Multimedia & Communications
ATMEL Bluetooth
•Background information on Bluetooth technology
•ATMEL implementation of Bluetooth spec
Multimedia & Communications
WHAT IS BLUETOOTH?
WHAT IS BLUETOOTH?
“Bluetooth”, promoted initially by Ericsson, IBM, Intel, Nokia and
Toshiba, is the code name for an open specification for short-range
wireless connectivity. The technology allows users to make
effortless, instant connections between a wide range of
communication devices. Atmel is a Special Interest Group (SIG)
member of Bluetooth.
2.4 GHz
Bluetooth
radio
Bluetooth
baseband
controller
host
Bluetooth Device
Multimedia & Communications
Proposed Applications
•Telephones (cellular, cordless, other)
•Headsets
•Computers (Laptops, desktop, other)
•Computer peripherals (keyboard, mouse, other)
•LAN peripherals
•PDA’s
•Digital cameras
•and … the only limitation is your imagination
Multimedia & Communications
WHAT IS
WHAT IS ATMEl
ATMEl DEVELOPING?
DEVELOPING?
•Atmel’s development is done through close cooperation of between its Wireless
& Microcontroller (responsible for the RF chip) and its Multimedia &
Communications Product Groups (responsible for the Baseband chip) Together
they do the module integration
•A highly integrated module housed in a BGA package containing all ICs needed
to perform the Bluetooth function
•All firmware needed up to the HCI (host controller interface), with the ability
to develop higher level protocol software upon customer request
•A board reference design that contains the module, all required passives and the
antenna to obtain Bluetooth compliance certification and FCC/EU approvals
Multimedia & Communications
ATMEL’S
ATMEL’S
AT76C551,2,3
AT76C551,2,3
MODULE
MODULE
ARM
7TDMI
Bluetooth
baseband
USB
UART
PCMCIA
External
Memory
Interface
FLASH
Rx VOICE
CODEC
Internal
RAM
PLUTON
CONTROLLER
RF chip control signals
3-wire bus
RF
section
RF
section
Tx
Multimedia & Communications
RF BLOCK DIAGRAM
Single chip
Few external
components
Supply voltage:
2.7 - 3.3 V
Package:
TQFP 48 pins
RF
Transceiver
T2901
T2901
IF
Tank
IF
Filter
(SAW)
Demod.
Tank
Switch
Antenna
Filter
Control & Data
2.45 GHz
Highly Integrated RF Transceiver !
Multimedia & Communications
BLUETOOTH CONTROLLER
BLUETOOTH CONTROLLER
•Single chip controller
–ARM 7TDMI
–64K internal SRAM
–Bluetooth Baseband low-level processing
–Voice CODEC utilizing log PCM or CVSD (Continuous
Variable Slope Delta) Coding
•Offers following interfaces (available in prototype
version):
–PCMCIA (PC Card Standard-Feb.1995) AT76C551
–USB interface (USB standard version 1.1) AT76C552
–UART AT76C553
Multimedia & Communications
P
C
_
R
E
S
E
T
VCC
EXT_13_MHz
EXT_13_MHz_OUT
C
L
K
_
M
O
D
E
1
C
L
K
_
M
O
D
E
0
EXT_OSC
GND
TC_PUPLL
TXPIN
TC_TXON
VCC
TC_CLK
TC_DATA
TC_ENABL
TC_PUVCO
TC_I_CP_SW
TC_RXON
TC_PUREG
TC_PURXTX
TC_LD
GND
VCC
RXMODE
RXF_D7
CLK_RXPIN
RXF_PD
RXF_CLK
RXF_OE_
RXPIN
RXF_D1
RXF_D2
GND
RXF_D3
RXF_D4
RXF_D6
RXF_D5
AVCC
RSSI
AGND
RXF_D0
O
S
C
_
M
O
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GND
M
D
0
M
D
1
M
D
2
M
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3
M
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4
M
D
5
M
A
1
6
M
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1
7
M
A
1
8
V
C
C
G
N
D
V
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C
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H
3
M
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4
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5
M
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6
M
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6
M
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7
M
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0
M
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1
M
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2
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AVCC
VC_OUT
AGND
VC_IN
V
C
C
A
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N
C
A
B
C
L
K
A
C
L
K
G
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D
P
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7
P
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_
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6
P
C
_
D
5
P
C
_
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4
P
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_
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3
P
C
_
D
2
PC_A3
PC_A2
PC_A1
P
C
_
A
0
G
N
D
N
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1
N
I
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G
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P
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1
P
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0
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W
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C
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T
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K
T
D
I
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M
S
T
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ON
I
N
P
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K
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D
D
B
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A
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1
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A
L
2
V
C
C
T
E
S
T
_
C
T
R
L
MA10
MA9
MA8
MA7
GND
VCC
M
A
1
5
M
A
1
4
M
A
1
3
MA12
MA11
MA1
MA0
U_CD_
USART_TX
USART_RX
U_DTR_
MA6
MA5
MA4
MA3
MA2
VCC
DP
DM
GND
P_OR_UN
PC_A14
U_DSR_
GND
U_RTS_
U_CTS_
U_RI_
PC_A8
VCC
PC_A7
PC_A6
PC_A5
PC_A4
PC_A13
PC_A12
PC_A11
PC_A10
PC_A9
1
3
4
5
9
8
7
6
16
15
14
13
12
11
10
18
19
21
20
17
22
23
24
25
26
32
31
30
29
28
27
39
38
37
36
35
33
34
44
43
42
41
40
2
4
54
74
84
95
3
5
2
5
1
5
06
0
5
9
5
8
5
7
5
6
5
5
5
46
2
6
36
5
6
4
6
16
66
76
86
97
07
6
7
5
7
4
7
3
7
2
7
18
3
8
2
8
1
8
0
7
9
7
77
88
8
8
7
8
6
8
5
8
4
4
6
132
130
129
128
124
125
126
127
117
118
119
120
121
122
123
115
114
112
113
116
111
110
109
108
107
101
102
103
104
105
106
94
95
96
97
98
100
99
89
90
91
92
93
131
1
7
61
7
41
7
31
7
21
6
8
1
6
9
1
7
0
1
7
11
6
1
1
6
2
1
6
3
1
6
4
1
6
5
1
6
6
1
6
71
5
9
1
5
81
5
6
1
5
7
1
6
01
5
51
5
41
5
31
5
21
5
11
4
5
1
4
6
1
4
7
1
4
8
1
4
9
1
5
01
3
8
1
3
9
1
4
0
1
4
1
1
4
2
1
4
41
4
31
3
3
1
3
4
1
3
5
1
3
6
1
3
7
1
7
5
C
S
F
L
1
6
VDDAC
Bluetooth Controller
AT76C551
176 PINS IN PROTOTYPE VERSION
176 PINS IN PROTOTYPE VERSION
Multimedia & Communications
ARM PROCESSOR
•Configures and controls Bluetooth Baseband and
interface modules of controller
•Allows implementation of high level protocols for
Bluetooth and other supported interfaces
•Allows implementation of bridging functions between
Bluetooth air interface and USB, UART, PCMCIA
Atmel offers a complete reference design including
software/firmware up through HCI
Multimedia & Communications
ARCHITECTURE (BASEBAND)
•Bluetooth packet type processing
•Bluetooth slot delimitation
•Two Frequency Hopping systems support
•Radio interface implemented
•Enryption Engine
•Authentication empowered by hardware
Multimedia & Communications
ARCHITECTURE (INTERFACE)
•Dedicated USB hardware
–Six endpoints supported, each with double buffered
FIFOs
•Dedicated full programmable UART hardware
•Supports multiple reference clock frequencies 13.0, 14.4,
16.8, 19.44 MHz
•All interfaces have 32-64 byte FIFOs for improved data
buffering
•USB/PCMCIA have direct access to internal (external)
SRAM for improved throughput
Atmel offers a complete reference design including
software/firmware up through HCI
Multimedia & Communications
ARCHITECTURE (VOICE CODEC)
ARCHITECTURE (VOICE CODEC)
•Dedicated Voice CODEC hardware consisting of:
–Digital Voice Codec interface, supporting short frame
sync, long frame sync in master/slave mode
–Voice CODEC which converts analog I/O to linear PCM
and vice versa
–Digital voice data coded by the CVSD (Continuous
Variable Slope Delta) algorithm or as log-PCM
•Configuration of CODEC hardware by ARM processor
Atmel offers a complete reference design including
software/firmware up through HCI
Multimedia & Communications
ATMEL’S ADVANTAGES AS
BLUETOOTH PARTNER
•Atmel offers a complete solution for Bluetooth including
functional compliance and regulatory certification. This
affords our customers a one-stop-shop
•Atmel has a clear vision and product roadmap for a single
chip solution. This roadmap includes both silicon process
development and design infrastructure
•Atmel’s Bluetooth team combines high engineering expertise
in RF design, digital design, NV Memory design, and
firmware development working closely together with the goal
of providing an optimum total solution for our customers
Multimedia & Communications
•Atmel’s solution accepts multiple clock frequencies
•Atmel owns its Flash process
•Atmel has complete control of the manufacturing of ALL ICs
in our solution, thus allowing our customers to assume low
risk in terms of product schedules, production capacity, and
price competitiveness
ATMEL’S ADVANTAGES AS YOUR
BLUETOOTH PARTNER
cont’d
Multimedia & Communications
Development Kit
•Developers Kit containing two boards with RF, access
to all interfaces, software/firmware drivers up through
HCI and manual.
•Software drivers under Microsoft Windows initially with
Linux ones to follow.
