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Simplified Block Diagram
PCM
Interface
Digital
ADC
DAC
ADC
DAC
ADC
DAC
ADC
DAC
VXI0-
VRO0
AVCC0
AGND0
AVCC1
AGND1
DVCC
DGND
MCLK
DX
DR
FSX0-3
TSx
FIGURE 1. Simplified block diagram
Signal
Processor
-
+
GXO0
VXI1-
VRO1
-
+
GXO1
VXI2-
VRO2
-
+
GXO2
VXI3-
VRO3
-
+
GXO3
FSR0-3
A/u Law
PDN0-3
TST
PCMMode
NF
PT1 PT2
PLL
Clock
Detection
Ref & Bias
PT3 PT4