Texas Instruments AM335 Series

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Functional Description

• ECC correction

The default ECC correction applied is BCH 8b/sector using the GPMC and ELM hardware.

For device ID codes D3h, C3h, D5h, C5h, D7h, C7h, DEh, CEh when manufacturer code (first ID byte) is

98h the Cell type information is checked in the 4th byte of ID data. If it is equal to 10b then the ECC

correction applied is BCH 16b/sector.

In addition ECC computation done by the ROM can be turned off completely by using SYSBOOT[9]. This

is particularly useful when interfacing with NAND devices that have built in ECC engines.

Table 26-18. ECC Configuration for NAND Boot

SYSBOOT[9] ECC Computation

0 ECC done by ROM

1 ECC handled by NAND

4123

SPRUH73H–October 2011–Revised April 2013 Initialization

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Table of Contents2
Preface149
1 Introduction150
- 1.1 AM335x Family150
- 1.2 Silicon Revision Functional Differences and Enhancements153
2 Memory Map155
- 2.1 ARM Cortex-A8 Memory Map155
3 ARM MPU Subsystem164
- 3.1 ARM Cortex-A8 MPU Subsystem165
4 Programmable Real-Time Unit and Industrial Communication Subsystem (PRU-ICSS)176
- 4.1 Introduction177
5 Graphics Accelerator (SGX)178
- 5.1 Introduction179
- 5.2 Integration182
- 5.3 Functional Description184
  - 5.3.1 SGX Block Diagram184
  - 5.3.2 SGX Elements Description184
6 Interrupts186
- 6.1 Functional Description187
- 6.2 Basic Programming Model190
- 6.3 ARM Cortex-A8 Interrupts199
- 6.4 PWM Events203
- 6.5 Interrupt Controller Registers204
  - 6.5.1 INTC Registers204
7 Memory Subsystem250
- 7.1 GPMC251
- 7.2 OCMC-RAM398
  - 7.2.1 Introduction398
    - 7.2.1.1 OCMC-RAM Features398
    - 7.2.1.2 Unsupported OCMC-RAM Features398
  - 7.2.2 Integration399
- 7.3 EMIF400
- 7.4 ELM476
8 Power, Reset, and Clock Management (PRCM)499
- 8.1 Power, Reset, and Clock Management500
9 Control Module746
- 9.1 Introduction747
- 9.2 Functional Description747
- 9.3 CONTROL_MODULE Registers757
10 Interconnects863
- 10.1 Introduction864
11 Enhanced Direct Memory Access (EDMA)869
- 11.1 Introduction870
- 11.2 Integration873
  - 11.2.1 Third-Party Channel Controller (TPCC) Integration873
  - 11.2.2 Third-Party Transfer Controller (TPTC) Integration874
- 11.3 Functional Description876
- 11.4 EDMA3 Registers939
  - 11.4.1 EDMA3 Channel Controller Registers939
  - 11.4.2 EDMA3 Transfer Controller Registers993
- 11.5 Appendix A1018
12 Touchscreen Controller1022
- 12.1 Introduction1023
  - 12.1.1 TSC_ADC Features1023
  - 12.1.2 Unsupported TSC_ADC_SS Features1023
- 12.2 Integration1024
- 12.3 Functional Description1026
- 12.4 Operational Modes1029
  - 12.4.1 PenCtrl and PenIRQ1030
- 12.5 Touchscreen Controller Registers1033
  - 12.5.1 TSC_ADC_SS Registers1033
13 LCD Controller1097
- 13.1 Introduction1098
  - 13.1.1 Purpose of the Peripheral1098
  - 13.1.2 Features1099
- 13.2 Integration1100
- 13.3 Functional Description1102
- 13.4 Programming Model1122
- 13.5 LCD Registers1128
14 Ethernet Subsystem1163
- 14.1 Introduction1164
  - 14.1.1 Features1164
  - 14.1.2 Unsupported Features1165
- 14.2 Integration1166
- 14.3 Functional Description1176
- 14.4 Software Operation1235
- 14.5 Ethernet Subsystem Registers1240
15 Pulse-Width Modulation Subsystem (PWMSS)1485
- 15.1 Pulse-Width Modulation Subsystem (PWMSS)1486
- 15.2 Enhanced PWM (ePWM) Module1494
- 15.3 Enhanced Capture (eCAP) Module1607
- 15.4 Enhanced Quadrature Encoder Pulse (eQEP) Module1650
16 Universal Serial Bus (USB)1690
- 16.1 Introduction1691
- 16.2 Integration1694
- 16.3 Functional Description1697
- 16.4 Supported Use Cases1759
- 16.5 USB Registers1760
17 Interprocessor Communication3235
- 17.1 Mailbox3236
- 17.2 Spinlock3306
  - 17.2.1 SPINLOCK Registers3306
18 Multimedia Card (MMC)3344
- 18.1 Introduction3345
  - 18.1.1 MMCHS Features3345
  - 18.1.2 Unsupported MMCHS Features3345
- 18.2 Integration3346
- 18.3 Functional Description3350
- 18.4 Low-Level Programming Models3384
- 18.5 Multimedia Card Registers3389
  - 18.5.1 MULTIMEDIA_CARD Registers3389
19 Universal Asynchronous Receiver/Transmitter (UART)3446
- 19.1 Introduction3447
- 19.2 Integration3449
- 19.3 Functional Description3453
- 19.4 UART/IrDA/CIR Basic Programming Model3496
  - 19.4.1 UART Programming Model3496
    - 19.4.1.1 Quick Start3496
    - 19.4.1.2 Hardware and Software Flow Control Configuration3499
      - 19.4.1.2.1 Hardware Flow Control Configuration3499
      - 19.4.1.2.2 Software Flow Control Configuration3499
  - 19.4.2 IrDA Programming Model3502
- 19.5 UART Registers3505
  - 19.5.1 UART Registers3505
20 Timers3550
- 20.1 DMTimer3551
- 20.2 DMTimer 1ms3585
- 20.3 RTC_SS3621
- 20.4 WATCHDOG3670
21 I2C3698
- 21.1 Introduction3699
  - 21.1.1 I2C Features3699
  - 21.1.2 Unsupported I2C Features3699
- 21.2 Integration3700
- 21.3 Functional Description3702
- 21.4 I2C Registers3716
  - 21.4.1 I2C Registers3716
22 Multichannel Audio Serial Port (McASP)3768
- 22.1 Introduction3769
- 22.2 Integration3771
- 22.3 Functional Description3773
- 22.4 McASP Registers3826
  - 22.4.1 McASP CFG Registers3826
  - 22.4.2 McASP Data Port Registers3880
23 Controller Area Network (CAN)3881
- 23.1 Introduction3882
  - 23.1.1 DCAN Features3882
  - 23.1.2 Unsupported DCAN Features3882
- 23.2 Integration3883
- 23.3 Functional Description3885
- 23.4 DCAN Registers3922
24 Multichannel Serial Port Interface (McSPI)3993
- 24.1 Introduction3994
  - 24.1.1 McSPI Features3994
  - 24.1.2 Unsupported McSPI Features3994
- 24.2 Integration3995
- 24.3 Functional Description3997
- 24.4 McSPI Registers4032
  - 24.4.1 SPI Registers4032
25 General-Purpose Input/Output4056
- 25.1 Introduction4057
- 25.2 Integration4058
- 25.3 Functional Description4061
- 25.4 GPIO Registers4068
  - 25.4.1 GPIO Registers4068
26 Initialization4095
- 26.1 Functional Description4096
27 Debug Subsystem4156
- 27.1 Functional Description4157
  - 27.1.1 Debug Suspend Support for Peripherals4157
    - 27.1.1.1 Debug Subsystem Registers4157
A Revision History4159

Texas Instruments AM335 Series

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