Microprocessor And Ic Data - Marantz PMD680 Service Manual

6. MICROPROCESSOR AND IC DATA

QN02:PCM3000
BLOCK DIAGRAM
C PL
IN
C NL
IN
(+)
Analog
Front-End
V L
IN
Circuit
(Ð)
V L
REF
Reference
V R
REF
(Ð)
Analog
V R Front-End
IN
Circuit
(+)
C NR
IN
C PR
IN
Analog
V L Low-Pass
OUT
Filter
VCOM
Analog
V R Low-Pass
OUT
Filter
AGND2
NOTE: (1) FMT0, FMT1, FMT2 are for PCM3001 only.
Analog Front-End (Single-Channel).
2.2µF
15kΩ
V L
IN
1
+
V L
REF
4
+
4.7µF
Decimation
Delta-Sigma
and
Modulator
High Pass Filter
ADC
Decimation
Delta-Sigma
and
Modulator
High Pass Filter
Multi-Level Interpolation
Delta-Sigma Filter
Modulator 8X Oversampling
DAC
Multi-Level Interpolation
Delta-Sigma Filter
Modulator 8X Oversampling
Power Supply
V 2 AGND1 V 1 DGND V CLKIO
CC CC DD
C PL
IN
1kΩ
1kΩ
V
REF
LRCIN
BCKIN
Serial Data
Interface
DIN
DOUT
Loop Control
ML (FMT0) (1)
Mode
(1)
Control MC (FMT2)
Interface
MD (FMT1) (1)
Reset RSTB
Clock/OSC Manager
XTO XTI
470pF
C NL
10 9
IN
(+)
Delta-Sigma
Modulator
(Ð)
67
PIN ASSIGNMENTS PCM3000/3001
PIN NAME I/O DESCRIPTION
1 V L IN ADC Analog Input, Lch
IN
2 V 1 - ADC Analog Power Supply
CC
3 AGND1 - ADC Analog Ground
4 V L - ADC Input Reference, Lch
REF
5 V R - ADC Input Reference, Rch
REF
6 V R IN ADC Analog Input, Rch
IN
7 C PR - ADC Anti-alias Filter Capacitor (+), Rch
IN
8 C NR - ADC Anti-alias Filter Capacitor (Ð), Rch
IN
9 C NL - ADC Anti-alias Filter Capacitor (Ð), Lch
IN
10 C PL - ADC Anti-alias Filter Capacitor (+), Lch
IN
11 VCOM - DAC Output Common
12 V R OUT DAC Analog Output, Rch
OUT
13 AGND2 - DAC Analog Ground
14 V 2 - DAC Analog Power Supply
CC
15 V L OUT DAC Analog Output, Lch
OUT
16 LRCIN IN Sample Rate Clock Input (f
(2)
17 BCKIN IN Bit Clock Input
(2)
18 DIN IN Data Input
19 DOUT OUT Data Output
20 XTI IN Oscillator Input
21 XTO OUT Oscillator Output
22 CLKIO I/O Buffered Output of Oscillator or External Clock
(2)
Input
23 V - Digital Power Supply
DD
24 DGND - Digital Ground
25 MC/FMT2 IN Serial Control Bit Clock (PCM3000)/Data
Format Control 2 (PCM3001)
26 MD/FMT1 IN Serial Control Data (PCM3000)/Data Format
Control 1 (PCM3001)
27 ML/FMT0 IN Serial Control Strobe Pulse/Data Format
Control 0 (PCM3001)
(1, 2)
28 RSTB IN Reset
NOTES: (1) With 70kΩ typical internal pull-up resistor. (2) Schmitt trigger input.
(2)
)
S
(1, 2)
(1, 2)
(1, 2)