CMLMICRO MX609P

DATA BULLETIN
PCN/PCS DELTA
MODULATION CODEC
MX609
Features
Applications
Single Chip full Duplex CVSD CODEC
On-chip Input and Output Filters
Programmable Sampling Clocks
3- or 4-bit Companding Algorithm
Powersave Capabilities
Low Power, 5.0V Operation
Digital PCN/PCS Systems
Digital Cordless Phones
Digital Delay Lines
Digital Voice Storage
Multiplexers, Switches, and
Phones
Time Domain Scramblers
DATA ENABLE
ENCODER FORCE IDLE*
ENCODER INPUT
MOD
VDD
VSS
f1
XTAL/CLOCK
ENCODER
OUTPUT
f2
f0
XTAL
CLOCK RATE
GENERATORS
ENCODER DATA CLOCK
DECODER DATA CLOCK
VBIAS
MODE 1
CLOCK MODE
LOGIC
MODE 2
ALGORITHM
SAMPLING RATE
CONTROL
f3
POWERSAVE
DECODER INPUT
3 or 4 BIT
f1
DECODER
OUTPUT
DEMOD
DECODER FORCE IDLE*
*Available on J,P & LH
package styles only
The MX609 is a Continuously Variable Slope Delta Modulation (CVSD) Codec designed for use in cordless
telephones. The device is suitable for applications in delta multiplexers, switches and phones. Encoder input
and decoder output switched capacitor filters are incorporated on-chip.
Sampling clock rates can be programmed to 16, 32 or 64K bits/second from an internal clock generator or
externally injected in the 8 to 64K bits/second range. The internal clocks are derived from an on-chip
reference oscillator driven by an externally connected crystal. The sampling clock frequency is output for the
synchronization of external circuits.
The encoder has an enable function for use in multiplexer applications. When not enabled the encoder output
remains in a high-impedance “tri-state” mode.
Companding circuits may be operated with an externally selectable 3- or 4-bit algorithm. The device may be
put in standby mode when Powersave is selected.
The MX609 operates with a supply voltage of 5.0V and is available in the following packages: 24-pin PLCC
(MX609LH), 16-pin SOIC (MX609DW), 22-pin CERDIP (MX609J), and 22-pin PDIP (MX609P).
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 20480069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
2
MX609
CONTENTS
Section
Page
1 Block Diagram................................................................................................................ 3
2 Signal List....................................................................................................................... 4
3 External Components.................................................................................................... 6
4 General Description....................................................................................................... 6
5 Application ..................................................................................................................... 7
5.1
5.2
CODEC Integration.............................................................................................................. 7
CODEC Performance .......................................................................................................... 7
6 Performance Specification............................................................................................ 9
6.1
6.2
Electrical Performance ........................................................................................................ 9
6.1.1
Absolute Maximum Ratings.................................................................................................... 9
6.1.2
Operating Limits ..................................................................................................................... 9
6.1.3
Operating Characteristics..................................................................................................... 10
6.1.4
TIMING................................................................................................................................. 11
Packaging.......................................................................................................................... 12
MX-COM, Inc. reserves the right to change specifications at any time and without notice.
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
3
MX609
1 Block Diagram
DATA ENABLE
ENCODER FORCE IDLE*
ENCODER INPUT
MOD
VDD
VSS
f1
XTAL/CLOCK
f2
f0
XTAL
CLOCK RATE
GENERATORS
ENCODER DATA CLOCK
DECODER DATA CLOCK
VBIAS
MODE 1
MODE 2
CLOCK MODE
LOGIC
ALGORITHM
POWERSAVE
ENCODER
OUTPUT
SAMPLING RATE
CONTROL
3 or 4 BIT
f3
DECODER INPUT
f1
DECODER
OUTPUT
DEMOD
DECODER FORCE IDLE*
*Available on J,P & LH
package styles only
Figure 1: Block Diagram
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
4
MX609
2 Signal List
1
1
1
Xtal/Clock
input
2
2
3
2
Xtal
output
3
4
4
5
3
N/C
Encoder Data
Clock
input/
output
5
6
4
Encoder Output
output
6
7
-
Encoder Force Idle
7
8
5
Data Enable
8
9
9
10
6
N/C
Bias
10
11
7
Encoder Input
input
11
12
13
12
13
14
8
9
VSS
N/C
Decoder Output
power
14
15
15
16
10
16
17
18
-
17
19
11
Decoder Input
18
20
12
Decoder Data
Clock
19
21
13
Algorithm
Input to the clock oscillator inverter. A 1.024MHz Xtal input
or externally derived clock is injected here. See Clock Mode
pins and figure 3.
N/C
input
output
N/C
1998 MX-COM, Inc.
Powersave
Decoder Force Idle
input/
output
The 1.024 MHz output of the clock oscillator inverter.
No Connection
A logic I/O port. External encode clock input or internal data
clock output. Clock frequency is dependent upon Clock
Mode 1, 2 inputs and Xtal frequency (see Clock Mode pins).
The encoder digital output. This is a three-state output
whose condition is set by the Data Enable and
Powersave inputs. See Table 2:
When this pin is at a logical “0” the encoder is forced to an
idle state and the encoder digital output is 0101, a perfect
idle pattern. When this pin is a logical “1” the encoder
encodes as normal. Internal 1M pullup.
Data is made available at the encoder output pin by control
of this input. See Encoder Output pin. Internal 1 M pullup.
No Connection
Normally at VDD/2 bias, this pin should be externally
decoupled by capacitor C4. Internally pulled to VSS when
“ Powersave ” is a logical “0”.
The analog signal input. Internally biased at VDD/2, this
input requires an external coupling capacitor. The source
impedance should be less than 100. Output channel noise
levels will improve with an even lower source impedance.
See Figure 3.
Negative Supply
No Connection
The recovered analog signal is output at this pin. It is the
buffered output of a lowpass filter and requires external
components. During “Powersave” this output is open circuit.
No Connection
A logic “0” at this pin puts most parts of the codec into a
quiescent non-operational state. When at a logical “1”, the
codec operates normally. Internal 1 M pullup.
No Connection
A logic “0” at this pin gates a 0101... pattern internally to the
decoder so that the Decoder Output goes to VDD/2. When
this pin is a logical “1” the decoder operates as normal.
Internal 1M pullup.
The received digital signal input. Internal 1 M pullup.
A logic I/O port. External decode clock input or internal data
clock output, dependent upon clock mode 1,2 inputs. See
Clock Mode pins.
A logic “1” at this pin sets this device for a 3-bit companding
algorithm. A logical “0” sets a 4-bit companding algorithm.
Internal 1 M pullup.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
20
21
22
23
14
15
Clock Mode 2
Clock Mode 1
22
24
16
VDD
5
power
MX609
Clock rates refer to f = 1024MHz Xtal/Clock input. During
internal operation the data clock frequencies are available at
the ports for external circuit synchronization. Independent
or common data rate inputs to Encode and Decode data
clock ports may be employed in the External Clocks mode.
Internal 1M pullups.
Positive Supply. A single 5.0V supply is required.
Table 1: Signal List
Data Enable
Powersave
Encoder Output
1
1
Enable
0
1
High Z (open circuit)
1
0
VSS
Table 2: Encoder Output
Clock Mode 1
Clock Mode 2
Facility
0
0
External Clocks
0
1
Internal, 64kbps = f/16
1
0
Internal, 32kbps = f/32
1
1
Internal, 16kbps = f/64
Table 3: Clock Mode
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
6
MX609
3 External Components
VDD
XTAL/CLOCK
R1
X1
C2
C1
XTAL
ENCODER
DATA
CLOCK
ä
ENCODER OUTPUT
ä
DATA ENABLE
BIAS
ENCODER INPUT
C3
VSS
1
16
2
15
3
14
4
5
MX609DW
13
12
6
11
7
10
8
9
VDD
CLOCK MODE 1
CLOCK MODE 2
ALGORITHM
DECODER DATA CLOCK
DECODER INPUT
POWERSAVE
DECODER OUTPUT
C5
C4
Figure 2: Recommended External Components for Typical Application
10%
C4
Note 4
1.0F
20%
Note 2
1M
33pF
20%
C5
Note 5
Note 2
68pF
20%
X1
Note 6, 7
1.0F
1.024MHz
20%
C2
C3
Note 3
1.0F
20%
R1
Note 1
C1
Table 4: Recommended External Components for Typical Application
Notes:
1. Oscillator inverter bias resister
2. Xtal circuit load capacitor
3. Encoder input coupling capacitor. The drive source impedance to this input should be less than 100W.
Output idle channel noise levels will improve with even lower source impedance.
4. Bias decoupling capacitor
5. VDD decoupling capacitor
6. A 1.024MHz Xtal/Clock input will yield exactly 16/32/64kbps data clock rates. Xtal circuitry shown is in
accordance with MX-COM’s Xtal Oscillator Application Note.
7. For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at
least 40% of VDD, peak to peak. Tuning fork crystals generally cannot meet this requirement. To obtain
crystal oscillator design assistance, please consult you crystal manufacturer.
4 General Description
The MX609 is a Continuously Variable Slope Delta Modulation (CVSD) Codec designed for use in cordless
telephones. The device is suitable for applications in delta multiplexers, switches and phones. Encoder input
and decoder output switched capacitor filters are incorporated on-chip.
Sampling clock rates can be programmed to 16, 32 or 64K bits/second from an internal clock generator or
externally injected in the 8 to 64K bits/second range. The internal clocks are derived from an on-chip
reference oscillator driven by an externally connected crystal. The sampling clock frequency is output for the
synchronization of external circuits.
The encoder has an enable function for use in multiplexer applications. When not enabled the encoder output
remains in a high-impedance “tri-state” mode.
Companding circuits may be operated with an externally selectable 3- or 4-bit algorithm. The device may be
put in standby mode when Powersave is selected.
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
7
MX609
5 Application
5.1
CODEC Integration
MX609 PARAMETERS
MEASURED HERE
ANALOG
INPUT
INTERFACE
(BALUN &
BUFFER)
INPUT
MX609 PARAMETERS
MEASURED HERE
REGULATED
POWER SUPPLY
MX609
ENCODER
ANALOG
OUTPUT
INTERFACE
(BALUN &
BUFFER)
MX609
DECODER
CLOCK MODE
16/32/64 KB/S
DATA
CLOCKS
OUTPUT
DATA
CLOCKS
1.024MHz
1.024MHz
SYNCHRONOUS CLOCK
AND DATA SYSTEM
Figure 3: System Configuration using the MX609
5.2
CODEC Performance
Output
Gain
0
Input
Xtal
VDD
Data
-10
-20
dB
Level = -20dB
= 1.024MHz
= 5V
Clocks = 32kb/s
-30
-40
-50
0
1
2
3
4
5
6
7
8
Frequency (kHz)
Figure 4: Typical CODEC Frequency Response
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
8
MX609
Input Level = -20dB
35
30
64kb/s
25
20
S/N
(dB)
32kb/s
15
10
16kb/s
5
500
1000
1500
2000
2500
3000
3500
Frequency (Hz)
Figure 5: Typical S/N Ratio with Input Frequency
Sample Rate = 32 kb/s
Ref: 0dB Input Level = 489mVrms
∆ Gain (dB)
5
0
-5
ref.
-50
-40
-30
-20
-10
0
10
Input Level (dB)
Figure 6: Typical Variation of Gain with Input Level
35
Ref: 0dB Input Level = 489mVrms
Input Frequency = 820 Hz
30
S/N (dB)
64 kb/s
32 kb/s
20
16 kb/s
ref.
10
-40
-30
-20
-10
0
Input Level (dB)
Figure 7: Typical S/N Ratio with Input Level
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
9
MX609
6 Performance Specification
6.1
6.1.1
Electrical Performance
Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device.
Supply (VDD - VSS)
Voltage on any pin to VSS
Current
VDD
VSS
any other pin
J / P / LH / DW Packages
Total Allowable Power Dissipation at TAMB = 25°C
Derating above 25°C
Storage Temperature
Operating Temperature
6.1.2
Min.
-0.3
-0.3
Max.
7.0
VDD + 0.3
Units
V
V
-30
-30
-20
30
30
20
mA
mA
mA
-40
-40
800
10
85
85
mW
mW/°C above 25°C
°C
°C
Operating Limits
Correct operation of the device outside these limits is not implied.
Supply (VDD - VSS)
Operating Temperature
Xtal Frequency
1998 MX-COM, Inc.
Min
4.5
-30
500
Typ.
5.0
1.024
Max.
5.5
70
1500
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Units
V
°C
MHz
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
6.1.3
10
MX609
Operating Characteristics
For the following conditions unless otherwise specified:
VDD = 5.0V at TAMB = 25°C, Audio Test Frequency = 820Hz Xtal/Clock f0 = 1.024MHz
Sample Clock Rate = 32kbps, Audio level 0dB ref (0 dBm0) = 489mVRMS.
Static Values
Supply Voltage
Supply Current (Enabled)
Supply Current (Powersave)
Note
s
Min.
Typ.
Max.
Units
1
4.5
5.0
3.5
500
5.5
V
mA
Input logic ‘1’
Input Logic ‘0’
Output Logic ‘1’
Output Logic ‘0’
Digital input Impedance
Logic I/O pins
Logic Input pins, Pullup Resistor
3.5
1.5
4.0
1.0
10
2
A
V
V
V
V
M
300
k
Digital output impedance
4
k
Analog Input Impedance
100
k
800
4
0
A
dB
Analog Output Impedance
6
Three State Output Leakage
Insertion Loss
Dynamic Values
Encoder
Analog signal Input levels
Principal Integrator Frequency
Encoder passband
Compand Time Constant
Decoder
Analog Signal Output Levels
Decoder Passband
Encoder Decoder (Full Codec)
Passband
Stopband
Stopband Attenuation
Passband Gain
Passband Ripple
Output Noise (Input Short Circuit)
Perfect Idle Channel Noise
(Encode Forced)
Group Delay Distrotion
(1000Hz-2600Hz)
2
1
6
-30
8
dB
Hz
Hz
ms
8
dB
Hz
3400
10
-60
Hz
KHz
dB
dB
dB
dB
-63
dB
275
3400
4
6
3
-30
0
3400
300
6
60
0
-3
7
4
3
450
s
(600Hz-2800Hz)
750
s
(500Hz-3000Hz)
1.5
s
kHz
Xtal/clock Frequency
1998 MX-COM, Inc.
500
1024
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
1500
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
11
MX609
Notes:
1. Dynamic characteristics specified at 5.0V only.
2. All logic inputs except Encoder and Decoder Data clocks
3. With passband gain of 1dB.
4. Group Delay Distortion for the full codec is relative to the delay with and 820Hz, -20dB signal at the
encoder input
5. Relative timings are shown in figure 4
6. Recommended values
7. Forced idle Encode/Decode not available on DW package.
6.1.4
TIMING
Serial Bus Timings (See Figure 8)
tCH
Clock 1 pulse width
tCL
Clock 0 pulse width
tIR
tIF
tSU
tH
tSU +tH
Clock rise time
Clock fall time
Data set-up time
Data hold time
Data true time
Min.
1.0
Typ.
Max.
s
1.0
0
100
100
450
600
1.5
tPCO
Clock to output delay time
tDR
Data rise time
tDF
Data fall time
Xtal input frequency = 1.024MHz
Units
750
100
100
s
ns
ns
ns
ns
s
ns
ns
ns
ENCODER TIMING
ENCODER
CLOCK
tCH
tCH
tCL
t IR
tIF
DATA CLOCKED
ENCODER DATA
OUTPUT
tPCO
DECODER TIMING
DECODER
CLOCK
DATA CLOCKED
DECODER DATA
INPUT
tSU
tH
DATA TRUE TIME
ENCODER
OUTPUT
MULTIPLEXING FUNCTION
HIGH Z
HIGH Z
tDR
t DF
DATA ENABLE
Figure 8: Serial Bus Timing
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
6.2
12
MX609
Packaging
Package Tolerances
A
Z
ALTERNATIVE
PIN
LOCATION
MARKING
B
E
W
L
T
PIN 1
X
Y
C
H
K
P
J
DIM.
MIN.
TYP.
MAX.
0.413 (10.49)
0.395 (10.03)
0.299 (7.59)
0.286 (7.26)
0.093 (2.36)
0.105 (2.67)
0.390 (9.90)
0.419 (10.64)
0.003 (0.08)
0.020 (0.51)
0.013 (0.33)
0.020 (0.51)
0.041 (1.04)
0.016 (0.41)
0.050 (1.27)
0.050 (1.27)
0.009 (0.23)
0.0125 (0.32)
45°
0°
10°
5°
7°
5°
A
B
C
E
H
J
K
L
P
T
W
X
Y
Z
NOTE : All dimensions in inches (mm.)
Angles are in degrees
Figure 9: 16-pin SOIC (DW) Mechanical Outline: Order as part no. MX609DW
E
B
C
Package Tolerances
K
Y
DA
W
J
W
T
PIN 1
P
G
H
DIM.
A
B
C
D
E
F
G
H
J
K
P
T
W
Y
MIN.
TYP.
MAX.
0.409 (10.40)
0.380 (9.61)
0.409 (10.40)
0.380 (9.61)
0.146 (3.70)
0.128 (3.25)
0.435 (11.05)
0.417 (10.60)
0.435 (11.05)
0.417 (10.60)
0.250 (6.35)
0.250 (6.35)
0.023 (0.58)
0.018 (0.45)
0.022 (0.55)
0.047 (1.19)
0.048 (1.22)
0.051 (1.30)
0.049 (1.24)
0.009 (0.22)
0.006 (0.152)
30°
45°
6°
NOTE : All dimensions in inches (mm.)
Angles are in degrees
F
Figure 10: 24-pin PLCC (LH) Mechanical Outline: Order as part no. MX609LH
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
PCN/PCS Delta Modulation CODEC
13
MX609
Package Tolerances
A
B
E1
DIM.
A
B
C
E
E1
H
J
J1
K
L
P
T
Y
E
Y
T
PIN 1
K
C
H
L
J
J1
MIN.
TYP.
MAX.
1.100 (27.94)
0.360 (9.14)
1.080 (27.43)
0.330 (8.38)
0.185 (4.70)
0.420 (10.67)
0.480 (12.19)
0.390 (9.91)
0.420 (10.67)
0.020 (0.51)
0.045 (1.14)
0.015 (0.38)
0.020 (0.51)
0.040 (1.02)
0.065 (1.65)
0.066 (1.68)
0.128 (3.25)
0.100 (2.54)
0.010 (0.25)
7°
NOTE : All dimensions in inches (mm.)
Angles are in degrees
P
Figure 11: 22-pin PDIP (P) Mechanical Outline: Order as part no. MX609P
Package Tolerances
A
B
E1
E
T
PIN1
K
K1 C
H
L
J
J1
P
F
DIM.
A
B
C
E
E1
F
H
J
J1
K
K1
L
P
T
MIN.
TYP.
MAX.
1.080 (27.43)
1.060 (26.92)
0.384 (9.75)
0.376 (9.55)
0.165 (4.19)
0.230 (5.84)
0.466 (11.84)
0.515 (13.08)
0.408 (10.36)
0.418 (10.62)
1.000 (25.40)
0.020 (0.51)
0.018 (0.46)
0.055 (1.40)
0.058 (1.47)
0.080 (2.03)
0.075 (1.91)
0.080 (2.03)
0.115 (2.92)
0.171 (4.34)
0.100 (2.54)
0.0098 (0.249)
0.0102 (0.259)
NOTE : All dimensions in inches (mm.)
Angles are in degrees
Figure 12: 22-pin CERDIP (J) Mechanical Outline: Order as part no. MX609J
1998 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
Doc. # 204800069.005
All Trademarks and service marks are held by their respective companies.
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CML Product Data
In the process of creating a more global image, the three standard product semiconductor
companies of CML Microsystems Plc (Consumer Microcircuits Limited (UK), MX-COM, Inc
(USA) and CML Microcircuits (Singapore) Pte Ltd) have undergone name changes and, whilst
maintaining their separate new names (CML Microcircuits (UK) Ltd, CML Microcircuits (USA)
Inc and CML Microcircuits (Singapore) Pte Ltd), now operate under the single title CML
Microcircuits.
These companies are all 100% owned operating companies of the CML Microsystems Plc
Group and these changes are purely changes of name and do not change any underlying legal
entities and hence will have no effect on any agreements or contacts currently in force.
CML Microcircuits Product Prefix Codes
Until the latter part of 1996, the differentiator between products manufactured and sold from
MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX
respectively. These products use the same silicon etc. and today still carry the same prefixes.
In the latter part of 1996, both companies adopted the common prefix: CMX.
This notification is relevant product information to which it is attached.
CML Microcircuits (USA) [formerly MX-COM, Inc.] Product Textual Marking
On CML Microcircuits (USA) products, the ‘MX-COM’ textual logo is being replaced by a ‘CML’
textual logo.
Company contact information is as below:
CML Microcircuits
(UK)Ltd
CML Microcircuits
(USA) Inc.
CML Microcircuits
(Singapore)PteLtd
COMMUNICATION SEMICONDUCTORS
COMMUNICATION SEMICONDUCTORS
COMMUNICATION SEMICONDUCTORS
Oval Park, Langford, Maldon,
Essex, CM9 6WG, England
Tel: +44 (0)1621 875500
Fax: +44 (0)1621 875600
uk.sales@cmlmicro.com
www.cmlmicro.com
4800 Bethania Station Road,
Winston-Salem, NC 27105, USA
Tel: +1 336 744 5050,
0800 638 5577
Fax: +1 336 744 5054
us.sales@cmlmicro.com
www.cmlmicro.com
No 2 Kallang Pudding Road, 09-05/
06 Mactech Industrial Building,
Singapore 349307
Tel: +65 7450426
Fax: +65 7452917
sg.sales@cmlmicro.com
www.cmlmicro.com
D/CML (D)/2 May 2002