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AD1984BJCPZ 데이터시트(PDF) 10 Page - Analog Devices

부품명 AD1984BJCPZ
상세설명  High Definition Audio SoundMAX Codec
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Rev. 0
|
Page 10 of 20
|
February 2008
AD1984B
Table 4. Pin Function Descriptions
Mnemonic
Pin No.
I/O
Description
DIGITAL INTERFACE
SDATA_OUT
BIT_CLK
SDATA_IN
SYNC
RESET
5
6
8
10
11
I
I
I/O
I
I
Link Serial Data Output. AD1984B input stream. Clocked on both edges of the
BIT_CLK.
Link Bit Clock. 24.000 MHz serial data clock.
Link Serial Data Input. AD1984B output stream clocked only on one edge of BIT_CLK.
Link Frame Sync.
Link Reset. AD1984B master hardware reset.
DIGITAL I/O and EAPD
DM_1/2
DM_2
DM_CLK
GPIO_2
MIC_BIAS-E/GPIO_1
EAPD/GPIO_0
S/PDIF_OUT-2
S/PDIF_OUT-1
2
4
46
30
31
47
45
48
I
I
O
I/O
I/O
I/O
O
O
Digital microphone 1 and 2 Inputs (for Biphase Microphones), or Digital Microphone
1 Input (for Single-phase Microphones).
Digital microphone 2 Input (for Single-phase Microphones).
Clock to drive external digital microphones.
General Purpose Input/Output Pins. Digital signals used to control or sense external
circuitry.
Microphone Bias for Port E/General-Purpose Input/Output. Capable of High-Z, 1.65 V,
and 2.86 V. Pin 31 shares functionality between MIC_BIAS_E (default) and GPIO_1.
These functions are mutually exclusive and the MIC_BIAS function takes priority over
the GPIO function.
EAPD/General-Purpose Input/Output pin. Pin 47 shares functionality between
GPIO_0 and EAPD. These functions are mutually exclusive and the EAPD function
takes priority over the GPIO function. By default, the pin is in a High-Z state. External
resistors should be used to ensure the proper circuit state when this pin is in High-Z.
Supports S/PDIF Output. Typically used as an audio interface to an external HDMI
encoder.
Supports S/PDIF Output.
JACK SENSE
SENSE_A/SRC_B
SENSE_B/SRC_A
13
34
I/O
I/O
Jack Sense A-D Input/Sense B drive.
Jack Sense E-F Input/Sense A drive.
ANALOG I/O
PCBEEP
Port-E_L
Port-E_R
Port-F_L
Port-F_R
CD_GND
Port-B_L
Port-B_R
Port-C_L
Port-C_R
MONO_OUT
Port-D_L
Port-D_R
Port-A_L
Port-A_R
12
14
15
16
17
19
21
22
23
24
32
35
36
39
41
LI
LI, MIC, LO
LI, MIC, LO
LI, LO
LI, LO
I
LI, MIC
LI, MIC
LI, MIC
LI, MIC
LO
HP, LO
HP, LO
HP, LO
HP, LO
Monaural Input from System for Analog PCBeep.
Auxiliary Input/Output Left Channel.
Auxiliary Input/Output Right Channel.
Auxiliary Input/Output Left Channel.
Auxiliary Input/Output Right Channel.
CD-Audio-Analog-Ground-Reference. Must be connected to AGND via a 0.1
μF
capacitor if not in use as CD_GND. MUST always be ac-coupled.
Front Panel Stereo MIC/Line-In.
Front Panel Stereo MIC/Line-In.
Rear Panel Stereo MIC/Line-In.
Rear Panel Stereo MIC/Line-In.
Monaural Output to Internal Speaker or Telephony Subsystem Speakerphone.
Rear Panel Headphone/Line-Out.
Rear Panel Headphone/Line-Out.
Front Panel Headphone/Line-Out.
Front Panel Headphone/Line-Out.
The symbols used in this table are defined as: I = input, O = output, LI = line level input, LO = line level output, HP = output capable of driving
headphone load, MIC = input supports microphones with MIC bias and boost amplifier.


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