瑞萨RDK-N9H20评估板用户手册说明书-USB迷|专注于互联网分享

2024年7月13日发(作者：东浩言)

RDK-N9H20

ARM® ARM926EL-S Based

32-bit Microprocessor

RDK-N9H20

Demo Board User Manual

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 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.

Sept. 25, 2018 Page 1 of 26 Rev 1.00

RDK-N9H20

Table of Contents

1.1

1.2

1.3

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

OVERVIEW ......................................................................................... 3

Brief Introduction to RDK-N9H20 Demo Board ................................................... 4

PCB key parts description ............................................................................ 4

System Circuitry design notes ....................................................................... 6

Main Clock ....................................................................................................... 6

RTC Clock ....................................................................................................... 6

Power-on Setting ............................................................................................... 7

Power Desing Notes ........................................................................................... 8

2.1

2.2

2.3

PCB Layout Design Note. ...................................................................... 10

USB ..................................................................................................... 10

Signal integrity, SI .................................................................................... 11

Power supply and power filter design consideration ............................................ 12

DDR MVDD & Core Power 1.8V Design .................................................................. 12

I/O 3.3V 13

2.3.1

2.3.2

2.4

2.5

Main Clock 12MHz Design Suggestion ........................................................... 14

RESET Layout Suggestion ......................................................................... 15

3.1

3.2

3.3

3.4

RDK-N9H20 demo board use description .................................................... 16

System 16

USB Port ............................................................................................... 18

Communication Interface (UART0) uses .......................................................... 18

LCD Interface .......................................................................................... 18

4.1

4.2

4.3

4.4

Test Report ........................................................................................ 19

Power consumption .................................................................................. 19

ESD Test Report ...................................................................................... 19

EFT Test Result ....................................................................................... 19

EMI Test Result ....................................................................................... 20

5.1

5.2

5.3

RDK-N9H20 demo board SCHEMATIC ...................................................... 22

N9H20 Schematic .................................................................................... 22

Power Schematic ..................................................................................... 24

REVISION HISTORY ............................................................................ 25

Sept. 25, 2018 Page 2 of 26 Rev 1.00

RDK-N9H20

1 OVERVIEW

The RDK-N9H20 is a general demo board installed the N9H20K51N chip which integrated 32MB

DDR2 memory, users can verify emWin GUI application program easily.

The demo board includes one Micro USB connector for USB 2.0 high speed device controller for

communication with PC, and the board also has a debugging UART port for system programming

or debugging.

About display, the RDK-N9H20 demo board included one 4.3” LCD which the resolution is

480x272 with RGB-24bits and embedded the 4-wires resistive type touch panel.

For system booting, the RDK-N9H20 demo board supports one SPI-NOR Flash or one NAND

Flash for selection depended on user demand.

Figure 1-1 RDK-N9H20 demo board

Sept. 25, 2018 Page 3 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

1.1 Brief Introduction to RDK-N9H20 Demo Board

RDK-N9H20 demo board applied to HMI application, the purpose is for user have a reference

design with emWin GUI accelerator platform. Thus that customers do not have to modify or only

make simple changes could get a completed HMI hardware product quickly

The following figures show the RDK-N9H20 demo board, in which the PCB integrated Nuvoton

N9H20K51N 32-bit microcontroller with CPU core ARM926EJ-S, speed runs up at 192MHz, with

16KB I-cache, 16 KB D-cache and MMU, 8KB SRAM and 12KB IBR(Internal Boot ROM) for

booting sources from USB ,SPI-NOR Flash or NAND Flash selectable.

1.2 PCB key parts description

The PCB key parts are shown as the figure

Figure 1-2 RDK-N9H20 PCB components side

Sept. 25, 2018 Page 4 of 26 Rev 1.00

RDK-N9H20

○

DDR/Core Power 1.8V

○

CPU RESET

○

I/O_EXT with GPA0/2/3/4

○

RTC battery

○

LCD backlight driver

○

USB Device CON

○

NAND FLASH

○

N9H20K51N

○

LCD FC CON (RGB-24bits with TP）

○

DC5V power supply port

○

SPI-NOR FLASH

○

XTAL_12MHz

○

I/O_EXT with GPB/3/4/5/6

○

IO Power 3.3V

○

Reserved CON for CAP type TP

(Mode）Normal/USB recovery mode

jumper

Sept. 25, 2018 Page 5 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

1.3 System Circuitry design notes

1.3.1 Main Clock

The system clock circuit is formed by the feedback circuit inside the chip and the external 12MHz

crystal oscillation circuit. Recommended crystal connection mode and device parameters as shown in

the figure below.

Note: The chosen capacitance needs to match the load capacitance of the crystal oscillator

1.3.2 RTC Clock

N9H20K51N integrates the RTC function, the board needs to provide the RTC with the clock circuit,

the recommended Crystal connection mode and the device parameters as shown in the figure below.

Sept. 25, 2018 Page 6 of 26 Rev 1.00

RDK-N9H20

1.3.3 RESET

The nRST signal of the N9H20K51N is the reset signal input pin, and the required reset effective

signal is a low-level pulse.

In order to stabilize the system robustness, it is recommended to use the following circuitry to

implement reset signal. The RDK-N9H20 demo board reset circuity and related passive device

parameters as shown in the following figure.

1.3.4 Power-on Setting

The power-on setting value is used to configure the chip to enter a specific state after power-up or

reset. The power-on setting value will be kept in power-on setting control register for reference.

The following is the RDK-N9H20 demo board power-on setting circuitry and functions description.

Sept. 25, 2018 Page 7 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

1.3.4.1 RDK-N9H20 demo board power-on setting description

ND0

ND2

ND5

PGC5

GPC4

NAND PAGE Size

Auto by IBR

ND4

DRAM type

DDR

SDRAM

DDR2

LP-DDR

Part No.

N9H20K31N

N9H20K11N

N9H20K51N

Reserved

Note

UART0 debug message output

UART0 message disable

Note

USB Recovery mode

Normal mode

1.3.5 Power Desing Notes

RDK-N9H20 demo board power supply design have the below considerations



For system core power (1.8V) design, it is recommended to select DC-DC part and the output

capacity have 1A or above is better.

For IO power (3.3V), in RDK-N9H20 demo board also uses DC-DC part, the concern is for LCD

powered

Power up sequence, the I/O (3.3V) power should be equal or fast than the core (1.8V) power

and time gap between should control under within 500uS as the figure shown.

Power-down sequence, the Core (2.8V) power should be equal or fast than the I/O (3.3V) power.

Sept. 25, 2018 Page 8 of 26 Rev 1.00

RDK-N9H20

Note.

 Yellow line is I/O (3.3V)

 Blue line is core (1.8V)

 Purple line is nRST signal

Sept. 25, 2018 Page 9 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

2 PCB LAYOUT DESIGN NOTE.

RDK-N9H20 demo board is a 2-layers PCB and single component side design, for getting good

performance and system quality have some suggestions as the below please follow.

2.1 USB

USB differential Line have 3 conditions as far as possible: 1, equal length; 2, equal width and 3,

Equidistant

To do 90ohm ±10% impedance control. The double-layer plate can be controlled by the way of the

impedance, that is, the differential line to do the GND shielding processing.

The RDK-N9H20 demo board USB eys diagram result as the below fugure

Sept. 25, 2018 Page 10 of 26 Rev 1.00

RDK-N9H20

2.2 Signal integrity, SI

Due to 2- layers PCB does not have a separate GND plane, and to ensure the connectivity and

integrity of the GND plane, the following requirements must be observed:

 The Bottom layer as far as possible or less device, to ensure the bottom surface of the GND

integrity. Especially at the bottom of the main chip.,the RDK-N9H20 demo board that GND

process at the bottom of main chip is shown in the following figure.

 If that is possible please place more via holes to GND to ensure that the top surface and the

bottom surface of the GND copper skin connectivity.

 Ensure that there is no island of GND copper skin, as far as possible to ensure that as much as

possible to connect the copper, so that the signal return path as short as possible.

 High-speed signal line under the bottom surface, as far as possible to ensure the complete GND

plane, do not have to walk through the line.

 For critical signals, such as crystal oscillator, System Reset, I²C, USB, etc., need to be

processed with shield GND all the way. The good shield GND process can guarantee the

continuity of the impedance, anti-interference, and prevent EMI radiation.

The following fugure is the LCD_CLK signle connectivity with shield GND process

Sept. 25, 2018 Page 11 of 26 Rev 1.00

RDK-N9H20

2.3 Power supply and power filter design consideration

2.3.1 DDR MVDD & Core Power 1.8V Design

About filter capacitance material and placement quantity

Capacity material recommended to use X7R material, placing quantity suggest that the corresponding

chip should have at least one 104pF capacitors at the each supply pin, and some special entrances

suggest placing the 104 pF+10 uF combination.

Detail please refer to RDK-N9H20 schematic diagram for details.

The layout pattern and the filter capacitance placement are shown in the image below.

Sept. 25, 2018 Page 12 of 26 Rev 1.00

RDK-N9H20

2.3.2 I/O 3.3V Power Design

About filter capacitance material and placement quantity

Capacity material recommended to use X7R material, placing quantity suggest that the corresponding

chip should have at least one 104pF capacitors at the each supply pin, and some special entrances

suggest placing the 104 pF+10 uF combination.

Detail please refer to RDK-N9H20 schematic diagram for details.

The layout pattern and the filter capacitance placement are shown in the image below.

Sept. 25, 2018 Page 13 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

2.4 Main Clock 12MHz Design Suggestion

The 12MHz oscillator is the heart of the N9H20 chip and should be preferred in layout. Layout Basic

principles: As close as possible to the chip pin, trace lines shoud be straight doesn’t be bent, and

important thing is that XTAL part at the bottom has a complete GND plane.

PCB layout skill was shown as below figure.

Sept. 25, 2018 Page 14 of 26 Rev 1.00

RDK-N9H20

2.5 RESET Layout Suggestion

For system ESD capability and stability, the RESET signal design and layout traces routing are worth

a comprehensive consideration to do that best protection.

Schematic details please refer to the schematic diagram of the RDK-N9H20, about the PCB layout

was shown as below figure.

Sept. 25, 2018 Page 15 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

3 RDK-N9H20 DEMO BOARD USE DESCRIPTION

The RDK-N9H20 demo board is powered by DC +5V and is accessed by the CON3 pin-1 (+5V) and

the pin-4 (GND).

The demo board system block as the figure.

3.1 System start up

Mode switching by Normal/USB recovery mode jumper (i.e. R64 install or not) as the be low figure



R64 pin un-install: Normal operation for NAND or SPI FLASH booting

R64 pin installation: USB booting for code programming through writer tool of PC utility.

Sept. 25, 2018 Page 16 of 26 Rev 1.00

RDK-N9H20

Sept. 25, 2018 Page 17 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

3.2 USB Port

The USB interface on the board is mainly used for burning the update program, this interface does not

have the power supply capability. When using, please choose to connect with this interface USB

extension cable connected with the PC and then power supply through the system supply 3

3.3 Communication Interface (UART0) uses

CON3 interface is combined with UART0 serial port and +5V power supply, serial port level is

standard TTL, communication baud rate is 115200bps.

The development period can be used for debug, which can be used for data interaction after the

product.

3.4 LCD Interface

HMI-H9H20 demo board supports LCD interface with a 40-pin FPC connector, it is apply to 4.3” LCD

resolution 480x272 RGB 24-bits and embedded 4-wires resistive type touch panel, the touch panel is

connectivity with N9H20 ADC directly.

Sept. 25, 2018 Page 18 of 26 Rev 1.00

RDK-N9H20

4 TEST REPORT

4.1 Power consumption

Condition : CPU@192MHz , emWin demo code is running

 Non-OS+emWin + 4.3 LCD：5V@335mA

 Non-OS+emWin without LCD: 5V@98mA

4.2 ESD Test Report

 Contact (PCB GND & LCD metal ）：+/- 4KV pass

 Air (LCD touch panel）：+/- 8KV pass

 Coupling (Horizontal & Vertical) ：+/- 4KV pass

4.3 EFT Test Result

 EFT±4000V 5.0KHz pass

Sept. 25, 2018 Page 19 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

4.4 EMI Test Result

 EN55032 Test Result : Pass

NUTINY-SDK-NUC505 USER MANUAL

Sept. 25, 2018 Page 20 of 26 Rev 1.00

RDK-N9H20

Sept. 25, 2018 Page 21 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

5 RDK-N9H20 DEMO BOARD SCHEMATIC

5.1 N9H20 Schematic

N9H20K

LQFP-128

Reliability for power-on setting

Reset

MAIN CLOCK

Power on setting

USB Device

N9H20

Sept. 25, 2018 Page 22 of 26 Rev 1.00

RDK-N9H20

5.2 LCD Schematic

I2C

LED Driver

RGB888

LED Back Light

奻諉宒

TOUCH_PANEL

LCD

Sept. 25, 2018 Page 23 of 26 Rev 1.00

NUTINY-SDK-NUC505 USER MANUAL

RDK-N9H20

5.3 Power Schematic

UART0

DC5V Power IN

IO POWER

CORE POWER

EXT_I/O Interface

SPI FLASH

POWER,Debug

Sept. 25, 2018 Page 24 of 26 Rev 1.00

RDK-N9H20

6 REVISION HISTORY

Date Revision

2018.09.25 1.00

Sept. 25, 2018

Description

Initially issued.

Page 25 of 26 Rev 1.00

RDK-N9H20

Important Notice

Nuvoton Products are neither intended nor warranted for usage in systems or equipment, any

malfunction or failure of which may cause loss of human life, bodily injury or severe property

damage. Such applications are deemed, “Insecure Usage”.

Insecure usage includes, but is not limited to: equipment for surgical implementation, atomic

energy control instruments, airplane or spaceship instruments, the control or operation of

dynamic, brake or safety systems designed for vehicular use, traffic signal instruments, all

types of safety devices, and other applications intended to support or sustain life.

All Insecure Usage shall be made at customer’s risk, and in the event that third parties lay

claims to Nuvoton as a result of customer’s Insecure Usage, customer shall indemnify the

damages and liabilities thus incurred by Nuvoton.

Sept. 25, 2018 Page 26 of 26 Rev 1.00