CMX661 查看數據表（PDF） - MX-COM Inc
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CMX661 Datasheet PDF : 14 Pages
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Pair Gain Dual SPM Detector
2. Signal List
Page 4 of 14
CMX661 Advance Information
Packages
D4
Pin No.
1
P3
Pin No.
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
Signal
Name
XTAL
XTALN
CH2 OP
CH1 OP
CH1 AMP OUT
CH1 AMP IN (-)
CH1 AMP IN (+)
VSS
CH2 AMP IN (+)
CH2 AMP IN (-)
CH2 AMP OUT
OP ENABLEN
D0
D1
SYSTEM SELECT
VDD
Type
Description
Input
Output
Output
Output
Output
Input
Input
Power
Input
Input
Output
Input
Input
Input
Input
Power
The input of the on-chip oscillator for use with a
3.579545MHz Xtal in conjunction with the XTALN
output; circuit components are on-chip.
The inverted output of the on-chip oscillator.
The digital output of the Channel 2 SPM detector, when
enabled. Logic '0' (low) when tone is detected.
The digital output of the Channel 1 SPM detector, when
enabled. Logic '0' (low) when tone is detected.
The output of the Channel 1 input amplifier.
See Figure 2 and Figure 3.
The negative input to the Channel 1 input amplifier.
See Figure 2 and Figure 3.
The positive input to the Channel 1 Input amplifier.
See Figure 2 and Figure 3.
The negative supply rail (ground).
The positive input to the Channel 2 input amplifier.
See Figure 2 and Figure 3.
The negative input to the Channel 2 input amplifier.
See Figure 2 and Figure 3.
The output of the Channel 2 input amplifier.
See Figure 2 and Figure 3.
For multi-chip output multiplexing; controls the state of
both Channel 1 and Channel 2 outputs. When this
input is placed high (logic ‘1’) both outputs are set to a
high impedance. When placed at logic '0' (low) both
outputs are enabled.
The LSB of the two bits, which set the 'Will Decode'
bandwidth of the CMX661.
The MSB of the two bits, which set the 'Will Decode'
bandwidth of the CMX661.
Selects the system frequency. High (logic ‘1’) = 12kHz;
Low (logic ‘0’) = 16kHz. This signal has an internal pull-
up resistor, so if left unconnected the CMX661 will
detect 12kHz by default.
The positive supply rail. Critical levels and voltages
within the CMX661 are dependent upon this supply.
This pin should be decoupled to VSS by a capacitor
mounted close to the device pins.
Table 1: Signal List
©2001 MX-COM, INC.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480228.001
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
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