CMX649E3 CML Microcircuits, CMX649E3 Datasheet - Page 3

• Manufacturer Part Number: CMX649E3
• Description: ADM Codec
• Manufacturer: CML Microcircuits

ADM Codec
2.
MIC OUT
2002 CML Microsystems Plc
AUDIO OUT
MIC -
VBIAS
MIC +
VDD
VSS
RPLY
CMD
IRQN
SCK
CSN
Block Diagram
-
+
VREF
INTERFACE
CONTROL
SIDETONE
CONTROL
$64 & $65
REG $63
ANALOG
REG $62
POWER
CBUS
AUDIO
LEVEL
REGS
VOL &
REG $61
AAF/AIF
BW
ANTI-ALIAS FILTER
PROGRAMMABLE
ANTI-IMAGE FILTER
PROGRAMMABLE
SIDETONE
SCALER
DIVIDER
DIVIDER
FILTER
FILTER
CLOCK
AUDIO
AUDIO
PRE-
+
+
-
$D2 &
VAD
$D4
$E2 &
VAD
$E4
OUTPUT
REG $E6
OUTPUT
REG $D6
Figure 1 Block Diagram
PCM
PCM
STATUS
REG $80
+
REG $E7
REG $D7
+
INPUT
INPUT
PCM
PCM
PCM TO ADM TRANSCODE FEEDBACK
PCM TO ADM TRANSCODE FEEDBACK
REG $81
IRQ CTL
3
ENCODER FEEDBACK
1
1
st
st
ESTIMATOR INTEGRATORS
ESTIMATOR INTEGRATORS
LINEAR
PCM IN
ENCODE
REG $E0
DECODE
REG $D0
SETUP
SETUP
PCM OUT
OFFSET NULLING
OFFSET NULLING
LINEAR
REGS $D3 & $D5
REGS $E3 & $E5
/A LAW TO
LINEAR
REG $70
MODE
BUFFER
ADM CTL
REG $E1
DATA IN
ADM CTL
REG $D1
2
2
LINEAR TO
nd
nd
/A LAW
CONTROL
DIVIDER
REG $72
CLOCK
DE-SCRAMBLER REG $71
x
x
PROGRAMMABLE
ADM IN
REGISTER
REGISTER
DELAY
DELAY
PROGRAMMABLE
BIT PRE-
PROGRAMMABLE
SCALER
STEP SIZE
STEP SIZE
CONTROL
CONTROL
REG $E8
INPUT
ADM
DATA OUT
BUFFER
OSCILLATOR
RECOVERY
ENCODE &
Q
DIVIDERS
BIT CLKS
DECODE
CLOCK
D
SCRAMBLER REG $71
REG $DA
REG $D8
OUTPUT
INPUT
REG $EA
ADM
ADM
OUTPUT
PROGRAMMABLE
ADM
CONTROL
SOURCE
REG $73
CLOCK
0
1
ADM OUT
1
0
TX DATA
ENC VAD
RX CLK/BURST CLK
STROBE
DEC VAD
XTAL/CLOCK
TX CLK
RX DATA
CMX649
D/649/1