MX604 查看數據表（PDF） - MX-COM Inc
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MX604 Datasheet PDF : 17 Pages
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v.23 Compatible Modem
2. Signal List
4
MX604 PRELIMINARY INFORMATION
Pin No.
P, DW
TN
1
1
2
2
3
5
4
6
5
7
6
8
7
11
8
12
9
13
10
14
11
17
12
18
13
19
14
20
15
23
16
24
3, 4, 9, 10 ,15,
16, 21, 22
Name
XTAL
XTAL/CLOCK
M0
M1
RXIN
RXAMPOUT
TXOUT
VSS
VBIAS
RXEQ
TXD
CLK
RXD
DET
RDY
VDD
N/C
Type
Description
output
input
input
input
input
output
output
power
output
input
input
input
output
output
output
power
Output of the on-chip Xtal oscillator inverter.
Input to the on-chip Xtal oscillator inverter.
A logic level input for setting the mode of the device.
See section 4.2
A logic level input for setting the mode of the device.
See section 4.2
Input to the Rx input amplifier.
Output of the Rx input amplifier.
Output of the FSK generator.
Negative supply (ground).
Internally generated bias voltage, held at VDD /2
when the device is not in 'Zero-Power' mode.
Should be decoupled to VSS by a capacitor
mounted close to the device pins.
A logic level input for enabling/disabling the
equalizer in the receive filter. See section 4.4
A logic level input for either the raw input to the FSK
Modulator or data to be re-timed depending on the
state of the M0, M1 and CLK inputs.
See section 4.9
A logic level input which may be used to clock data
bits in/out of the FSK Data Retiming block.
A logic level output carrying either the raw output of
the FSK Demodulator or re-timed characters
depending on the state of the M0, M1 and CLK
inputs. See section 4.8
A logic level output of the on-chip energy detect
circuit.
"Ready for data transfer" output of the on-chip data
retiming circuit. This open-drain active low output
may be used as an Interrupt Request/Wake-up
input to the associated C. An external pull-up
resistor should be connected between this output
and VDD.
The positive supply rail. Levels and thresholds
within the device are proportional to this voltage.
Should be decoupled to VSS by a capacitor
mounted close to the device pins.
No internal connections
This device is capable of detecting and decoding small amplitude signals. Achieving the VDD and VBIAS
decoupling and protection of the receive path from extraneous in-band signals is very important. It is
recommended that decoupling capacitors be placed so the connection between them and the device pins is
as short as possible. A ground plane protecting the receive path will help attenuate interfering signals.
1998 MXCOM, INC.
Tele: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480152.004
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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