Preliminary User's Manual l TQMLS1028A UM 0001 l © 2019, TQ-Systems GmbH Page i
TABLE OF CONTENTS
1. ABOUT THIS MANUAL ........................................................................................................................................................................1
1.1 Copyright and license expenses .....................................................................................................................................................1
1.2 Registered trademarks.......................................................................................................................................................................1
1.3 Disclaimer...............................................................................................................................................................................................1
1.4 Imprint.....................................................................................................................................................................................................1
1.5 Tips on safety ........................................................................................................................................................................................2
1.6 Symbols and typographic conventions........................................................................................................................................2
1.7 Handling and ESD tips........................................................................................................................................................................2
1.8 Naming of signals ................................................................................................................................................................................3
1.9 Further applicable documents / presumed knowledge..........................................................................................................3
2. BRIEF DESCRIPTION.............................................................................................................................................................................3
3. OVERVIEW ..............................................................................................................................................................................................4
3.1 Block diagram .......................................................................................................................................................................................4
3.2 System components...........................................................................................................................................................................4
4. ELECTRONICS ........................................................................................................................................................................................5
4.1 LS1028A CPU.........................................................................................................................................................................................5
4.1.1 LS1028A variants, block diagrams..................................................................................................................................................5
4.1.2 LS1028A variants, details...................................................................................................................................................................7
4.2 Reset Logic and Supervisor...............................................................................................................................................................7
4.2.1 Supervisor ..............................................................................................................................................................................................7
4.2.2 Self-Reset................................................................................................................................................................................................8
4.2.3 JTAG-Reset TRST# ................................................................................................................................................................................8
4.3 CPU Configuration...............................................................................................................................................................................9
4.3.1 RCW Source ...........................................................................................................................................................................................9
4.3.2 Configuration signals..........................................................................................................................................................................9
4.3.3 Reset Configuration Word.............................................................................................................................................................. 10
4.3.4 Settings via Pre-Boot-Loader PBL ................................................................................................................................................ 10
4.3.5 Error handling during RCW loading............................................................................................................................................ 10
4.4 System Controller ............................................................................................................................................................................. 10
4.5 System Clock ...................................................................................................................................................................................... 11
4.6 Flash...................................................................................................................................................................................................... 11
4.6.1 QSPI NOR Flash.................................................................................................................................................................................. 11
4.6.2 eMMC / SD card................................................................................................................................................................................. 11
4.7 SDRAM.................................................................................................................................................................................................. 11
4.8 EEPROM ............................................................................................................................................................................................... 12
4.8.1 Data EEPROM 24LC256T ................................................................................................................................................................. 12
4.8.2 Configuration EEPROM SE97B ...................................................................................................................................................... 12
4.9 RTC......................................................................................................................................................................................................... 13
4.10 Temperature monitoring................................................................................................................................................................ 13
4.11 Supply................................................................................................................................................................................................... 13
4.12 Power consumption......................................................................................................................................................................... 14
4.12.1 Power consumption CPU ............................................................................................................................................................... 14
4.12.2 Power consumption TQMLS1028A ............................................................................................................................................. 14
4.13 Voltage monitoring.......................................................................................................................................................................... 14
4.14 Interfaces to other systems and devices.................................................................................................................................... 15
4.14.1 UART ..................................................................................................................................................................................................... 15
4.14.2 I2C bus................................................................................................................................................................................................... 15
4.14.3 JTAG ...................................................................................................................................................................................................... 15
4.15 TQMLS1028A interfaces.................................................................................................................................................................. 15
4.15.1 Pin multiplexing................................................................................................................................................................................ 15
4.15.2 Pinout TQMLS1028A........................................................................................................................................................................ 16
