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NXP Semiconductors

UM11712

PCAL6534EV-ARD evaluation board

PCAL6534

(U1) pin

Direction

CPLD

(U2) pin

LED

Switch

16 BIT – I/

O PORT (J6)

8 BIT – I/O

PORT (J7)

10 BIT – I/

O PORT (J9)

P1_5

I/O

IO_24

-

-

16

-

-

P1_6

I/O

IO_25

-

-

17

-

-

P1_7

I/O

IO_26

-

-

18

-

-

P2_0

Output

-

D4

-

-

2

-

P2_1

Output

-

D5

-

-

3

-

P2_2

Output

-

D6

-

-

4

-

P2_3

Output

-

D7

-

-

5

-

P2_4

Output

-

D8

-

-

6

-

P2_5

Output

-

D9

-

-

7

-

P2_6

Output

-

D10

-

-

8

-

P2_7

Output

-

D11

-

-

9

-

P3_0

I/O

-

-

-

-

-

3

P3_1

I/O

-

-

-

-

-

4

P3_2

I/O

-

-

-

-

-

5

P3_3

I/O

-

-

-

-

-

6

P3_4

I/O

-

-

-

-

-

7

P3_5

Input

-

-

SW1

-

-

8

P3_6

Input

-

-

SW2

-

-

9

P3_7

Input

-

-

SW3

-

-

10

P4_0

Input

-

-

SW4

-

-

11

P4_1

Input

-

-

SW5

-

-

12

Table 2. The I/O allocation table

...continued

The on-board LEDs can be disabled by placing JP1 jumper in 2-3 position (OPTION

1, see SPF-46656.pdf file). This feature is useful when the user uses the board with

external device connected to J5 I/O port. The switches are connected to the bus through

620 Ω series resistors (R53 – R57), to avoid bus conflict (short-circuit if the line is set

accidentally as output and the switch is pressed).

4.9 CPLD

The PCAL6534EV-ARD board contains a MAX V series CPLD from Intel/Altera (U2,

5M80ZE64C5N). The role of this IC is decoder / driver for the on-board four-digit LED

display (D13 to D16). The CPLD works as signal bridge between the ports P0 and P1

of the PCAL6534 IC and the LED displays. Additionally, a six lines control bus is linked

between MAX V CPLD and the Arduino port. For details, see SPF-46656.pdf schematic

file of PCAL6534EV-ARD daughterboard. The internal firmware of the MAX V CPLD is

controlled from the GUI application through the control bus. The CPLD control bus sets

the operation modes of MAX V CPLD. The MAX_CLK line is not used (IO_5/CLK0 pin of

U2 is masked). 

Table 3

 details the operation modes and the corresponding logic states of

CPLD control bus.

UM11712

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2022. All rights reserved.

User manual

Rev. 1.0 — 31 January 2022

10 / 31

Содержание UM11712

Страница 1: ...on board is a daughter card equipped with an Arduino port designated for easy test and design of PCAL6534 IC 34 bit port expander controlled through FM I 2 C 2 wire bus with RESET The board is fully c...

Страница 2: ...evaluation board Rev Date Description v 1 0 20220131 Initial version Revision history UM11712 All information provided in this document is subject to legal disclaimers NXP B V 2022 All rights reserved...

Страница 3: ...eavily depends on proper printed circuit board layout and heat sinking design as well as attention to supply filtering transient suppression and I O signal quality The product provided may not be comp...

Страница 4: ...access to the I O pins Additionally a Graphical User Interface Windows platform is provided to facilitate the evaluation of the daughterboard The GUI is used with the following NXP evaluation boards...

Страница 5: ...K package 4 Getting to know the hardware 4 1 PCAL6534EV ARD features I O connectors for external access to IC input output pins 5 user switches connected to I O pins of the IC 8 user LEDs connected to...

Страница 6: ...ocated on the board through the MAX V CPLD which acts as display decoder driver All 16 I O lines are shared with the 16 BIT I O PORT J6 The port P2 8 bit wide is shared with the on board user LEDs D4...

Страница 7: ...mated pin headers of Arduino Uno R3 connectors having the same electrical function and placed on the board so that the daughterboard can be directly inserted in the Arduino port The daughterboard use...

Страница 8: ...EV ARD board communicates with the host through an I 2 C bus pin A4 SCL pin B3 SDA The communication provides internal configuration of the I O expander reads the logic levels of the I O pins configur...

Страница 9: ...emoving JP1 jumper When D3 is inactive JP1 removed the open drain is polarized through R42 R42 also has the role to compensate the voltage drop of D3 assuring 3 3V high level in high state of the inte...

Страница 10: ...avoid bus conflict short circuit if the line is set accidentally as output and the switch is pressed 4 9 CPLD The PCAL6534EV ARD board contains a MAX V series CPLD from Intel Altera U2 5M80ZE64C5N Th...

Страница 11: ...ure 3 for details PCAL6534 pin Direct write Count Idle P0_0 P0_1 P0_2 P0_3 Write decimal numbers from the GUI to Digit 1 D16 The PCAL6534 pins are configured as outputs Read the current data from Digi...

Страница 12: ...onfigured as inputs and displayed in the GUI The range of the counter value is from 000 to 999 Bus line Function State Description 0 Low speed 7 5 Hz MAX_CTRL_0 Speed 1 High speed 60 Hz 0 down MAX_CTR...

Страница 13: ...ations and their default configurations Table 7 describes the test points located on the PCAL6534EV ARD board Ref Des Label Default Description 1 2 Enable the user LEDs D4 D11 JP1 USER LED ON OFF 1 2...

Страница 14: ...d configuring software tools PCAL6534EV_ARD evaluation board is designed and built as a daughterboard able to work in conjunction with a motherboard equipped with an Arduino port The board was built t...

Страница 15: ...th IMXRT1050 EVK The following items are necessary One IMXRT1050 EVK board One PCAL6534EV ARD daughterboard One USB A USB Micro B cable A PC with Windows 10 operating system The IMXRT1050 EVK motherbo...

Страница 16: ...connector J28 connect the EVK board to an USB port of the computer 4 Install the IMXRT1050 target firmware download from NXP site and see UM11581 Arduino Arduino shields GUI and firmware installation...

Страница 17: ...B connectors P5 P6 P9 and P10 The board can be powered through any USB port Using P6 USB connector to connect the board to the PC simplifies the start up operation because P6 is designated for debuggi...

Страница 18: ...LPCXpresso55S69 motherboard before starting The following steps describe how to assemble program and operate the configuration shown in Figure 7 UM11712 All information provided in this document is su...

Страница 19: ...EV ARD with an i MX 8M Mini LPDDR4 EVK board When an i MX 8M Mini LPDDR4 EVK board is used with the PCAL6534EV ARD board a third board IMX8MMINI IARD interposer board must be used especially designed...

Страница 20: ...ch SW101 on the EVK board must be set to ON position to power up the setup Data communication is achieved by routing a separate USB Micro B type cable from an USB port on the PC to debug port J901 on...

Страница 21: ...equipped with an Arduino port and an EVK without an Arduino port In the first case a firmware shall be developed according with PCAL6534EV specifications and then simply attach PCAL6534EV ARD daughter...

Страница 22: ...The port is automatically selected by the system in the picture is COM 3 Select Board allows the user to select the correct daughterboard the application can support four different boards In Figure 1...

Страница 23: ...alues will be written in the daughterboard Idle Mode In this mode the display is off except LCD 1 D13 which indicates the sign Figure 12 Graphical interface CPLD tab activated Clicking on SWITCH tab a...

Страница 24: ...window the parameters of the I O connected to on board user LEDs can be set The parameters are Value set the status of the on board user LED the logic state of the output Output drive strength sets th...

Страница 25: ...disable the internal pull up or pull down resistor Pull UP Down Selection select the internal pull up or pull down resistor Interrupt Mask enable disable the interrupt mask for the input Polarity Inv...

Страница 26: ...16 displays the current value of the internal registers of the IC every time when Read button is clicked To find details about internal registry see the PCAL6534 datasheet UM11712 All information prov...

Страница 27: ...ESD Electro Static Discharge EVK Evaluation Board GUI Graphical User Interface I 2 C bus Inter Integrated Circuit bus IC Integrated Circuit I O Input Output LED Light Emitting Diode PC Personal Comput...

Страница 28: ...ounter timers SCTimer PWM PLU 16 bit 1 0 Msamples sec ADC Comparator Temperature Sensor AES PUF SHA CRC RNG Product data sheet NXP Semiconductors 6 i MX 8M Mini LPDDR4 EVK Board Hardware User s Guide...

Страница 29: ...is responsible for doing all necessary testing for the customer s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the...

Страница 30: ...0 EVK board operation 16 Fig 7 PCAL6534EV ARD daughterboard and LPCXpresso55S69 motherboard before starting 18 Fig 8 PCAL6534EV ARD daughterboard LPCXpresso55S69 motherboard operation 19 Fig 9 The ass...

Страница 31: ...rs and test points 13 5 Installing and configuring software tools 14 6 Configuring the hardware 15 6 1 Using the PCAL6534EV ARD with an IMXRT1050 EVK board 15 6 2 Using the PCAL6534EV ARD with an LPCX...

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