NXP Semiconductors OM13488 Manuale utente

UM10751

OM13488 8-bit GPIO Daughter Card User Manual

Rev. 1.0 — 11 October 2013

User manual

Document information

Info

Content

Keywords

Fm+ Development Kit, OM13320, GPIO, OM13303

Abstract

Installation guide and User Manual for the OM13488 8-bit GPIO Daughter

Card that connects to OM13320 Fm+ Development Kit. This board

permits easy and simple evaluation of most of NXP’s 8-bit I2C GPIO

portfolio of products.

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OM13488 8-bit GPIO User Manual

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Rev. 1.0 — 11 October 2013

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Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddres[email protected]

Revision history

Rev

Date

Description

1.0

20131011

Initial Release

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OM13488 8-bit GPIO User Manual

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1. Introduction

The OM13488 8-bit I2C GPIO Daughter Card connects to the OM13320 Fm+ Development

kit and permits easy evaluation of most of NXP’s 8-bit I2C GPIO portfolio of products.

Table_1 lists the supported devices.

The OM13488 8-bit I2C GPIO Daughter Card is shipped with no GPIO device soldered to the

board. The user must purchase the device he is interested in evaluating in a TSSOP16

package (the ordering part number suffix should be “PW” and the package designation

should be SOT403-1). These leaded packages should be relatively easy to solder to the

board with a low wattage, fine tipped soldering iron.

Table 1. Devices Supported by OM13488 8-bit I2C GPIO Daughter Card

Device

Description

Orderable Part Number

PCA6408A

Low-voltage, 8-bit I²C-bus and SMBus I/O

expander with interrupt output, reset, and

configuration registers

PCA6408APW

PCA8574A

Remote 8-bit I/O expander for I²C-bus with

interrupt

PCA8574APW

PCA8574

Remote 8-bit I/O expander for I²C-bus with

interrupt

PCA8574PW

PCA9534

8-bit I2C-bus and SMBus low power I/O port

with interrupt

PCA9534PW

PCA9538A

Low-voltage 8-bit I²C-bus I/O port with

interrupt and reset

PCA9538APW

PCA9538

8-bit I²C-bus and SMBus low power I/O port

with interrupt and reset

PCA9538PW

PCA9554A

8-bit I²C-bus and SMBus I/O port with

interrupt

PCA9554APW

PCA9554B

Low-voltage 8-bit I²C-bus and SMBus low

power I/O port with interrupt, weak pull-up

PCA9554BPW

PCA9554C

Low-voltage 8-bit I²C-bus and SMBus low

power I/O port with interrupt, weak pull-up

PCA9554CPW

PCA9554

8-bit I²C-bus and SMBus I/O port with

interrupt

PCA9554PW

PCA9670

Remote 8-bit I/O expander for Fm+ I²C-bus

with reset

PCA9670PW

PCA9672

Remote 8-bit I/O expander for Fm+ I²C-bus

with interrupt and reset

PCA9672PW

PCA9674A

Remote 8-bit I/O expander for Fm+ I²C-bus

with interrupt

PCA9674APW

PCA9674

Remote 8-bit I/O expander for Fm+ I²C-bus

with interrupt

PCA9674PW

PCAL6408A

Low-voltage translating, 8-bit I²C-bus/SMBus

I/O expander with interrupt output, reset,

PCAL6408APW

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OM13488 8-bit GPIO User Manual

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Device

Description

Orderable Part Number

and configuration registers

PCAL9538A

Low-voltage 8-bit I²C-bus and SMBus low

power I/O port with interrupt, reset and

Agile I/O

PCAL9538APW

PCAL9554B

Low-voltage 8-bit I²C-bus/SMBus low power

I/O port with interrupt, weak pull-up and

Agile I/O

PCAL9554BPW

PCAL9554C

Low-voltage 8-bit I²C-bus/SMBus low power

I/O port with interrupt, weak pull-up and

Agile I/O

PCAL9554CPW

PCF8574

Remote 8-bit I/O expander for I2C-bus with

interrupt

PCF8574PW

PCF8574A

Remote 8-bit I/O expander for I2C-bus with

interrupt

PCF8574APW

The pin configuration of these devices varies only a bit and the different pin selections are

made via jumpers.

2. Features of the OM13488 8-bit GPIO Daughter Card

 Direct connection to OM13320 Fm+ Development kit

 Footprint for a TSSOP16 package, user solderable

 Jumper configuration accommodates most NXP 8-bit GPIO

 Flexible power supply configuration: 3.3V, 5V or external supply

 Direct connection to OM13303 GPIO Target board for I/O visualization

 Jumper configuration of device I2C address

 LED indicators for power and INT

 Scope ground connection loop

3. Pin Configuration of 8-bit GPIO Devices

The different 8-bit GPIO devices pin configurations differ only slightly between devices. See

Fig 1 for a description of the different pinouts.

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OM13488 8-bit GPIO User Manual

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Fig 1. Pin Configuration 8-bit GPIO Devices

3.1 Power Supply Setup

Power supply voltages may be selected from the tester connector CN4 or the Fm+ board

CN2. If one selects Fm+ CN2, either 3.3V or 5V can be chosen. Additionally, the

PCA(L)6408 device implements two power supplies which are separately chosen, i.e. one

can be 3.3V and the other 5V for voltage level translation evaluation. Both of these power

supplies can be supplied externally by using TP1 and TP2 near the tester connector CN4.

See the schematic section at the end of this document for more details.

The jumpers for power supply selection are JP2, JP3, and JP4

3.2 Reset, Interrupt, and Address pins selection

The Reset, Interrupt and Address pins are used in combinations on various devices. The

selection matrix on the 8-bit GPIO board sends pins 2, 3, and 13 to determine if the pins are

address or function on JP9, JP10, and JP11. Then, if they are determined address pins, JP1,

JP7 and JP8 tie them to logic high or low. If they are determined to be function pins, the

other position of JP9, JP10 and JP11 tie them to the correct connector function pins. See the

schematic section at the end of this document for more details.

The logic high level for the address pins is VDDP.

PCA9670

PCA(L)9554B & C

PCA8574/74A

PCA9674/74A

PCF8574/74A

PCA(L)9538

PCA9672

PCA(L)6408

PCA(L)9538

PCA9672

PCA(L)9554B & C

PCA8574

PCA9674

PCF8574

PCA9670

VCC(I2C-bus) 116

ADDR 215

314

413 RESET

512

611

710

8 9

P0_3

P0_5

VSS

P0_4

P0_0

P0_1

P0_7

P0_2

P0_6

INT

VCC(P)

SDA

RESET

SCL

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4. Board Jumper Set Up

4.1 Power Supply Jumpers

The power supply selections for the OM13488 is very flexible and allows for detailed analysis

and evaluation of all the NXP 8-bit GPIO devices. JP3 labeled PWR selects between 5V

supplied from the tester connector CN4 (jumper between pin 2 and 3 labeled TSTR) and the

Fm+ board connector CN2 (jumper between pin 1 and 2). If 3.3V or external power operation

is desired, no jumper is required.

JP2 selects between 5V and 3.3V for a second power supply needed for PCA(L)6408A. If the

device under test is not PCA(L)6408A, leave this jumper open.

JP4 selects between 5V and 3.3V for the main power supply on pin 16 of the device under

test. Add a jumper between pins 2 & 3 for 3.3V or 1 & 2 for 5V.

For external power supply operation, do not jumper JP2, JP3 and JP4 and connect a voltage

source to TP2 for the main power supply connected to pin 16 of the device under test.

Connect another external voltage source to TP1 if the device under test is PCA(L)6408A.

See the schematic section at the end of this document for more details.

Fig 2. Power Jumpers and External Power Test Points

4.2 PCA8574, PCA8574A, PCA9534, PCA9554A, PCA9554B, PCA9554C,

PCA9554, PCA9674A, PCA9674, PCAL9554B, PCAL9554C, PCF8574,

PCF8574A

The PCA8557/A, PCA9534, PCA(L)5554x, PCA9674/A implement three address pins

and INT . This configuration ignores the power supply setup, but normally, only JP4 with a

jumper between pins 2 & 3 need be applied to power the device at 3.3V.

To configure the function pins, apply jumpers between pins 1 & 2 on JP10 and JP11 to

configure device pin 2 and pin 3 as addresses. Apply a jumper between pins 2 & 3 on JP9 to

configure device pin 13 as INT .

Then, apply jumpers to JP1, JP7 and JP8 to configure the desired I2C address. Logic high or

logic low is labeled on the board.

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OM13488 8-bit GPIO User Manual

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Fig 3. Jumper configuration for PCA8574, PCA8574A, PCA9534, PCA9554A, PCA9554B,

PCA9554C, PCA9554, PCA9674A, PCA9674, PCAL9554B, PCAL9554C, PCF8574,

PCF8574A

4.3 PCA9670

The PCA9670 implements three address pins and RST . This configuration ignores the

power supply setup, but normally, only JP4 with a jumper between pins 2 & 3 need be

applied to power the device at 3.3V.

To configure the function pins, apply jumpers between pins 1 & 2 on JP9, JP10 and JP11 to

configure pin 2 and pin 3 as addresses and pin 13 as RST .

Then, apply jumpers to JP1, JP7 and JP8 to configure the desired I2C address. Logic high or

logic low is labeled on the board.

Fig 4. Jumper Configuration for PCA9670

4.4 PCA9672, PCAL9538A, PCA9538A, PCA9538

The PCA9672 and PCA9538 series implement two address pins, RST and INT . This

configuration ignores the power supply setup, but normally, only JP4 with a jumper between

pins 2 & 3 need be applied to power the device at 3.3V.

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To configure the function pins, apply jumpers between pins 2 & 3 on JP9 and JP11 to

configure device pin 3 as RST and pin 13 as INT . Apply a jumper between pins 1 & 2 on

JP10 to configure device pin 2 as an address.

Then, apply jumpers to JP1 and JP7 to configure the desired I2C address. Logic high or logic

low are labeled on the board. Leave JP8 open.

Fig 5. Jumper Configuration for PCA9672, PCAL9538A, PCA9538A, PCA9538

4.5 PCAL6408A, PCA6408A

The PCA(L)6408A devices are level translating, Agile I/0 Expanders with two power supplies,

one address pin, RST and INT . The two power supplies may operate at different voltages

to translate from the I2C-bus voltage domain to a higher or lower I/O voltage. JP2 and JP4

may be set to the same or different voltages, or left open and external voltage sources

connected to TP1 and TP2. Unfortunately, there is a slight labeling issue on this board.

Device pin 1 is the VDDI power supply and is permanently connected to JP2 which selects

between VDDP and ground. Use a wire to jumper between pin 2 of JP1 to pin 3 of JP10

which is the board VDDI. See the datasheet for more details on voltage level translation.

Note that the 10K pull up resistors SDA and SCL, R5 and R6, are connected to VDDP which

may cause incorrect current readings if two different supplies are used.

To configure the function pins, apply jumpers between pins 2 & 3 on JP9 and JP11 to

configure device pin 3 as RST and device pin 13 as INT .

There is a slight labeling issue on this board. Device pin 2 is the only address pin and JP10

should jumper pins 1 and 2 to route the address to JP7 (A1 instead of A0).Then, apply a

jumper to JP7 to configure the desired I2C address. Logic high or logic low are labeled on the

board. Leave JP8 open.

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OM13488 8-bit GPIO User Manual

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Fig 6. Jumper Configuration for PCA(L)6408

5. Connector Pinouts

5.1 CN1 GPIO Target Board Connector

The OM13303 GPIO Target Board consists of eight LEDs and eight switches and connects

directly to the 8-bit GPIO board through CN1. The switches and LEDs permit easy exercise

of the I/O functionality of the device under test. The LEDs light red when the voltage on that

channel is below VCC x 0.3V and lights green when the voltage is above VCC x 0.7V. The

LEDs remain off when the voltage is between those two levels.

Table 2. CN1 GPIO Target Board Connector Pinout

CN1 Pin Number

Function

Board Connection

VDD

VDDP

Ground

GND

IO0

U1 pin 4

IO1

U1 pin 5

IO2

U1 pin 6

IO3

U1 pin 7

IO4

U1 pin 9

IO5

U1 pin 10

IO6

U1 pin 11

IO7

U1 pin 12

5.2 CN2 Fm+ Development Board Connector

The OM13488 can connect directly to the OM13320 Fm+ Development kit via CN2. This

connector provides power, I2C signals and other ancillary signals.

Note: The connector on the Fm+ board is a male, shrouded 14 pin type, while the connector

on the GPIO board is female, 18 pin.. The reason lies with the shroud around the 14 pin

connector. To ensure correct mating of the female with the male, two pin positions on both of

the female sides are unused.

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Table 3. CN2 Fm+ Board Connector

CN2 Pin Number

Function

Board Connection

—

No connect

—

No connect

SCL

SCL Bus 1 to U1 pin 14

SDA2

SDA Bus 2 not used

INT

Interrupt to INT LED and JP9 pin 3

RESET

JP9 pin 1, JP11 pin 3

+5V

JP3 pin 1

+3.3V

JP2 pin 3 and JP4 pin 3

GND

+3.3V

JP2 pin 3 and JP4 pin 3

+5V

JP3 pin 1

RESET

JP9 pin 1, JP11 pin 3

INT

Interrupt to INT LED and JP9 pin 3

SDA

SDA Bus 1 to U1 pin 15

SCL2

SCL Bus 2 not used

—

No connect

—

No connect

5.3 CN4 Tester Connector

Generation, inspection and logging of I2C-Bus data is easily achieved with third party

development tools from Total Phase (www.totalphase.com) There are two tools called

Aardvark and Beagle that direct connect to this board through CN4.

Note: Since SDA and SCL are both connected to the device under test, the Aardvark and the

Fm+ Development board cannot be used simultaneously. The Beagle, a bus sniffer, does not

have any issues.

Table 4. CN4 Tester Connector

CN4 Pin Number

Function

Board Connection

SCL

U1 pin 14

Ground

SDA

U1 pin 15

+5V

JP3 pin 3

+5V

JP3 pin 3

+5V

JP3 pin 3

—

Ground

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