0
O
Interrupt 0 Pin
23 PDN
I
Power-Down & Reset Pin
When "L", the AK4117 is powered-down and reset, and all output pins go to
"L" and the control registers are reset to default state.
24
AVSS
-
Analog Ground Pin
Note 1: All input pins except internal biased pins should not be left floating.
ASAHI KASEI
[AK4117]
MS0157-E-03
2004/04
- 5 -
ABSOLUTE MAXIMUM RATINGS
(AVSS, DVSS=0V; Note 2)
Parameter Symbol
min
max
Units
Power Supplies:
Analog
Digital
|AVSS-DVSS| (Note 3)
AVDD
DVDD
GND
-0.3
-0.3
4.6
4.6
0.3
V
V
V
Input Current (Any pins except supplies)
IIN
-
10
mA
Input Voltage (Except RX0, RX1 pins)
(RX0, RX1 pins)
VIN1
VIN2
-0.3
-0.3
DVDD+0.3
AVDD+0.3
V
V
Ambient Temperature (Power applied)
Ta
-40
85
C
Storage Temperature
Tstg
-65
150
C
Note 2. All voltages with respect to ground.
Note 3. AVSS and DVSS must be connected to the same ground.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(AVSS, DVSS=0V; Note 2)
Parameter Symbol
min
typ
max
Units
Power Supplies:
Analog
Digital
AVDD
DVDD
2.7
2.7
3.3
3.3
3.6
AVDD
V
V
Note 2. All voltages with respect to ground.
S/PDIF RECEIVER CHARACTERISTICS
(Ta=25
C; AVDD, DVDD=2.7~3.6V)
Parameter Symbol
min
typ
max
Units
Input Resistance
Zin
-
10
-
k
Input Voltage
VTH
350
mVpp
Input Sample Frequency
fs
32
-
192
kHz
DC CHARACTERISTICS
(Ta=25C; AVDD, DVDD=2.7~3.6V; unless otherwise specified)
Parameter Symbol
min
typ
max
Units
Power Supply Current
Normal operation (PDN= "H") (Note 4)
LP= "0", CM1-0= "00" (Note 5)
LP= "1", CM1-0= "00" (Note 6)
LP= "1", CM1-0= "01" (Note 7)
Power down (PDN = "L") (Note 8)
14
7
2
10
28
14
-
100
mA
mA
mA
A
High-Level Input Voltage
Low-Level Input Voltage
VIH
VIL
70%DVDD
DVSS-0.3
-
-
DVDD+0.3
30%DVDD
V
V
High-Level Output Voltage (Iout=-400
A)
Low-Level Output Voltage (Iout=400A)
VOH
VOL
DVDD-0.4
-
-
-
-
0.4
V
V
Input Leakage Current
Iin
-
-
10
A
Note 4. AVDD=DVDD=3.3V.
Note 5. fs=192kHz, X'tal=24.576MHz, PCKS1-0= "10" , C
L
=20pF. AVDD=5mA (typ), DVDD=9mA (typ).
Note 6. fs=48kHz, X'tal=24.576MHz, C
L
=20pF. AVDD=4mA (typ), DVDD=3mA (typ).
Note 7. fs=48kHz, X'tal=24.576MHz. The external load current is not included.
Note 8. RX inputs are open and all digital input pins are held at DVDD or DVSS.
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