Cypress CY3650 Manual de usuario

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CY3650

USB Development System

User’s Guide

Version 2.4

June 30, 1999

DOCUMENT HISTORY PAGE

Document Title: USB Development System User’ s Guide

Document Number:

REV ECN NO. ISSUE

DATE

ORIG.

CHANGE

DESCRIPTION OF CHANGE

0.9 –Preliminary Release

1.0 –9/27/96 TIW Update switches, I/O, misc., 24pin pkg

1.1 –11/20/96 JDW Update switches, pin list, suspend

1.2 –

2.0 –6/17/97 TEN Modified to incorporate CY7C6341x and

CY7C6351x

2.1 –7/30/97 TEN Changed J1 odd pins to even and even to odd.

Expanded explanation of serial buffer size

2.2 –12/16/97 TEN Fixed Table 7, J2 Pin 30 changed from

“ MR_” (duplicate) to “ MW_”

2.3 –2/27/98 TEN Added TOC plus a number of changes and

corrections

2.4 -6/30/99 TEN Changed Cypress Logo to be part of file

Ver 2.4 – i –

CY3650 USB Development System User’ s Guide

1. Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.1. Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.2. Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.3. Ribbon Cable connectors J1 and J2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.4. PC Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.5. Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4. Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5.1. Differences between the chip and the development board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5.2. Firmware ROM vs. RAM operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5.3. PC debug interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.4. I/O Port operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.5. Suspend Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.6. Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5.7. USB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6. Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6.1. Target Chip and Connector J1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6.2. J2 - Microcontroller Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6.3. J3 - RS232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

– ii – Ver 2.4

CY3650 USB Development System User’ s Guide

Ver 2.4 – 1–

CY3650 USB Development System User’ s Guide

1. Overview

The Cypress USB Development System is a powerful tool to assist development of user hardware and firmware

with emulated Cypress USB ICs. In the full development system environment (Figure 1), a PC-based interface

facilitates debugging through break-traps, single stepping, and display/modification of registers and data RAM. In

this mode, firmware can be implemented in on-board EPROM, or downloaded to program RAM. The RAM option

provides a quick and easy method for testing firmware revisions.

Stand-alone mode (Figure 2) allows portable system operation. In this case, user firmware is loaded in EPROM,

and only power need be applied to produce a fully operating emulated USB chip.

Figure 3 shows a block diagram of the development board, illustrating the major system components and the user

interfaces. The board supports a family of Cypress USB ICs, with varying amounts of on-chip EPROM, RAM, I/O,

Development

Board

Logic Analyzer

Target System

Wall Bug

USB

RS-232

J1J2

Figure 1. Typical USB Development Environment

Development

Board

Target System

Wall Bug

Figure 2. Stand-alone Environment

J2 J1

– 2– Ver 2.4

CY3650 USB Development System User’ s Guide

etc. Consult the individual device specification for details on the IC being emulated.

2. Kit Contents

The USB Development System contains the following items:

• USB development board

• Wall transformer power supply (“ Wall bug”)

• USB cable

• RS-232 9-pin to 9-pin cable

• 9-pin to 25-pin adapter for RS-232 cable

• Quick Start User’ s Guide (yellow)

• This user’ s guide

• USB Development System Software Guide

• CYASM Assembler User’s Guide

• PC interface software

• CYASM Assembler software

• Registration Card

3. Hardware Installation

This section describes the hardware installation steps necessary for operating the development board. These

include supplying power to the board, connecting to a PC, and configuring on-board switches. Refer to Figure 4 for

locations of components mentioned in this document; Figure 1 shows typical connections for the system develop-

ment environment.

To/From

Serial

Interface

Engine

USB

D+

D−

J13

Power

+5V

Reset

Switch

Options

Program RAM

8k x 8

Program ROM

8k x 8

Data RAM

256 x 8

UART

USB

Transceiver

Microcontroller

Voltage

Regulators +3.3V

Port

Transceivers

Port0

Port1

Port2

Port3

Figure 3. Development Board Functional Block Diagram

Ver 2.4 – 3–

CY3650 USB Development System User’ s Guide

3.1. Power Connection

The development board is designed to be powered by the enclosed wall transformer. Connect the transformer to a

110V AC source, and to power jack J13 on the board. +5V and +3.3V are generated by regulators on the board.

The green LED will light when power is applied.

3.2. Jumpers

Jumper JP1, at the right side of Figure 4, applies VDD (+5V) to pin 57 of connector J1. Without JP1, no connection

to VDD occurs on J1. The board is shipped with the jumper installed.

3.3. Ribbon Cable connectors J1 and J2

The diagram above correctly depicts the location of pin 1 for both J1 and J2. However the printed wiring board

shows J1 pin 1 incorrectly. Please refer to figure 4 when locating pin numbers.

3.4. PC Communication

For communicating with a PC, plug the enclosed RS-232 cable into the 9-pin connector J6 on the board. The other

end of the cable should be connected to the appropriate COM port on the PC, typically COM1 or COM2, depend-

ing on the PC’ s configuration. A 9-pin to 25-pin adapter is provided in case the PC port uses a 25-pin connector.

Cypress Semiconductor

1/12/97

Rev B

P/N MPU-80-EMU

JP1

JP2

RS3

RS11

RS9

RS7RS5

RS8RS6

RS4 RS10

C51

J12

U11

D10

C25

C45

U12

U10

J10

RP1

RS1

U15

U14

U13

J13

C52

C53

RS2

J11

Figure 4. Development Board Layout

(User EPROM)

D11

USB Conn.

– 4– Ver 2.4

CY3650 USB Development System User’ s Guide

The required communication settings for the PC are:

It is also recommended that the UART FIFO size settings be set tothe minimum values. In Windows 95 the follow-

ing steps will change the FIFO settings:

•On the desk-top, double click on the “ My Computer” Icon and then double click on the “ Control Panel” Icon. Alter-

nately, use the “start” menu and choose “ Settings” and then “ Control Panel”.

•In the “ Control Panel” window, double click on the “ System” Icon.

•In the “ System” window click on the “ Device Manager” tab. Then scroll down through the list of devices to the serial

port used for the USB Development Board, this is usually COM1 or COM2. Select the appropriate device by double

clicking.

•This brings up a serial device window, inside you will see tabs, select the “ Advanced” tab. This sub-widow contain the

settings for the serial transmit and receive FIFOs. Set the receive FIFO to 1 and set the transmit FIFO to 3 if this is a

valid setting, otherwise set the FIFO size to 1.

3.5. Switch Settings

Two 8-position DIP switches provide configuration options for the two on-board FPGAs. Table 1 and Table 2 list

options for switches S1 and S3 respectively. Further information on these options is given in Section 5. Unused

switches should be left in the default setting, as these may support internal test modes.

Baud Rate 19200

Data Bits 8

Parity None

Stop Bits 1

Flow Control None used

Table 1: Switch S1 Configuration

Position Open (1) Closed (0) Function

1Enable Disable USB Bus Reset

2Enable Disable Watch Dog Reset

3Enable Disable Cext (wake up)

4Enable Disable IO Port Input Only Mode

5Enable Disable Suspend on Power On Reset

6Default –Required

7Default –Required

8Default –Required

Ver 2.4 – 5–

CY3650 USB Development System User’ s Guide

4. Software Installation

For information on operation of the interactive PC debug environment, refer to the USB Development System

Software Guide.

For information on the CYASM assembly language programming and the assembler, refer to the CYASM Assem-

bler User’ s Guide.

5. Operation

5.1. Differences between the chip and the development board

The development board is lacking some of the features that are present on the integrated circuit. Three important

differences are:

1. No programmable pull-up resistors on GPIO pins

2. No programmable DAC currents on GPIO pins

3. The development board is not bus powered and therefore it is not initialized when the USB connector is

first attached.

5.2. Firmware ROM vs. RAM operation

The user’s program code will be executed from either a ROM (U5) or program RAM, depending on the setting of

switch S3-1 (see Table 2). The U5 ROM is a Cypress CY7C261-45, an 8k x 8 UV-erasable EPROM. Only 4k of

the EPROM is currently addressable. The program RAM supports the same memory size as the EPROM.

To program or erase the EPROM, refer to the data sheets for the Cypress CY7C261-45. The part can be repeatedly

reprogrammed as user firmware is updated. Follow appropriate ESD precautions when handling the part. When

installing U5 in the development board, note the IC orientation guide, shown on the board and in Figure 4.

The following examples illustrate typical procedures for operating from either ROM or RAM.

Example 1: Program ROM Operation

1. Develop assembly code; program this into the U5 Cypress CY7C261-45 EPROM.

2. Remove power from the development board.

3. Install U5 into the development board.

4. Set switch S3-1 for program ROM operation (see Table 2)

5. Apply power to the board.

Table 2: Switch S3 Configuration

Position Open (1) Closed (0) Function

1Program RAM Program ROM (U5) User-code Source

2Run on Reset Halt on Reset Operation at Reset

3–Default Unused

4–Default Unused

5–Default Unused

6–Default Unused

7–Default Unused

8–Default Unused

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