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Arm® Arm926EJ-S™ Processor-Based MPU, 800 MHz, MIPI DSI or CSI-2, LVDS, RGB, 2D Graphics, Gigabit Ethernet with TSN, CAN-FD, Octal/Quad SPI, Crypto, PUF

SAM9X70 SAM9X72 SAM9X75

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40 2D Graphics Engine (GFX2D)
40.4 Functional Description
40.4.1 Ring Buffer Management
40.4.1.1 Ring Buffer Model Diagram

Introduction
Features
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 Peripherals
8 Arm926EJ-S Processor
9 Debug and Test
10 Bus Matrix (MATRIX)
11 DMA Controller (XDMAC)
12 Boot Strategies
13 SYSTEM CONTROLLER SUBSYSTEM
14 System Controller Write Protection (SYSCWP)
15 Advanced Interrupt Controller (AIC)
16 Boot Sequence Controller (BSC)
17 General Purpose Backup Registers (GPBR)
18 Watchdog Timer (WDT)
19 Reset Controller (RSTC)
20 Real-Time Timer (RTT)
21 Real-time Clock (RTC)
22 Shutdown Controller (SHDWC)
23 Periodic Interval Timer (PIT)
24 64-bit Periodic Interval Timer (PIT64B)
25 Debug Unit (DBGU)
26 Special Function Registers (SFR)
27 Slow Clock Controller (SCKC)
28 Clock Generator
29 Power Management Controller (PMC)
30 Parallel Input/Output Controller (PIO)
31 MEMORIES
32 Static Memory Controller (SMC)
33 Programmable Multibit Error Correction Code Controller (PMECC)
34 Programmable Multibit ECC Error Location Controller (PMERRLOC)
35 DDR-SDRAM Controller (MPDDRC)
36 OTP Memory Controller (OTPC)
37 IMAGE SUBSYSTEM
38 LCD Controller (LCDC)
39 Low Voltage Differential Signaling Controller (LVDSC)
40 2D Graphics Engine (GFX2D)
41 Display Serial Interface (DSI)
42 Camera Serial Interface (CSI)
43 CSI-2 Demultiplexer Controller (CSI2DC)
44 Image Sensor Controller (ISC)
45 AUDIO SUBSYSTEM
46 Audio Class D Amplifier (CLASSD)
47 Inter-IC Sound Multi-Channel Controller (I2SMCC)
48 Synchronous Serial Controller (SSC)
49 CRYPTOGRAPHY SUBSYSTEM
50 Advanced Encryption Standard (AES)
51 Secure Hash Algorithm (SHA)
52 Triple Data Encryption Standard (TDES)
53 True Random Number Generator (TRNG)
54 Physical Unclonable Functions (PUF)
55 CONNECTIVITY SUBSYSTEM
56 Ethernet MAC (GMAC)
57 Flexible Serial Communication Controller (FLEXCOM)
58 Quad Serial Peripheral Interface (QSPI)
59 Secure Digital MultiMedia Card Controller (SDMMC)
60 Controller Area Network (MCAN)
61 Timer Counter (TC)
62 Pulse Width Modulation Controller (PWM)
63 USB SUBSYSTEM
64 USB Device High Speed Port (UDPHS)
65 USB Host High Speed Port (UHPHS)
66 Analog-to-Digital Controller (ADC)
67 Electrical Characteristics
68 Mechanical Characteristics
69 Marking
70 Ordering Information
71 Revision History
Microchip Information

40.4.1.1 Ring Buffer Model Diagram

Figure 40-2. Ring Buffer Model

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.

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