Texas Instruments CC2500 User Manual

CC2500
S
WRS040
C
Page
16
of
89
Pin #
Pin N
ame
Pin T
ype
Description
1
SCLK
Digital Input
Serial configuration interface, clock input
2
SO
(
GDO1
)
Digita
l Output
Serial configuration interface, data output.
Optional general output pin when
CSn
is high
3
GDO2
Digital Output
Digital output pin for general use:

Test signals

FIFO status signals

Clear Channel Indicator

Clock output, down
-
divided from XOSC

Se
rial output RX data
4
DVDD
Power (Digital)
1.8
-
3.6 V digital power supply for digital I/O’s and for the digital core
voltage regulator
5
DCOUPL
Power (Digital)
1.6
-
2.0 V digital power supply output for decoupling.
NOTE: This pin is intended for use
with the
CC2500
only. It can not be
used to provide supply voltage to other devices.
6
GDO0
(
ATEST
)
Digital I/O
Digital output pin for general use:

Test signals

FIFO status signals

Clear Channel Indicator

Clock output, down
-
divided from XOSC

Serial outp
ut RX data

Serial input TX data
Also used as analog test I/O for prototype/production testing
7
CSn
Digital Input
Serial configuration interface, chip select
8
XOSC_Q1
Analog I/O
Crystal oscillator pin 1, or external clock input
9
AVDD
Power (Analog)
1.
8
-
3.6 V analog power supply connection
10
XOSC_Q2
Analog I/O
Crystal oscillator pin 2
11
AVDD
Power (Analog)
1.8
-
3.6 V analog power supply connection
12
RF_P
RF I/O
Positive RF input signal to LNA in receive mode
Positive RF output signal from PA in
transmit mode
13
RF_N
RF I/O
Negative RF input signal to LNA in receive mode
Negative RF output signal from PA in transmit mode
14
AVDD
Power (Analog)
1.8
-
3.6 V analog power supply connection
15
AVDD
Power (Analog)
1.8
-
3.6 V analog power supply con
nection
16
GND
Ground (Analog)
Analog ground connection
17
RBIAS
Analog I/O
External bias resistor for reference current
18
DGUARD
Power (Digital)
Power supply connection for digital noise isolation
19
GND
Ground (Digital)
Ground connection for digita
l noise isolation
20
SI
Digital Input
Serial configuration interface, data input
Table
13
: Pinout
O
verview

Texas Instruments CC2500 Specifications

General

Brand	Texas Instruments
Model	CC2500
Category	Transceiver
Language	English