CC2544_15 Datasheet, PDF (15/29 Pages) Texas Instruments – System-on-Chip for 2.4-GHz USB Applications

CC2544
www.ti.com
SWRS103D – JUNE 2011 – REVISED MAY 2012
BLOCK DIAGRAM
A block diagram of the CC2544 is shown in Figure 7. The modules can be roughly divided into one of three
categories: CPU-related modules; modules related to power, test, and clock distribution; and radio-related
modules. In the following subsections, a short description of each module is given. For more details, see the
CC2543/44/45 User’s Guide (SWRU283).
RESET_N
XOSC_Q2
XOSC_Q1
RESET
32-MHz
CRYSTAL OSC
WATCHDOG
TIMER
CLOCK MUX
and
CALIBRATION
DEBUG
INTERFACE
HIGH-
SPEED
RC-OSC
32-kHz
RC-OSC
ON-CHIP VOLTAGE
REGULATOR
POWER ON RESET
BROWN OUT
VDD (2 V–3.6 V)
DCOUPL
5 V to 3.3 V
VOLTAGE REGULATOR
SLEEP TIMER
POWER MANAGEMENT CONTROLLER
VBUS (4 V –5.45 V)
P1_3
P1_2
P1_1
P1_0
P0_3
P0_2
P0_1
P0_0
8051 CPU
CORE
DMA
IRQ CTRL
PDATA
XRAM
IRAM
SFR
UNIFIED
MEMORY
ARBITRATOR
PSEUDO-RANDOM
NUMBER
GENERATOR
RAM
SRAM
FLASH
FLASH
FIFOCTRL
FLASH CTRL
1 KB SRAM
RADIO REGISTERS
AES
ENCRYPTION
AND
DECRYPTION
Link Layer Engine
DEMODULATOR
MODULATOR
USB_N
USB_P
USB
USART 0
RECEIVE
TIMER 1 (16-Bit)
TIMER 2
(RADIO TIMER)
TIMER 3 (8-Bit)
TIMER 4 (8-Bit)
DIGITAL
ANALOG
MIXED
Figure 7. CC2544 Block Diagram
TRANSMIT
RF_P RF_N
B0301-09
Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): CC2544
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