參數(shù)資料
型號： MC72000
廠商： 飛思卡爾半導體(中國)有限公司
英文描述： Integrated Bluetooth Radio
中文描述： 集成藍牙無線
文件頁數(shù)： 27/156頁
文件大?。?/td> 1782K
代理商： MC72000
System Description
MOTOROLA
MC72000
Advance Information Data Sheet
Go to: www.freescale.com
27
5 System Description
This section describes the MC72000 system in more detail than in Section 2, “System Overview.” It also
includes a section listing other documents of relevance (see Section 5.2, “Document References”).
5.1 MC72000 System Description
The detailed MC72000 design is shown in the block diagram in Figure 5.
Note that the voltages on the figure are the recommended setup of the MC72000, and the input frequencies
are clocks and not crystals as in Figure 1.
Figure 5. MC72000 Block Diagram
The following sections describe the different blocks of the MC72000.
5.1.1 ARM7 Processor
The MC72000 Bluetooth Baseband Controller architecture is based on the 32-bit ARM7TDMI
microprocessor. It is an industry-standard processor recognized for its efficient MIPS/WATT benchmark,
along with excellent code efficiency when working in the 16-bit THUMB mode. The architecture is based
on RISC principles and supports two instruction sets:
32-bit ARM instruction set
16-bit THUMB instruction set
The ARM7 processor handles the high speed processing of data and link control management. The
MC72000 has 64 Kb RAM and 256 Kb ROM embedded containing a full Bluetooth baseband and upper
stacks. The ARM7 processor is primarily executing code from ROM and handles device initialization,
power control, protocol behavior, and packet formatting.
GPIO C9,
B10, B12
MOSI, SS
MISO, SCK
RX, FS
TX, CLK
CLK1
TXD, CTS
RXD, RTS
REFCTRL
GPIO
SPI
SSI
UART
POR
64 kHz
Voice
Processor
Wakeup
Ref Synthesizer
24 MHz Data
RF Frac-N
Synthesizer
Main
VCO
DC
VCO
BB Signal
Processing
& Timing
MC72000
Limiter
Demod
256 kB
ROM
ARM7
64 kB
RAM
LUT
CMPLX
MIX
D/A
LPA
LNA
4 MHz
BB Clk
TX Data
GPO
LO
BP FILTER
6 MHz IF
Rx/Tx
switch
match
Microstrip
balun
External PA
JTAG
VCC_RF
2.5 - 3.1 VDC
VDD_BB
1.65 - 1.95 VDC
VDD_IO
1.8 - 3.3 VDC
RF VCO
filter
12-26 MHz
Ref. Osc
Ref VCO
filter
32.768 kHz Osc
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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