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Ultra-Low-Power Arm® Cortex®-A5 Core-Based MPU, 500 MHz, Graphics Interface, Ethernet 10/100, CAN, USB, PCI 5.0 Pre-Certified SAMA5D2 Series

ATSAMA5D21 ATSAMA5D22 ATSAMA5D23 ATSAMA5D24 ATSAMA5D26 ATSAMA5D27 ATSAMA5D28

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46 Flexible Serial Communication Controller (FLEXCOM)
46.7 USART Functional Description
46.7.10 Test Modes
46.7.10.1 Normal Mode

SAMA5D2 Series

Introduction
Features
Description
1 Configuration Summary
2 Block Diagram
3 Signal Description
4 Microchip Recommended Power Management Solutions
5 Safety and Security Features
6 Package and Pinout
7 Power Considerations
8 Memories
9 Event System
10 System Controller
11 Peripherals
12 Chip Identifier (CHIPID)
13 Cortex-A5 Processor (ARM)
14 L2 Cache Controller (L2CC)
15 Debug and Test Features
16 Standard Boot Strategies
17 CPU System Bus Matrix (CPUMX)
18 Matrix (H64MX/H32MX)
19 Special Function Registers (SFR)
20 Special Function Registers Backup (SFRBU)
21 Advanced Interrupt Controller (AIC)
22 Watchdog Timer (WDT)
23 Reset Controller (RSTC)
24 Shutdown Controller (SHDWC)
25 Periodic Interval Timer (PIT)
26 Real-time Clock (RTC)
27 System Controller Write Protection (SYSCWP)
28 Slow Clock Controller (SCKC)
29 Peripheral Touch Controller (PTC)
30 Low Power Asynchronous Receiver (RXLP)
31 Clock Generator
32 Power Management Controller (PMC)
33 Parallel Input/Output Controller (PIO)
34 External Memories
35 DDR-SDRAM Controller (MPDDRC)
36 Static Memory Controller (SMC)
37 DMA Controller (XDMAC)
38 LCD Controller (LCDC)
39 Ethernet MAC (GMAC)
40 USB Device High Speed Port (UDPHS)
41 USB Host High Speed Port (UHPHS)
42 Audio Class D Amplifier (CLASSD)
43 Inter-IC Sound Controller (I2SC)
44 Synchronous Serial Controller (SSC)
45 Two-wire Interface (TWIHS)
46 Flexible Serial Communication Controller (FLEXCOM)
47 Universal Asynchronous Receiver Transmitter (UART)
48 Serial Peripheral Interface (SPI)
49 Quad Serial Peripheral Interface (QSPI)
50 Secure Digital MultiMedia Card Controller (SDMMC)
51 Image Sensor Controller (ISC)
52 Controller Area Network (MCAN)
53 Timer Counter (TC)
54 Pulse Density Modulation Interface Controller (PDMIC)
55 Pulse Width Modulation Controller (PWM)
56 Secure Fuse Controller (SFC)
57 Integrity Check Monitor (ICM)
58 Advanced Encryption Standard Bridge (AESB)
59 Advanced Encryption Standard (AES)
60 Secure Hash Algorithm (SHA)
61 Triple Data Encryption Standard (TDES)
62 True Random Number Generator (TRNG)
63 Analog Comparator Controller (ACC)
64 Security Module (SECUMOD)
65 Analog-to-Digital Controller (ADC)
66 Electrical Characteristics
67 Mechanical Characteristics
68 Marking
69 Ordering Information
70 Revision History
Microchip Information

46.7.10.1 Normal Mode

Normal mode connects the RXD pin on the receiver input and the transmitter output on the TXD pin.

Figure 46-56. Normal Mode Configuration

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