AD1892JR Analog Devices Inc, AD1892JR Datasheet - Page 19

• Manufacturer Part Number: AD1892JR
• Description: IC SAMPLE CONV W/RX 20BIT 28SOIC
• Manufacturer: Analog Devices Inc
• Type: Sample Rate Converterr

Specifications of AD1892JR

• Rohs Status: RoHS non-compliant
• Applications: Players, Recorders
• Voltage - Supply, Digital: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Voltage - Supply, Analog: -

REV. 0
Figure 32. Multiple AD1892 Synchronization Using SYNC
AES/EBU INPUT
3V–10V p-p
1
CONTROLLER,
CONTROLLER,
SWITCH, ETC.
3
110
FROM DSP,
S/PDIF INPUT
CONNECTOR
RCA PHONE
DSP, ETC.
TO LEDS,
CONSUMER
75
AD1892
AD1892
AD1892
2
CONN
CHANNEL STATUS REGISTER
BAT54S OR BAS70-04
1
4
2
1:1
MCLK
MCLK
MCLK
SYNC
SYNC
SYNC
SYNCHRONIZATION
REGISTER
75
Q0
Q1
Q2
Q3
Q4
Q5
CE CLK
D TYPE
38R3
38R3
D0
D1
D2
D3
D4
D5
INPUT
28
23
28
23
28
23
0.01 F
0.01 F
1
1
DVDD
2
DVDD
2
3
3
16R5
16R5
21
20
19
18
17
15
16
23
BAT54S OR BAS70-04
13
14
512
CA
CB
CC
CD
CE
CON/PRO
CSCLK
SYNC
RXN
RXP
DVDD
Figure 33. Microcontroller Application Circuit
1k
1k
22
SYSTEM WORD
CLOCK
DV
512 x F
AD1892
+5V
10nF
10nF
DD
0.01 F
SOUT
DGND
7
14
13
PD/RST
ERROR
SDATA
LRCLK
U/CBIT
SFCLK
NOSIG
AD1892
MCLK
MUTE
BCLK
CCLK
QDFS
RXP
RXN
SDO
SDI
INT
CS
26
24
25
27
1
3
2
4
5
28
12
11
10
6
9
8
–19–
Q-CHANNEL SUBCODE BLOCK START
Mute
The AD1892 offers two methods of muting the digital audio
output. There is an external mute input (MUTE, Pin 27) that
“hardware” mutes the AD1892 digital audio output when
asserted HI. This input should be LO for normal operation. The
AD1892 digital audio output can also be “software” muted
through a write to Control Register 1, position D7. Writing a 1
mutes the digital audio output; writing a 0 (default) unmutes
the output.
The AD1892 mutes the digital audio output automatically when
the digital audio receiver is not locked to the incoming biphase
mark encoded stream, or when no biphase-mark signal is ap-
plied to the input of the AD1892 (i.e., NOSIG = 1). When
NOSIG is deasserted (LO), the digital audio output from the
AD1892 is immediately unmuted. The AD1892 automatically
repeats the last valid sample when a parity error or validity error
is encountered.
APPLICATIONS CIRCUITS
A typical microcontroller-oriented application circuit for the
AD1892 is shown in Figure 33.
A typical stand-alone application circuit for the AD1892 is
shown in Figure 34.
19
20
18
SUB-FRAME STATUS REGISTER
ACTIVE HI MUTE
ACTIVE LO POWER-DOWN/RESET
512 x F
+2
SCLK
SDATA
LRCLK
MCLK
1
SOUT
AD1857
REGISTER
D0
D1
D2
CLK
DAC
CLOCK
D TYPE
384/256
6
Q0
Q1
Q2
CE
OUTR
OUTL
NO BIPHASE-MARK
SIGNAL ON INPUT
CS
CCLK
SDO
SDI
USER/CHANNEL STATUS BIT
13
8
FROM DSP,
SWITCH, ETC.
OR VALIDITY ERROR
CONTROLLER,
PARITY ERROR
ERROR BIT =
LEFT LINE OUTPUT
RIGHT LINE OUTPUT
INTERRUPTS
OR MICROPROCESSOR
INTERRUPT =
TRACK NUMBER CHANGE
OR CHANNEL STATUS
CHANGE
MICROCONTROLLER
AD1892
SPI COMPATIBLE
OPTIONAL