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Block Diagrams
7-4
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7-3. BT & FM Radio Block diagram
BT Block diagram
PTU
BlueRF
Interface
LCU
Rx/Tx
Buffer
Buffer
APU
Transceiver
Modem
Transmitter Path
LO Generation
Receiver Path
T/R
Digital
Modulator
Calibration
and
Control
Digital
Demodulator
Bit Sync
Crystal
Oscillator
HV
LDO
LPO
POR
USB
SDIO
SPI
UART
Buffer
Debut
UART
PCM/I
2
S
Serial
(SPI)
Flash,
BSC
USB I/O
USB I/O
lo
rt
no
C t
ro
P
PMU
Controller
Interrrupt
Controller
G
A
TJ
n
ac
S
BT Clock
/
Hopper
G
A
TJ
M
R
A
Digital I/O
JTAG
Antenna
Analog USB
Digital I/O
Analog USB
External
Memory Bus
RST_N
AHB2MEM
Bridge
Address
Decoder
Bus
Arbitrator
ROM
(
352 KB)
RAM
(104 KB)
Remap/
Pause
Watchdog
Timer
GPIO
Software
Timer
lo
rt
no
C t
ro
P
Trap
and
Patch
ARM7
Two-Channel S/G,
Single-Channel Standard DMA
AHB2APB
Bridge
AHB2EBI
Main
LDO
XTAL
VBAT
VREGHV
VREG
BCM2070