Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
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Features
• Class 2 and 3 (up to 10 meter range) compliant
with Bluetooth Specification 1.1
• Fully integrated single-chip transceiver with on-
chip PLL, VCO, LNA, up/down converter, and
digital GFSK modem
• Seamless interface to BlueRF RXMODE2 with
unidirectional / JTAG serial interface or
bidirectional / DBUS serial interface
• Up to -90dBm receiver sensitivity
• Superior adjacent channel selectivity of -6 at 1MHz
offset
• Support dual reference clock frequency: 13/16MHz
• Bluetooth BQB QPL qualified - ID = B00992
General Descriptions
The PT8R1002 is a part of the PTI Bluetooth product
family. It is a short-range microwave-frequency radio
transceiver for Bluetooth links that operates in the
2.4 GHz to 2.5 GHz ISM band. The device consists
of a fully integrated 2.4 GHz radio transceiver with
GFSK modem. This radio IC is based on PTI’s
proprietary radio architecture employing direct
conversion scheme, which offers superior channel
selectivity, and is implemented in CMOS technology,
which provides low cost integrated RF and baseband
solutions for Bluetooth applications.
The PT8R1002 incorporates the complete receive and
transmit components including PLL, VCO, LNA, up/
down converter, channel select filters, and digital
GFSK modem.
Application
• ISM 2.4GHz wireless systems
• Mobile phones and Handset
Block Diagram
XTALIN
Clock
Generator
Reference
divier
PFD
XTALOUT
DATACLK
Loop
Filter
Prescaler
LO
generation
Frequency Synthesizer
DA
GFSK
Modulator
TXDATA
TXDATA_EN
v
VGA
DA
∑
VGA
PA
RF_OUT
MDSEL
TXACTIVE
RXACTIVE
TCL
TMS
TDI
TDO
SYNCDETECT
RESET
GFSK
Demodulator
AD
VGA v
DA
PA_CNT
RF
control
Fast DC
Cancellation
Automatic Filter
Calibration
RF power
measure
Gain
Control
LNA
RF_IN
RXDATA
AD
VGA
PT0124(12/04)
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Ver:2
Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
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Pin Information
Pin Configuration
V CO_V CC
32
40
39
38
37
36
35
34
33
31
AN_VCC
AN_VCC
TEST_P1
TEST_P2
TEST_P3
TEST_P4
TEST_P5
DIG_VCC
TXACTIVE
RXACTIVE
1
2
3
4
5
6
7
8
9
10
11
RX D AT A
12
TXDATA
13
TXDATA_ EN
14
DATACLK
15
IO_ V CC
16
R ESET
17
TCK
18
TDO
19
TDI
20
TMS
V CO_V CC
RF _V C C
PA_ C NT
RF_V C C
RF_OUT
M DSEL
RF_I N
NC
NC
30
29
28
27
TEST_P6
N/C
N/C
VCO_VCC
VCO_VCC
AN_VCC
AN_VCC
XTALIN
XTALOUT
SYNCDETECT
PT8R1002
(40pin 6mm X 6mm QFN)
26
25
24
23
22
21
Ordering Information
Pa r t Numbe r R e pr e s e nt a t ion
De vice
Compone nt s
Pa ck ing
Lot Tr a ve le r
Tray
Normal
T&R
Q F N 40
Tray
Pb(Lead) Free
T&R
PT0124(12/04)
L a be l
PT8R1002ZB
PT8R1002ZBX
PT8R1002ZBE
PT8R1002ZBXE
M a r k ing
PT8R1002ZB
PT8R1002ZB
PT8R1002ZBE
PT8R1002ZBE
Ver:2
PT8R1002ZB
PT8R1002ZBX
PT8R1002ZBE
PT8R1002ZBXE
2
Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
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Pin Description
P in No
1, 2, 24,
25
3, 4
5, 6, 7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
26, 27,
31, 32
28, 29,
35, 36
30
33, 38
34
37
39
40
P in Na me
AN_VCC
TEST_P1,
TEST_P2
TEST_P3 -
TEST_P5
DIG_VCC
TXACTIVE
RXACTIVE
RXDATA
TXDATA
TXDATA_EN
DATACLK
IO_VCC
RESET
TCK
TDO
TDI
TMS
SYNCDETECT
XTALOUT
XTALIN
VCO_VCC
Typ e
Power
Descr ip t ion
Power supply for analog baseband core (2.7V)
serial data, test purpose only (see note3)
serial data, test purpose only (see note3)
supply for digital core (2.7V)
transmitter enable, active high
receiver enable, active high
serial data, receive data
serial data, transmit data
active high, timing reference of valid data
clock, 13/16MHz reference data clock
supply for digital I/O (3.3V)
active low, reset signal for internal registers
clock, a serial register interface clock
serial data, Phy control register serial data output
serial data, Phy control register serial data input
serial data, control signal of Phy's TAP controller
active high, indication of SYNC word detection
clock, reference crystal output (see note2)
clock, reference crystal input (see note2)
supply for PLL block (2.7V)
No connection
analog, test purpose only (see note3)
supply for RF block (2.7V)
analog, 2.4GHz transmitted signal from internal PA
analog, 2.4GHz received signal from antenna
analog, power control to external power amplifier
select data, BlueRF™ directional mode selection pin (see note1)
DO/AO
DO
Power
DI
DI
DO
DB
DI
DO
Power
DI
DI
DB
DI
DI
DI
AO
AI
Power
NC
TEST_P6
RF_VCC
RF_OUT
RF_IN
PA_CNT
MDSEL
-
AO
Power
AO
AI
AO
DI
PT0124(12/04)
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Ver:2
Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
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Note :
1. The pin indicates the directional mode of BlueRF™ RXMODE2.
Pin Name
MDSEL
TXACTIVE
RXACTIVE
TXDATA_EN
TXDATA
I/O
DI
DI
DI
DI
DB
Type
select data
active high
active high
active high
serial data
BlueRF™ RXMODE2
BlueRF RXMODE2
LOW
Don’ t use
Don’ t use
Don’ t use
BTXD
Transmit (DI), Receiver (DO)
RXDATA
SYNCDETECT
DATACLK
RESET
TCK
TMS
TDI
TDO
DO
DI
DO
DI
DI
DI
DI
DB
serial data
active high
clock
active low
SPI clock
control data
serial data
serial data
Don’ t use
BPKTCTL
BRCLK
BnPWR
BDCLK
BnDEN
Don’ t use
BDDATA
Write (DI), Read (DO)
BTXD (DI)
BRXD
BPKTCTL
BRCLK
BnPWR
BDCLK
BnDEN
BMISO
BMOSI (DO)
Bidirectional interface
Unidirectional interface
HIGH
BTXEN
BRXEN
BPAEN
2. The default supporting reference clock is 13MHz. To use 16MHz as reference clock, it is necessary to program the RF register
through serial interface at the initial stage. The register description should be referred for the change.
3. These pins should be open in normal operation.
Functional Description
Bluetooth is an open specification for short-range data com-
munications. It operates in the globally available 2.4 GHz to
2.5 GHz ISM free band and uses fast frequency hopping (1600
hop/s) over 79 available channels (2.402 to 2.480 GHz) with a
maximum data rate of 1 Mbit/s.
The PT8R1002 is intended for the use in 2.4GHz ISM fre-
quency band wireless systems, especially, Bluetooth. The trans-
ceiver consists of a fully integrated 2.4 GHz radio transceiver,
frequency-hopping synthesizer, and analog-to-digital and digi-
tal-to-analog converters for the baseband interface. As illus-
trated in Figure 1, the radio module requires only an external
antenna, antenna switch and crystal to complete the analog
front end.
RF receiver
The receiver front-end converts the incoming RF signal in
2.4GHz ISM frequency band to a digitized signal for digital
signal processing. The receiver is composed of a LNA, a com-
plex RF-to-Baseband down conversion Mixer, an AGC/com-
plex filter, a dual ADC for the I/Q signal paths, and phase
locked loop synthesized local oscillator. The first stage is a
single-ended LNA with external matching circuit. The LNA is
followed by quadrature down conversion mixers. The down
conversion mixer employs PTI’ s proprietary technologies to
minimize RF coupling and DC offsets.
Channel selection filter and AGC
With the use of direct down-conversion scheme, the complex
baseband filters carry out excellent channel selection and im-
age-free operations. As a result, the receiver exceeds the
Bluetooth 1.1 requirements for adjacent channel & image re-
jection and provides superior performances in the presence of
ISM-band RF interferers.
PT0124(12/04)
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Ver:2
Preliminary Data Sheet
PT8R1002 CMOS Zero-IF
Radio Transceiver IC for Bluetooth
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The AGC and filter are optimally designed to meet both the
stringent requirements of gain setting and Adjacent Channel
Selectivity (ACS) in Bluetooth. In ISM frequency band appli-
cations, excellent adjacent channel selectivity is required,
because there can be too many blockers operating simulta-
neously. Thus, both channel filter and AGC circuits must have
high linearity and low noise performance. The first channel
filter and first AGC used have IIP3 greater than 30dBm. The
remaining channel filters and AGC’ s are optimized to obtain
high ACS.
PT8R1002 supports the BlueRF™ RXMODE2 Bluetooth inter-
face with both unidirectional and JTAG serial interface or bidi-
rectional and DBUS serial interface which are all compatible
with the PTI PT8R1202 Bluetooth Baseband controller. In this
mode, external Bluetooth baseband delivers the SYNCWORD
detection indication to PT8R1002 when it detects a Bluetooth
SYNCWORD in received data.
I/O Description
RF interface
RF transmitter
The transmitter is composed of a dual DAC for the I/Q signal
paths, channel filter, Baseband-to-RF up- conversion Mixer,
and power amplifier with 2 dBm output power. The phase locked
loop frequency synthesizer is shared with RF receiver to mini-
mize the hardware components. The transmitter features a di-
rect up-conversion scheme to minimize the frequency drift
during a transmit timeslot and also results in a well-controlled
modulation index. The baseband channel filter offers excel-
lent out-of-band suppression and equalized signals to mini-
mize the interference with the on-chip receiver. With the nomi-
nal transmit power of 0 dBm, the transmitter can be used in
class 2 and class 3 radios, and can be simply implemented in
class 1 with an external RF power amplifier.
The radio interface establishes the connection of antenna-to-
LNA in receiving mode and antenna-to-power amplifier in
transmitting mode. The actual configuration of RF front-end
can be seen Figure 1. An antenna filter is located between the
antenna and SPDT (Single Pole Double Throw) switch. The
antenna filter blocks unwanted signals in receive mode and
suppresses harmonics in the transmit mode. The filter can be
either a discrete component or fully integrated in ceramic sub-
strate. The SPDT switch isolates the transmit path and the re-
ceive path and thus impedance can be matched for entire sig-
nal path. A matching circuit is placed between LNA_IN pin
and SPDT switch to match the 50 ohm source to the complex
input impedance of the LNA. Another external matching cir-
cuit is required at PA_OUT to transfer maximum power to the
antenna.
BlueRF RXMODE2 baseband interface
PT8R1002 supports the BlueRF™ RXMODE2 Bluetooth ra-
dio interface with unidirectional and JTAG serial program-
ming interfaces or bidirectional and DBUS serial program-
ming interface, which are compatible with the PTI PT12002
Bluetooth baseband controller. In RXMODE2, the
SYNCWORD correlator is located in baseband controller, and
it detects signal feeds into PT8R1002.
Unidirectional interface
The interface connections for unidirectional mode are shown
in Figure 4.
PLL
The radio synthesizer is fully integrated and thus does not
require any external elements. It is designed with PTI’ s propri-
etary frequency synthesizer technologies, which minimize
phase noise and coupling to the RF amplifiers. An on-chip
reference oscillator is provided and requires an external crys-
tal or a reference clock. The external crystal (reference clock)
frequency should be 13MHz or 16MHz with 20 ppm accuracy.
Baseband modem
The baseband GFSK modem is implemented in a compact dedi-
cated logic that provides excellent performance in the pres-
ence of noise, interferers, and frequency offset/drift, while con-
suming very small power. The baseband modem interface is
designed to transfer Bluetooth data between PT8R1002 and a
baseband controller. The GFSK demodulator performs fre-
quency demodulation. The inherent frequency offset compen-
sation block can guarantee stable operation in the present of
large frequency deviation, which is activated with
SYNCDETECT asserted. The GFSK modulator provides a pre-
cise modulation index control and a Gaussian spectral shap-
ing.
PT0124(12/04)
5
Ver:2
微控制器 MCU
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