Nuvoton MPU Gang Writer G1 User manual

MPU Gang Writer G1
Sep. 6, 2023 Page 1of 31 Rev 1.00
MPU Gang Writer G1 USER MANUAL
MPU Gang Writer G1 User Manual
Support Platforms N32926, N9H26, N3290x, N9H20 series
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
Nuvoton is providing this document only for reference purposes of NuMicro microcontroller and
microprocessor based system design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com

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Table of Contents
1OVERVIEW......................................................................................................5
2FEATURES......................................................................................................6
3HARDWARE CONFIGURATION.....................................................................7
3.1 Front View....................................................................................................................... 7
4MPU GANG WRITER G1 FIRMWARE ............................................................9
4.1 Checklist before Operation .......................................................................................... 9
4.1.1 Development Stage..........................................................................................................9
4.1.2 Mass Production Stage .................................................................................................10
4.2 Firmware Operation .................................................................................................... 10
4.2.1 Modify MPU Gang Writer G1 Configuration File ........................................................10
4.2.2 Prepare MicroSD Card ..................................................................................................13
5QUICK START...............................................................................................19
5.1 Operation Process....................................................................................................... 19
6MPU GANG WRITER G1 SCHEMATICS ......................................................20
6.1 Block Diagram Schematic.......................................................................................... 20
6.2 Power ............................................................................................................................ 21
6.3 Writer Group 1.............................................................................................................. 22
6.4 Writer Group 2.............................................................................................................. 23
6.5 Writer Group 3.............................................................................................................. 24
6.6 Writer Group 4.............................................................................................................. 25
6.7 Writer Group 5.............................................................................................................. 26
6.8 Writer Group 6.............................................................................................................. 27
6.9 Writer Group 7.............................................................................................................. 28
6.10 Writer Group 8............................................................................................................ 29
7REVISION HISTORY .....................................................................................30

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List of Figures
Figure 1-1 MPU Gang Writer G1 Board........................................................................................... 5
Figure 3-1 Front View of MPU Gang Writer G1 ............................................................................... 7
Figure 4-1 MPU Gang WRITER G1 Firmware................................................................................. 9
Figure 4-2 The Tag of TurboWriter INI........................................................................................... 12
Figure 4-3 MPU Gang Writer G1 Group 1 ..................................................................................... 14
Figure 4-4 TurboWriter tool operation (1) ...................................................................................... 14
Figure 4-5 TurboWriter Tool Operation (2) .................................................................................... 15
Figure 4-6 TurboWriter Tool Operation (3) .................................................................................... 15
Figure 4-7 TurboWriter Tool Operation (4) .................................................................................... 16
Figure 4-8 TurboWriter Tool Operation (5) .................................................................................... 16
Figure 4-9 TurboWriter Tool Operation (6) .................................................................................... 17
Figure 4-10 The File Copied to SD Card ....................................................................................... 18
Figure 6-1 MPU Gang Writer G1 Block Diagram........................................................................... 20
Figure 6-2 Power............................................................................................................................ 21
Figure 6-3 Writer Group 1 .............................................................................................................. 22
Figure 6-4 Writer Group 2 .............................................................................................................. 23
Figure 6-5 Writer Group 3 .............................................................................................................. 24
Figure 6-6 Writer Group 4 .............................................................................................................. 25
Figure 6-7 Writer Group 5.............................................................................................................. 26
Figure 6-8 Writer Group 6 .............................................................................................................. 27
Figure 6-9 Writer Group 7 .............................................................................................................. 28
Figure 6-10 Writer Group 8 ............................................................................................................ 29

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List of Tables
Table 5-1 LED Behavior................................................................................................................. 19

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1 OVERVIEW
MPU GANG Writer G1 programmer is a NAND Flash writer that can do offline programming up to 8
NAND Flash at a time. There are eight micro SD cards included in this programmer, which store user's
target images waiting to be programed into NAND Flash. MPU GANG Writer G1 programmer supports
the following platforms, include N32926, N9H26, N3290x, N9H20 series.
Figure 1-1 MPU Gang Writer G1 Board

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2 FEATURES
8 pcs of N32926U6DN: LQFP128 pin MCP package with DDR2 (64 MB), which can run up
to 240 MHz operating speed
8 pcs of SD: User SD card for system booting, data storage
UART: Connected to TX/RX for system development, debug message output
8 pcs of USB port-0 that can be used as Device
3.3V I/O power, 1.8V Memory power and 1.2V core power
NAND Flash Writer for N32926, N9H26, N3290x, N9H20 series boot up image

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3 HARDWARE CONFIGURATION
3.1 Front View
USB Device SD card SD card SD card SD card
SD card SD card SD card SD card
System
Reset
Slide
Switch
5V Power
Jack
NAND&SPI
Flash socket
Jumper
Indication
LEDs Indication
LEDs Indication
LEDs Indication
LEDs
Indication
LEDs
Indication
LEDs
Indication
LEDs
Indication
LEDs
UART
Figure 3-1 Front View of MPU Gang Writer G1
Figure 3-1 shows the main components and connectors from the front side of MPU Gang Writer G1.
5V Power Jack (CON1): This power jack needs to connect an extra adapter to supply DC
5V/2A power input for this MPU Gang Writer G1.
Slide Switch (SW1): To switch the input 5V voltage to supply power to this MPU Gang Writer
G1
System Reset (SW3): System will be reset if the SW3 button is pressed.
User indication LEDs:
Color
GPIO pin of N32926
Yellow
PB0
Green
PB1
Red
PB2
Jumper (JP1): Configuration N32926 group 1~8 boot mode.
Jumper
Boot mode
Short
Recovery mode
Open
Normal mode
UART (J3): N32926 debug message output.

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J3
Pin name
1
UR_RX
2
UR_TX
3
GND
SD card (CON2, CON4, CON6, CON8, CON10, CON12, CON14, CON16): Use
MicroSD/eMMC memory card for system booting, data storage.
NAND & SPI Flash socket (J1, J2, J4, J5, J7, J8, J10, J11, J13, K14, J16, J17, J19, J20,
J22, J23): A physical connector that allows NAND Flash or SPI Flash to be easily inserted,
removed, and replaced on the MPU Gang Writer G1.
USB Device (CON3, JP1): Micro USB Device connector to connect to PC.
SOC CPU:N32926U6DN (U1, U5, U9, U13, U17, U21, U25, U29)

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4 MPU GANG WRITER G1 FIRMWARE
The MPU Gang Writer G1 is a firmware executed on the MPU Gang Writer G1 board to program the
NAND Flash according to the image on MicroSD card. This document will guide you how to prepare the
MicroSD card, modify the configuration file, and execute it to program NAND Flash.
Mass Production StageDevelop Stage
Image on NANDMPU Gang Writer G1TurboWriter
TurboWriter.ini
Customer’s Image
NandLoader.bin
Logo.bin
NVTLoader.bin
/NAND1-1/
/NAND1-2/
MPUGangWriterG1
.ini
MPUGangWriterG1
.bin
N32926 SDLoader
SDLoader.bin
Image on SD Card
SDLoader.bin
MPUGangWriterG1
.bin
MPUGangWriterG1
.ini
NandLoader.bin
Logo.bin
NVTLoader.bin
/NAND1-1/
/NAND1-2/
NandLoader.bin
Logo.bin
NVTLoader.bin
/NAND1-1/
/NAND1-2/
N32926
TurboWriter
File provided by Nuvoton File provided by Customer
TurboWriter.ini
TurboWriter.ini
Figure 4-1 MPU Gang WRITER G1 Firmware
The N329 series has two boot flows –one is Normal mode; the other is Recovery mode. For N32926,
the boot flows are below:
The Normal mode boot flow is SD card 0 boot NAND 0 boot NAND 1 boot SPI boot
SD card 1 boot SD card 2 boot USB boot
The Recovery mode boot flow is USB boot only.
The MPU Gang Writer G1 utilizes the character of Normal mode to load code of MPUGangWriterG1.bin
from SD card 0. When MPUGangWriterG1.bin program executes, it will read the configuration file,
MPUGangWriterG1.ini, from SD card 0 and then program the NAND Flash according to the setting in
MPUGangWriterG1.ini.
The MPU Gang Writer G1 can program the NAND Flash for all N329 series such as N3290x, and
N3292x. Different series will use different TurboWriter.ini setting. The TurboWriter.ini setting can be
defined by the keyword “[TurboWriter INI]” in the configuration file MPUGangWriterG1.ini.
Download location:
https://github.com/OpenNuvoton/N32926_NonOS_BSP/tree/master/MPU_Gang_Writer_G1/
4.1 Checklist before Operation
4.1.1 Development Stage
When product development is completed, the customer should already have the following files. Please
prepare them before using the MPU Gang Writer G1.
Items
Source
Description
TurboWrite.ini
Nuvoton
The configuration file of TurboWriter for target CPU.

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NandLoader.bin
Nuvoton / Customer
The NAND Loader firmware for target CPU.
The original firmware is provided by Nuvoton.
However, it could be modified by the customer.
Logo.bin
Customer
(Optional) The Logo image displayed on the panel
when booting.
NVTLoader.bin
Nuvoton / Customer
The NVT Loader firmware for target CPU.
The original firmware is provided by Nuvoton.
However, it could be modified by the customer.
/NAND1-1/
Customer
The firmware or any data files for product.
/NAND1-2/
Customer
Any data files for product.
4.1.2 Mass Production Stage
Please prepare following files or tools before using the MPU Gang Writer G1 for mass production.
Items
Source
Description
SDLoader.bin
Nuvoton
The N32926 SD Loader firmware.
MPUGangWriterG1.bin
Nuvoton
The MPU Gang Writer G1 firmware.
MPUGangWriterG1.ini
Nuvoton /
Custome
r
The configuration file of MPU Gang Writer G1.
The original firmware is provided by Nuvoton.
However, it could be modified by the customer.
N32926 TurboWriter
Nuvoton
The N32926 TurboWriter tool.
Download location:
N32905_NonOS_Tool/TurboWriter/TurboWrite
r V2.30.003_N329x6 at master ·
OpenNuvoton/N32905_NonOS_Tool ·GitHub
Please note that this TurboWriter may be
different from the TurboWriter used during
development stage. For development stage, it
is TurboWriter for target CPU. For mass
production stage, it is TurboWriter for N32926.
MPU Gang Writer G1 board
Custome
r
The hardware for MPU Gang Writer G1 board.
MicroSD card
Custome
r
The MicroSD card as a mass production tool.
MicroSD card reader
Custome
r
The MicroSD card reader is used to copy files
from PC to MicroSD card.
NAND Flash IC
Custome
r
The NAND Flash chip as a part of product.
4.2 Firmware Operation
4.2.1 Modify MPU Gang Writer G1 Configuration File
The MPU Gang Writer G1 configuration file, MPUGangWriterG1.ini, should be modified by the customer
to match the requirements of product. When the MPUGangWriterG1.ini modification is completed,

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please copy it to the root folder of the MicroSD card. The MPU Gang Writer G1 will read it from the
MicroSD card root folder.
The MPUGangWriterG1.ini file provides some sections as follows:
[TurboWriter INI]
// Please copy the tag from TurboWriter.ini for target CPU
N3292 USER_DEFINE
[NAND1-1 FAT FILE]
// -1 to skip NAND1-1 copy, 0 to use DiskImage without MBR,
// 1 to Use FAT file, 2 to use DiskImage with MBR
1
[NandLoader File Name]
// All file name length MUST <= 511 bytes
// Unavailable if [NAND1-1 FAT FILE] is -1
NANDLoader.bin
[Logo File Name]
// Unavailable if [NAND1-1 FAT FILE] is -1
Logo.bin
[NVTLoader File Name]
// Unavailable if [NAND1-1 FAT FILE] is -1
NVTLoader_NAND.bin
[System Reserved MegaB]
// Unit : Mega Byte
2
[NAND1-1 DISK SIZE]
// Unit : Mega Byte (default : 16MB)
// This specify Nand1-1 partition size, total capacity - Nand1-1 = Nand1-2 parition size
// Unavailable if [NAND1-1 FAT FILE] is 2
32
[NAND1-2 FAT FILE]
// Unavailable if [NAND1-1 FAT FILE] is 2
// -1 to skip NAND1-2 copy, 0 to use DiskImage without MBR, 1 to Use FAT file
1

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[NANDCARD FAT FILE]
// -1 to skip NANDCARD copy, 0 to use DiskImage without MBR,
// 1 to Use FAT file, 2 to use DiskImage with MBR
-1
[TIMEOUT SECOND]
// -1 to disable TIMEOUT feature. Other positive integer for TIMEOUT seconds.
-1
Due to its limited parsing ability of MPUGangWriterG1.bin, there are some constraints in
MPUGangWriterG1.ini as listed below:
No space is allowed to precede the option for each line.
Only “//”comment is allowed at the beginning of each line
String in “[ ]”is not allowed to changed.
Only “[Logo File Name]”, “[NVTLoader File Name] and “[System Reserved MegaB]”
section is option for its setting. The others are must.
[TurboWriter INI]
Please copy the tag from TurboWriter.ini for target CPU to here. For example, if the target CPU is
N32905, the tag should be “N3290 USER DEFINE”.
Figure 4-2 The Tag of TurboWriter INI
[NandLoader File Name] / [NVTLoader File Name]
It allows changing the firmware file name for burning. Below sample changes the file name from
NandLoader.bin to Nuvoton.bin for “[NandLoader File Name]”section. Please note that the file name
length MUST less than or equal to 31 bytes.
[NandLoader File Name]
Nuvoton.bin
[Logo File Name]
If the logo file is not necessary for the NandWriter, below two methods are all to skip burning Logo.dat
into the NAND Flash.
[Logo File Name]

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//Logo.dat
or
[Logo File Name]
[System Reserved MegaB]
If the “[System Reserved MegaB]”section is not provided, the default reserved size is 8Mega Bytes for
it.
[NAND1-1 FAT FILE] / [NAND1-2 FAT FILE] / [NANDCARD FAT FILE]
Regarding the copy for Nand1-1, Nand1-2, Nand2, and Nandcard, it provides 4 options:
Option “-1”: Skip to check the Nand1-x folder.
Option “0”: NandWriter copy file content.bin on Nand1-x folder in SD card through GNAND
to Nand1-x partition. It gets the best performance but it need to prepare the disk image by
NRomMaker tool or Linux
Option “1”: NandWriter copy those files on Nand1-x folder in SD card through FAT to Nand1-
x partition.
Option “2”: Like option “0” but the disk image must include partition table (MBR, Master Boot
Record).
Please note that the value [NAND1-1 FAT FILE] could influence the action of other options.
If NAND1-1 is -1 (skip), NandWriter do nothing at first NAND on CS0 interface. It includes all
files in System Reserved Area and NAND1-2.
If NAND1-1 is 2 (disk image with MBR), the options [NAND1-1 DISK SIZE] and [NAND1-2
FAT FILE] are unavailable since they are decided by MBR within disk image, not by
NandWriter.
[TIMEOUT SECOND]
The MPU Gang Writer G1 can also turn on the FAIL LED if the NAND programming cannot be completed
within the timeout interval. The timeout interval can be defined by the keyword “[TIMEOUT SECOND]”
in the configuration file MPUGangWriterG1.ini.
Set the timeout time for MPU Gang Writer G1 in seconds. The MPU Gang Writer G1 will turn on the
FAIL LED if the NAND programming cannot be completed within this timeout time. -1 to disable timeout
feature.
4.2.2 Prepare MicroSD Card
The first step to execute MPU Gang Writer G1 is to prepare a MicroSD card with MPU Gang Writer G1
firmware, configuration file, and the content of NAND Flash. The MicroSD card must reserve some
space to store the SDLoader.bin and MPUGangWriterG1.bin before usage. The procedure is
described below:
1. Short jumper “Rec.” on the MPU Gang Writer G1 board group 1 to become Recovery mode.
2. Connect USB cable between the MPU Gang Writer G1 board group 1 and PC.

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Figure 4-3 MPU Gang Writer G1 Group 1
3. Launch N32926 TurboWriter on PC.
4. Power on MPU Gang Writer G1 board and then click “Re-Connect” button on TurboWriter.
Figure 4-4 TurboWriter tool operation (1)

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5. After connected, insert MicroSD card to NandWriter board and select “SD Card” on
TurboWriter.
Figure 4-5 TurboWriter Tool Operation (2)
6. Set the “System Reserved Area Size” and “Enable SD Format” on “Option” page.
7. Please note to check the “Enable SD Format” option to format MicroSD card. If you format
MicroSD card under Windows system, it does not reserve System Reserved Area Size on MicroSD
card and cannot boot MicroSD card in N32926 system.
Figure 4-6 TurboWriter Tool Operation (3)

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8. Program the SDLoader.bin as system image on “Add New” page
Figure 4-7 TurboWriter Tool Operation (4)
9. Program the MPUGangWriterG1.bin as execute image with “Image execute address” 0
Figure 4-8 TurboWriter Tool Operation (5)
10.MicroSD card system reserved area is ready.
Please note that the two bin files are programmed in system reserved area of MicroSD card

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and unreadable from normal MicroSD card reader.
Figure 4-9 TurboWriter Tool Operation (6)
11.After program system reserved area of MicroSD card by TurboWriter, please put this MicroSD
card to MicroSD card reader on PC and copy MPUGangWriterG1.ini and content files that are
programmed to NAND Flash from PC to this MicroSD card. Typically, the content file on the
MicroSD card should be as follows.
/NAND1-1/ folder that includes customer’s application bin file
/NAND1-2/ folder that includes customer’s data file
MPUGangWriterG1.ini
TurboWriter.ini
NandLoader.bin
Logo.bin (optional)
NVTLoader.bin
Please note that the disk volume label of MicroSD card cannot be the same as any folder name in
MicroSD card. Fox example, “NAND1-1” or “NAND1-2”.

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Figure 4-10 The File Copied to SD Card

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5 QUICK START
The firmware runs on the MPU Gang Writer G1 board (referring to Chapter 4) and is used for
programming NAND Flash memory based on the image stored on an SD card.
5.1 Operation Process
1. Insert SD card and NAND Flash chips to the Sockets.
2. Connect the 5V/2A power supply to the CON1 and slide SW1 to the ON position.
3. The LED behavior is defined in the table below. After the system is powered on, the yellow LED
will blink. The green LED will illuminate when programming NAND Flash memory is Passed. The
red LED will illuminate when programming NAND Flash memory is Failed.
Interface GPIO
Pins
Description
LED Yellow
PB0
Flash: Programming NAND Flash memory
OFF: Program completed
LED Green
PB1
OFF: Programming NAND Flash memory
ON: Program PASS
LED Red
PB2
OFF: Programming NAND Flash memory
ON: Program FAIL
Table 5-1 LED Behavior
4. Once the programming is complete, replace the new NAND Flash chips. Press the System
Reset button (SW3). Repeat Step 4 for all NAND Flash chips.

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6 MPU GANG WRITER G1 SCHEMATICS
6.1 Block Diagram Schematic
Figure 6-1 shows the Block Diagram of the MPU Gang Writer G1 board.
Figure 6-1 MPU Gang Writer G1 Block Diagram