
Q218: HIGH FEATURE96kHz 24bit DIR (AK4112BVF)-3
PIN DESCRIPTION
No. Pin Name I/O Function
V O Validity Flag Output Pin in Parallel Mode
1TX O Transmit channel (through data) Output Pin in Serial Mode
2 XTI I X'tal Input Pin
3 XTO O X'tal Output Pin
4PDN I Power-Down Mode Pin
When “L”, the AK4112B is powered-down and reset.
5R - External Resistor Pin
18kΩ+/-1% resistor to AVSS externally.
6 AVDD - Analog Power Supply Pin
7 AVSS - Analog Ground Pin
8 RX1 I Receiver Channel 1
This channel is selected in Parallel Mode or default of Serial Mode.
DIF0 I Audio Data Interface Format 0 Pin in Parallel Mode
9RX2 I Receiver Channel 2 in Serial Mode
DIF1 I Audio Data Interface Format 1 Pin in Parallel Mode
10 RX3 I Receiver Channel 3 in Serial Mode
DIF2 I Audio Data Interface Format 2 Pin in Parallel Mode
11 RX4 I Receiver Channel 4 in Serial Mode
12 AUTO O Non-PCM Detect Pin
“L”: No detect, “H” : Detect
13 P/SN IParallel/Serial Select Pin
“L”: Serial Mode, “H”: Parallel Mode
14 FS96 O
96kHz Sampling Detect Pin
(RX Mode) “H” : fs=88.2kHz or more, “L” fs=54kHz or less.
(X’tal Mode) “H” : XFS96=1, “L” : XFS96=0.
15 ERF O Unlock & Parity Error Output Pin
“L”: No Error, “H”: Error
16 LRCK I/O Output Channel Clock Pin
17 SDTO O Audio Serial Data Output Pin
18 BICK I/O Audio Serial Data Clock Pin
19 DAUX I Auxiliary Audio Data Input Pin
20 MCK02 O Master Clock #2 Output Pin
21 MCK01 O Master Clock #1 Output Pin
OCKS0 I Output Clock Select 0 Pin in Parallel Mode
22 CSN I Chip Select Pin in Serial Mode
OCKS1 I Output Clock Select 1 Pin in Parallel Mode
23 CCLK I Control Data Clock Pin in Serial Mode
CM1 I Master Clock Operation Mode Pin0 in Parallel Mode
24 CDTI I Control Data Input Pin in Serial Mode
CM0 I Master Clock Operation Mode Pin1 in Parallel Mode
25 CDTO O Control Data Output Pin in Serial Mode
26 DVDD - Digital Power Supply Pin, 3.3V
27 DVSS - Digital Ground Pin
28 TVDD - Input Buffer Power Supply Pin, 3.3V or 5V
Note 1: All input pins except internal pull-down pins should not be left floating.
A-5VL
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION