FX619 Consumer Microcircuits Limited, FX619 Datasheet - Page 4

• Manufacturer Part Number: FX619
• Description: Delta Codec
• Manufacturer: Consumer Microcircuits Limited

Codec Integration
Component
Fig.2 Eurocom System Configuration – showing the FX619, which with the indicated interfacing, will conform to
the Eurocom Basic Parameters Specification D1 – IA8.
Fig.3 Recommended External Components
R
R
C
C
C
C
C
X
1
1
2
1
2
3
4
5
EUROCOM
INPUT
C
2
C
1
C
Unit Value
Selectable
4
INTERFACE
ANALOGUE
1.024 MHz
X
EUROCOM
BUFFER)
1
(BALUN
INPUT
1.0
1.0
1.0
R
33p
33p
1M
2
&
ENCODER DATA CLOCK
ENCODER FORCE IDLE
FX619 PARAMETERS
ENCODER OUTPUT
MEASURED HERE
C
ENCODER INPUT
3
DATA ENABLE
R
1
Tolerance :– Resistors
XTAL/CLOCK
Note –
Oscillator Inverter bias resistor.
Xtal Drive limiting resistor.
Xtal Circuit drain capacitor.
Xtal Circuit gate capacitor.
Encoder Input coupling capacitor – The drive source impedance to this
input should be less than 100 . Output Idle channel noise levels will
improve with an even lower source impedance.
Bias decoupling capacitor.
V
A 1.024 MHz Xtal/clock input will yield exactly 16/32/64 kb/s data clock
rates. Xtal circuitry shown is in accordance with CML application note
D/XT/1 April 1986.
1.024 MHz
XTAL
BIAS
DD
N/C
V
N/C
SS
ENCODER
decoupling capacitor.
FX619
DATA
with reference to Figure 3 (below)
CLOCKS
1
2
3
4
5
6
7
8
9
10
11
SYNCHRONOUS CLOCK
REGULATED POWER
DATA SYSTEM
FX619J
CLOCK MODE
16/32/64kb/s
SUPPLY
AND
V
V
DD
SS
4
10% Capacitors
DATA
DECODER
22
21
20
19
18
17
16
15
14
13
12
FX619
CLOCKS
1.024 MHz
FX619 PARAMETERS
MEASURED HERE
CLOCK MODE 1
CLOCK MODE 2
ALGORITHM
DECODER DATA CLOCK
DECODER INPUT
DECODER FORCE IDLE
POWERSAVE
N/C
DECODER OUTPUT
N/C
V
DD
20%
ANALOGUE
INTERFACE
EUROCOM
BUFFER)
OUTPUT
(BALUN
&
EUROCOM
OUTPUT
C
5