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TCM4300IPZ Datasheet(PDF) 13 Page - Texas Instruments

Part # TCM4300IPZ
Description  Advanced RF Cellular Telephone Interface Circuit (ARCTIC 田?
PDF  69 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCM4300IPZ Datasheet(HTML) 13 Page - Texas Instruments

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1–7
1.4
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
SCEN
94
O
Speech CODEC enable. A high out from SCEN can enable the speech CODEC.
SINT
79
O
Sample interrupt. SINT is active low. In the analog mode, SINT occurs at 40 kHz; in the
digital mode, SINT occurs at 48.6 kHz.
SYNCLK
32
O
Synthesizer clock. SYNCLK clocks the serial data stream.
SYNDTA
31
O
Synthesizer serial-data. SYNDTA provides the serial bit stream output.
SYNLE0
28
O
Synthesizer 0, 1, and 2 latch enables. An active high on SYNLE0, SYNLE1, and
SYNLE1
29
O
SYNLE2 indicates that the latch is enabled.
SYNLE2
30
O
SYNOL
27
I
Synthesizer out-of-lock. An active high at SYNOL indicates a synthesizer is not locked.
TXEN
23
O
Transmit power enable. An active high output from TXEN can be used to enable various
system transmitter-circuit devices.
TXIN
18
O
In-phase differential negative baseband transmit. The negative component of the
differential baseband transmit signal is output from TXIN.
TXIP
17
O
In-phase differential positive baseband transmit. The positive component of the
differential baseband transmit signal is output from TXIP.
TXONIND
24
I
Transmit on indicator. A signal is applied to TXONIND to indicate that power is applied
to the power amplifier.
TXQN
21
O
Quadrature differential negative baseband transmit. The negative component of the
quadrature differential transmit signal is output from TXQN.
TXQP
20
O
Quadrature differential positive baseband transmit. The positive component of the
quadrature differential transmit signal is output from TXQP.
VCM
15
I
Voltage common mode. VCM establishes the dc operating point for transmit outputs and
can be tied to VHR.
VHR
14
O
Voltage half-rail. The voltage level at VHR is approximately 0.5
× AVDD. VHR
establishes the dc operating point for receive inputs.
VSS
13, 97
—
Substrate ground
XTAL
66
I
Crystal input. A crystal connected between XTAL and MCLIN forms an oscillator circuit.



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