with an integrated power-down mode, make it ideal for
portable applications.
The PCM3500 integrates all of the functions needed for
a modem or voice CODEC, including delta-sigma
digital-to-analog and analog-to-digital converters, in-
put anti-aliasing filter, digital high-pass filter for DC
blocking, and an output low-pass filter. The synchro-
nous serial interface provides for a simple, or glue-free
interface to popular DSP and RISC processors. The
serial interface also supports Time Division Multiplex-
ing (TDM), allowing up to four CODECs to share a
single 4-wire serial bus.
V
IN
AAF
AGND
V
REF
1
V
COM
V
REF
2
V
OUT
SMF
AGND
Reference
鈭單?/div>
Modulator
(ADC)
Decimation
Digital Filter
HPF
FS
BCK
DIN
Loop
Serial I/O Interface
DOUT
Multi-Level
DAC
鈭單?/div>
Modulator
Interpolation
Digital Filter
Clock
Gen/
OSC
FSO
SCKIO
Power
Mode Control
V
CC
AGND
DGND
V
DD
PDWN
LOOP
HPFD
M/S
TSC
XTO
XTI
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111
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