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PDF AK4112A Data sheet ( Hoja de datos )
| Número de pieza | AK4112A | |
| Descripción | High Feature 96kHz 24-bit DIR | |
| Fabricantes | Asahi Kasei Microsystems | |
| Logotipo |  |
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ASAHI KASEI
[AK4112A]
AK4112A
High Feature 96kHz 24bit DIR
GENERAL DESCRIPTION
The AK4112A is a digital audio receiver (DIR) compatible with 96kHz, 24bits. The channel status
decoding supports both consumer and professional modes. The AK4112A can automatically detect a
Non-PCM bit stream. When combined with an AK4527 multi channel codec, the two chips provide a
system solution for AC-3 applications. The dedicated pins or a serial uP I/F can control the mode setting.
The small package, 28pin VSOP saves the board space.
*AC-3 is a trademark of Dolby Laboratories.
FEATURES
o Supports AES/EBU, IEC958, S/PDIF, EIAJ CP1201
o Low jitter Analog PLL
o PLL Lock Range : 22k~108kHz
o Clock Source: PLL or X'tal
o 4 channel Receivers input and 1 through transmission output
o Auxiliary digital input
o De-emphasis for 32kHz, 44.1kHz, 48kHz and 96kHz
o Dedicated Detect Pins
· Non-PCM Bit Stream Detect Pin
· Validity Flag Detect Pin
· 96kHz Sampling Detect Pin
· Unlock & Parity Error Detect Pin
o Supports up to 24bit Audio Data Format
o Audio I/F: Master or Slave Mode
o 32bits Channel Status Buffer
o Burst Preamble bit Pc, Pd Buffer for Non-PCM bit stream
o Serial µP I/F
o Two Master Clock Outputs:128fs/256fs/512fs
o Operating Voltage: 2.7 to 3.6V with 5V tolerance
o Small Package: 28pin VSOP
o Ta: -40~85°C
MS0020-E-00
-1-
2000/3
1 page  
ASAHI KASEI
[AK4112A]
PIN/FUNCTION
No. Pin Name
I/O
Function
1 DVDD
2 DVSS
3 TVDD
V
4
TX
- Digital Power Supply Pin, 3.3V
- Digital Ground Pin
- Input Buffer Power Supply Pin, 3.3V or 5V
O Validity Flag Output Pin in Parallel Mode
O Transmit channel (through data) Output Pin in Serial Mode
5 XTI
I X'tal Input Pin
6 XTO
O X'tal Output Pin
7 PDN
I
Power-Down Mode Pin
When “L”, the AK4112A is powered-down and reset.
8R
9 AVDD
External Resistor Pin
- 18kW +/-1% resistor to AVSS externally.
- Analog Power Supply Pin
10 AVSS
- Analog Ground Pin
11 RX1
I
Receiver Channel 1
This channel is selected in Parallel Mode or default of Serial Mode.
DIF0
12
RX2
I Audio Data Interface Format 0 Pin in Parallel Mode
I Receiver Channel 2 in Serial Mode
DIF1
13
RX3
DIF2
14
RX4
I Audio Data Interface Format 1 Pin in Parallel Mode
I Receiver Channel 3 in Serial Mode
I Audio Data Interface Format 2 Pin in Parallel Mode
I Receiver Channel 4 in Serial Mode
15 AUTO
16 P/S
O
Non-PCM Detect Pin
“L”: No detect, “H” : Detect
I
Parallel/Serial Select Pin
“L”: Serial Mode, “H”: Parallel Mode
17 FS96
18 ERF
19 LRCK
20 SDTO
21 BICK
96kHz Sampling Detect Pin
O (RX Mode) “H” : fs=88.2kHz or more, “L” fs=54kHz or less.
(X’tal Mode) “H” : XFS96=1, “L” : XFS96=0.
O
Unlock & Parity Error Output Pin
“L”: No Error, “H”: Error
I/O Output Channel Clock Pin
O Audio Serial Data Output Pin
I/O Audio Serial Data Clock Pin
22 DAUX
I Auxiliary Audio Data Input Pin
23 MCK02
24 MCK01
OCKS0
25
CSN
O Master Clock #2 Output Pin
O Master Clock #1 Output Pin
I Output Clock Select 0 Pin in Parallel Mode
I Chip Select Pin in Serial Mode
OCKS1
26
CCLK
I Output Clock Select 1 Pin in Parallel Mode
I Control Data Clock Pin in Serial Mode
CM1
27
CDTI
I Master Clock Operation Mode Pin0 in Parallel Mode
I Control Data Input Pin in Serial Mode
CM0
28
CDTO
I Master Clock Operation Mode Pin1 in Parallel Mode
O Control Data Output Pin in Serial Mode
Note 1: All input pins except internal pull-down pins should not be left floating.
MS0020-E-00
-5-
2000/3
5 Page 
ASAHI KASEI
n Clock Source
The following circuits are available to feed the clock to XTI pin (#5 pin) of AK4112A.
1) X’tal
XTI
[AK4112A]
XTO
AK4112A
Note: External capacitance depends on the crystal oscillator (Typ. 10-40pF)
2) External clock
External Clock
XTI
XTO
AK4112A
Note: Input clock must not exceed DVDD.
3) Fixed to the Clock Operation Mode 0
XTI
XTO
AK4112A
MS0020-E-00
- 11 -
2000/3
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4112A.PDF ] | |
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