PCAL6534EV-ARD

UM11712 PCAL6534EV-ARD evaluation board Rev. 1.0 — 31 January 2022 User manual Document information Information Content Keywords PCAL6534, I C-bus, 34-bit I/O bus, Arduino port, EVK Abstract The PCAL6534EV-ARD evaluation board is a daughter card equipped with an Arduino port, designated for easy test and design of PCAL6534 IC, 34-bit 2 port expander, controlled through FM+ I C 2-wire bus, with RESET. The board is fully compliant with IMXRT1050 EVK, LPCXpresso55S69 (LPC55S69EVK) and i.MX 8M Mini LPDDR4 EVK (8MMINILPD4-EVK, 8MMINID4-EVK), including GUI software control. The board can be attached to any device equipped with an Arduino port. 2 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Revision history Rev Date Description v.1.0 20220131 Initial version UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 2 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board IMPORTANT NOTICE For engineering development or evaluation purposes only NXP provides the product under the following conditions: This evaluation kit is for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY. It is provided as a sample IC presoldered to a printed-circuit board to make it easier to access inputs, outputs and supply terminals. This evaluation board may be used with any development system or other source of I/O signals by connecting it to the host MCU computer board via off-the-shelf cables. This evaluation board is not a Reference Design and is not intended to represent a final design recommendation for any particular application. Final device in an application heavily 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 complete in terms of required design, marketing, and or manufacturing related protective considerations, including product safety measures typically found in the end device incorporating the product. Due to the open construction of the product, it is the responsibility of the user to take all appropriate precautions for electric discharge. In order to minimize risks associated with the customers’ applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. For any safety concerns, contact NXP sales and technical support services. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 3 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 1 Introduction This document describes the PCAL6534EV-ARD evaluation board. The evaluation 2 board is built around the PCAL6534, low-voltage translating, 34-bit I C-bus/SMBus I/ O expander with interrupt output, reset, and configuration registers, produced by NXP Semiconductors. The evaluation board serves as a daughter card that can be connected through an Arduino port to various Arduino compatible (including original Arduino Uno R3) EVK / motherboards for testing and measuring the characteristics of the PCAL6534 Device Under Test (DUT). The PCAL6534EV-ARD daughter card communicates through the Arduino port with the 2 2 host device via the Fast-mode I C-bus. Alongside the I C-bus, three additional digital lines allows the motherboard to control the DUT through the same Arduino port. Power is delivered from the motherboard (EVK) through the Arduino port also. The I/O pins of the DUT are organized in five ports. The port P0, P1, P2, and P3 are 8-bit wide, while P4 has two bits only. The port P0 and P1 controls an on-board four-digit LED display through the MAX V CPLD (Intel/Altera). The board contains also eight on-board LEDs and five switches, connected to the I/O pins of the DUT. All I/O lines are shared with three connectors for external 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: IMXRT1050 EVK Board, LPCXpresso55S69 Development Board and i.MX 8M Mini LPDDR4 EVK Board. 2 Finding kit resources and information on the NXP web site NXP Semiconductors provides online resources for evaluation board and its supported device(s) on http://www.nxp.com. The information page for PCAL6534EV-ARD evaluation board is at http://http:// www.nxp.com/PCAL6534EV-ARD. The information page provides overview information, documentation, software and tools, parametrics, ordering information and a Getting Started tab. The Getting Started tab provides quick-reference information applicable to using the PCAL6534EV-ARD evaluation board, including the downloadable assets referenced in this document. 2.1 Collaborate in the NXP community The NXP community is for sharing ideas and tips, ask and answer technical questions, and receive input on just about any embedded design topic. The NXP community is at http://community.nxp.com. 3 Getting ready Working with the PCAL6534EV-ARD requires the kit contents, additional hardware, and a Windows PC workstation with installed software. 3.1 Kit contents • Assembled and tested evaluation board in an antistatic bag UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 4 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board • Quick Start Guide 3.2 Assumptions 2 Familiarity with the I C-bus is helpful but not required. 3.3 Static handling requirements CAUTION This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken during transport and handling. You must use a ground strap or touch the PC case or other grounded source before unpacking or handling the hardware. 3.4 Minimum system requirements This evaluation board requires a Windows PC workstation. Meeting these minimum specifications should produce great results when working with this evaluation board. • Computer with Windows 10 • One USB port (either 3.0 or 2.0 or 1.1 compatible) • One of three EVK boards (MIMXRT1050-EVK, LPC55S69-EVK, 8MMINILPD4-EVK) along with the associated firmware / GUI software • USB cable for power and data connection between PC and EVK board (if not included in the EVK 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 I/O pins of the IC On-board LED display controlled from the I/O pins of the IC Equipped with Arduino Uno R3 port for direct connection with Arduino devices Fully compliant with IMXRT1050 EVK board, including GUI (Windows 10) Fully compliant with LPCXpresso55S69 dev. board, including GUI (Windows 10) Compliant with i.MX Mini LPDDR4 EVK board, including GUI (Windows 10) Note: For i.MX Mini LPDDR4 EVK Board is necessary to use IMX8MMINI-IARD interposer board between the EVK and PCAL6534EV-ARD daughterboard (see IMX8MMINI-IARD User Manual). 4.2 Kit featured components Figure 1 identifies the main components on the board. The main elements are called out in the picture. The Arduino port connectors (J1, J2, J3, J4) are located on the bottom side of the board. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 5 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 1. The PCAL6534EV-ARD board picture, top view (up) and bottom view (down) 4.3 Block diagram Figure 2 shows a block diagram of the PCAL6534EV-ARD daughter board. Alongside the DUT (U1), the board includes a series of peripherals that assures the operation of the 2 board. U1 is linked to Arduino interface (J1 to J4) through two busses: the I C-bus and the control bus. The port P0 and P1 (8-bit wide each) controls the four-digit LED display (D13 to D16) located 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 to D11, and the 8 BIT I/O PORT (J7) Th first five LSB I/O lines of the port P3 (8-bit wide) are linked to the 10 BIT I/O PORT (J8) only. The remaining tree lines of P3 and the port P4 (2-bit wide) are shared with onboard user switches (SW1 to SW4) and the 10 BIT I/O PORT (J8). The board contains two LDO voltage regulators, for 3.3 V (U3) and 1.8 V (U4), power rails. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 6 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board #32 D13 - D16 MAX V CPLD #6 J3 J4 U2 INTEL PCAL6534 #16 34 BIT I/O EXPANDER ARDUINO INTERFACE P0_0 to P0_7 P1_0 to P1_7 J1 #16 #16 J2 J6 USER LEDs SCL I2C SDA D4 D5 D6 D7 D8 D9 D10 D11 CONTROL BUS #3 5V 16 BIT I/O PORT 3.3V 1.8V LDO 1 LDO 2 U3 U4 P2_0 to P2_7 #8 8 BIT I/O PORT J7 USER SW P3_0 to P3_7 P4_0, P4_1 #10 10 BIT I/O PORT J8 NXP SW1 U1 SW2 SW3 SW4 SW5 aaa-044875 Figure 2. PCAL6534EV-ARD block diagram 4.4 Schematic diagram The schematic diagram of PCAL6534EV-ARD is available at URL: http://www.nxp.com/ PCAL6534EV-ARD. 4.5 Arduino port J1, J2, J3, and J4 are the 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 uses only five signal lines. Table 1 shows the pin chart of connectors, and the used lines in the circuit (see also the SPF-46656.pdf schematic file): Table 1. The pin chart of Arduino connectors and their usage Ref Des # J1 (Power) 2 J2 (analog, digital, I C) UM11712 User manual Arduino label PCAL6534EV-ARD function 1 NC Not used 2 IOREF Not used 3 RESET Not used 4 3.3V Not used 5 5V Power supply 6 GND Power supply return 7 GND Power supply return 8 Vin Not used 1 A0 Not used 2 A1 Not used All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 7 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Table 1. The pin chart of Arduino connectors and their usage...continued Ref Des # J4 (digital, UART, PWM) J3 (mixed) Arduino label PCAL6534EV-ARD function 3 A2 Not used 4 A3 Not used 5 A4 / SDA I C – SDA 6 A5 / SCL I C – SCL 1 D0 / RX Not used 2 D1 / TX Not used 3 D2 MAX_CLR 4 D3 / PWM MAX_OE 5 D4 MAX_CTRL_2 6 D5 / PWM MAX_CTRL_1 7 D6 / PWM MAX_CTRL_0 8 D7 MAX_CLK 1 D8 RESET (control bus) 2 D9 / PWM ADDR (control bus) 3 D10 / SS / PWM INT (control bus) 4 D11 / MOSI / PWM Not used 5 D12 / MISO Not used 6 D13 / SCK Not used 7 GND Power supply return 8 AREF Not used 9 A4 / SDA Not used 10 A5 / SCL Not used 2 2 The circuit is supplied with 5V from Arduino port through J1 and J3. Pin no. 5 of J1 is 5V power supply, while pin no. 6, 7 of J1, and pin no. 7 of J3 represents the power supply return (ground). 2 4.6 I C-bus 2 The PCAL6534EV-ARD board communicates with the host through an I 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 configured as inputs, and sets the logic level on the I/O pins configured as outputs. The internal configuration of the DUT includes: direction of the digital I/O lines (input or output), polarity inversion, pull-up / pull-down resistor enable, output strength, output configuration (push-pull or opendrain), input latch configuration, and interrupt register. The transaction speed of the 2 I C-bus is compliant with Standard-mode (100kHz), Fast-mode (400kHz), and Fast2 mode plus (1MHz). For more details about I C description and bus transactions, see PCAL6534 datasheet (https://www.nxp.com/docs/en/data-sheet/PCAL6534.pdf). The 2 pull-up resistors of the I C-bus are R43 and R44 (see SPF-46656.pdf schematic file). UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 8 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 4.7 Control bus The control bus manages RESET, ADDR, and INT pins of the PCAL6534 IC. The RESET pin is digital input and is controlled by the system host. Its role is to reset the I/ O expander when a time-out or other improper operation occurs. Asserting a low level of this line forces a reset operation of the internal control section of the IC (puts the internal 2 registers in their default state and forces a reinitialization of the I C state machine, in the same manner as power-on sequence). The RESET pin is controlled by the EVK motherboard through J3-1 (ARDUINO port). The ADDR pin is digital input and represents a programmable hardware address package which can be asserted low or high, to assign two different slave addresses. The input is controlled by the EVK through J3-2 (Arduino port). The INT pin is an open-drain interrupt output, activated when any input state differs from its corresponding input port register state, indicating to the host system that an input state has changed. The line is monitored by the EVK through J3-3 ARDUINO port and locally by the LED (D3) located on the daughterboard. The LED D3 can be deactivated by removing 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 interrupt line (see SPF-46656.pdf schematic file). 4.8 I/O bus The PCAL6534 IC contains 34 configurable I/O pins, organized in five ports, P0 to P4. The ports P0 to P3 are 8-bit wide, while P4 is 2-bit wide. P0 and P1 are allocated to the four-digit LED display (through MAX V CPLD, U2). The port P2 drives the on-board LEDs (D4 to D11). The on-board user switches SW1 to SW5 are connected to port P3 and P4. From port P3 the last MSB three lines are allocated to the on-board switches. All I/O lines of the PCAL6534 IC are linked to the I/O port connectors for external access of the I/ O lines (see the schematic of the daughterboard). Table 2 shows the allocation of the PCAL6534 I/O lines (U1). Table 2. The I/O allocation table 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) P0_0 I/O IO_9 - - 3 - - P0_1 I/O IO_10 - - 4 - - P0_2 I/O IO_11 - - 5 - - P0_3 I/O IO_12 - - 6 - - P0_4 I/O IO_13 - - 7 - - P0_5 I/O IO_14 - - 8 - - P0_6 I/O IO_15 - - 9 - - P0_7 I/O IO_16 - - 10 - - P1_0 I/O IO_17 - - 11 - - P1_1 I/O IO_18 - - 12 - - P1_2 I/O IO_19 - - 13 - - P1_3 I/O IO_22 - - 14 - - P1_4 I/O IO_23 - - 15 - - UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 9 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Table 2. The I/O allocation table...continued 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 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 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 10 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Table 3. CPLD control bus Bus line Direct Write Count Idle MAX_CLK Not used Not used Not used MAX_CLR 0 0 1 MAX_OE 0 1 0 MAX_CTRL_0 X Controls the indication [3] of digit 4 (D9) MAX_CTRL_1 MAX_CTRL_2 [1] [2] [3] Controls the speed [2] of counting [1] X [1] X Controls the direction [2] of counting Controls the counting status [1] 0 [2] X [1] Don't care See Section 4.9.2 and Table 4 See Section 4.9.1 4.9.1 Direct write When this mode is activated, the user can write decimal values from the GUI directly to the on-board LED display on the PCAL6534EV-ARD board. For the Digit 1, 2, and 3 (D14, D15, and D16), the user can write decimal numbers from 0 to 9. For Digit 4 (D13), the user can set the letter “U” or “d” (the initials of “Up” and “down”). This setting is realized through the MAX_CTRL_1 (not trough one I/O line of the PCAL6534 IC). The dots of the digits can be set separately. See Table 4 and Figure 3 for details. Table 4. MAX V data bus PCAL6534 pin Direct write Count Idle P0_0 P0_1 P0_2 Write decimal numbers from the GUI to Read the current data from Digit 1 (D16). The PCAL6534 pins are Digit 1 (D16). The PCAL6534 configured as outputs. pins are configured as inputs. P0_3 P0_4 P0_5 P0_6 Write decimal numbers from the GUI to Read the current data from Digit 2 (D15). The PCAL6534 pins are Digit 2 (D15). The PCAL6534 configured as outputs. pins are configured as inputs. P0_7 P1_0 P1_1 P1_2 Write decimal numbers from the GUI to Digit 3 (D14). The PCAL6534 pins are Read the current data from configured as outputs. Digit 3 (D14). The PCAL6534 pins are configured as inputs. No action. The MAX V corresponding pins are in high Z. P1_3 P1_4 Set ON/OFF the dot of Digit 1 (D16) P1_5 Set ON/OFF the dot of Digit 2 (D15) P1_6 Set ON/OFF the dot of Digit 3 (D14) P1_7 Set ON/OFF the dot of Digit 4 (D13) UM11712 User manual The PCAL6534 pins are configured as inputs. The lines are set in high state in MAX V. All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 11 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 4.9.2 Count mode In this mode, an internal counter clocked by the RC oscillator of MAX V counts up and down, at low speed (clock frequency: 7.6 Hz), or high speed (clock frequency: 61 Hz). The counting status, direction, and speed are set by the MAX_CTRL_# lines of the control bus. See Table 5 for MAX_CTRL lines. The current value of the counter is sent to ports P0 and P1 of the DUT IC (configured as inputs) and displayed in the GUI. The range of the counter value is from 000 to 999. Table 5. MAX_CTRL_# control lines Bus line Function MAX_CTRL_0 Speed MAX_CTRL_1 Direction MAX_CTRL_2 Status State Description 0 Low speed (7.5 Hz) 1 High speed (60 Hz) 0 down 1 up 0 Counter is ON 1 Counter is OFF (the counting is stopped) 4.9.3 Idle mode In this mode, the internal counter is stopped, the LED display is OFF, except the Digit 4 (D13) which is displaying “-“ (minus) sign (see Figure 3). UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 12 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Count mode - counting up Count mode - counting down Idle mode Figure 3. PCAL6534EV-ARD on-board LED display 4.10 Jumpers and test points The board contains two jumpers and several test points. Table 6 and Figure 4 details the jumper locations and their default configurations. Table 7 describes the test points located on the PCAL6534EV-ARD board. Table 6. PCAL6534EV-ARD jumpers Ref Des Label Default JP1 USER LED - ON / OFF 1-2 JP2 INT MONITOR – ON / OFF OFF UM11712 User manual Description 1-2: Enable the user LEDs (D4 – D11) 2-3: Disable the user LEDs (D4 – D11) OFF: Disable the interrupt monitor LED (D12) All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 13 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Table 6. PCAL6534EV-ARD jumpers...continued Ref Des Label Default Description ON: Enable the interrupt monitor LED (D12) Figure 4. PCAL6534EV-ARD Jumper locations Table 7. PCAL6534EV-ARD test points Ref Des Test point / jumper label TP1 5V TP2 3.3V 3.3 V power rail TP3 1.8V 1.8 V power rail TP4 GND Ground TP5 GND Ground TP6 RST RESET input of PCAL6534 IC TP7 ADDR ADDR input of PCAL6534 IC TP8 SDA SDA line (I C-bus) TP9 SCL SCL line (I C-bus) 5 Description 5 V power supply 2 2 Installing and 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 to be fully compatible with the following NXP Evaluation (EVK) boards: • IMXRT1050 EVK Board; • LPCXpresso55S69 Development Board; • i.MX 8M Mini LPDDR4 EVK Board; Each mentioned above evaluation / development board benefits by firmware support which can be downloaded from NXP company site (www.nxp.com/). Before starting, the EVK motherboard must be programmed with the corresponding firmware package. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 14 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Additionally, a GUI application (Windows 10) is available for download from the NXP site, allowing rapid testing and operation of PCAL6534EV-ARD daughterboard through one of above mentioned EVKs. The GUI application is common for all three EVKs and for the PCAL6xxx I/O expander development card family, manufactured by NXP (PCAL6408A, PCAL6416A, PCAL6524 and PCAL6534 ICs). For details regarding installation of the EVK firmware and GUI host software on PC please download EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf instruction file fromwww.nxp.com/. Once the software is installed, the first step is to select the correct combination EVK – PCAL6534EV-ARD daughter card, and then the board can be controlled from the GUI interface. SeeSection 6 and Section 7 for more details regarding the operation of PCAL6534EV-ARD from GUI software. 6 Configuring the hardware 6.1 Using the PCAL6534EV-ARD with an IMXRT1050 EVK board Figure 5 shows the required hardware for operation of the PCAL6534EV-ARD daughterboard with 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 motherboard can be powered by one of the three methods: • Connecting an external 5VDC power supply to the barrel power connector (J2) on the board • Connecting an USB cable from the PC to the Micro-B USB connector (J9) on the board • Connecting an USB cable from the PC to the USB connector (J28) on the board. When the PC is connected in this fashion, the USB port can simultaneously act as a debug interface. Therefore, by using a single USB cable connected to J28, the EVK can be powered and at the same time linked to the PC for data exchange. The older USB ports (from PC) are not able to deliver the necessary current (500mA), before establishing the communication, use an external power supply (connected to J2). From J1 on the EVK board (see Figure 5) the user can select the power configuration for the motherboard. For further details, download the IMXRT1050 EVK Board Hardware User Guide (MIMXRT1050EVKHUG.pdf) available here (link to be set). UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 15 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 5. PCAL6534EV-ARD daughterboard and IMXRT1050 EVK board, before starting To configure the hardware and workstation, complete the following procedure: 1. Configure the suitable power configuration of EVK (J1). If using J28 for power supply, the J1 jumper shall be placed in position 5-6. If using an external power supply (connected to J2), the jumper J1 will be placed in position 1-2. 2. Insert the PCAL6534EV-ARD daughter card on the Arduino connector of the EVK (see Figure 5). 3. Using USB 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 manual for step-by-step instructions). 5. Install GUI application (see UM11581, Arduino shields GUI and firmware installation manual). 6. Open the GUI application to operate the device from the PC. For details regarding GUI operation see section 8 “GUI description”. Figure 6 shows the boards during the operation. Figure 6. The assembly PCAL6534EV-ARD daughterboard / IMXRT1050 EVK board operation UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 16 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 6.2 Using the PCAL6534EV-ARD with an LPCXpresso55S69 development board Figure 7 shows the required hardware for operation of the PCAL6534EV-ARD and LPCXpresso55S69 EVK board. This configuration consists of: • • • • One LPCXpresso55S69 EVK board One PCAL6534EV-ARD daughterboard One USB-A / USB Micro-B cable A PC with Windows 10 operating system The LPCXpresso55S69 development board is equipped with four USB Micro-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 debugging and the USB cable thus accomplishes two tasks at the same time: powering the board, and serving as a data link between the EVK board and PC. For more details regarding power-up and operation of the LPCXpresso55S69 development board, see the LPCXpresso55S69/LPCXpresso55S28 Development Board User Manual here. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 17 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 7. PCAL6534EV-ARD daughterboard and LPCXpresso55S69 motherboard, before starting The following steps describe how to assemble, program, and operate the configuration shown in Figure 7. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 18 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 1. Insert the PCAL6534EV-ARD daughter card to P16 – P19 connectors located on LPCXpresso55S69 development board (see the marked pins of P16 – P19, Figure 7); 2. Connect the development board using port P6 USB port of PC; 3. Install the LPCXpresso55S69 target firmware (download from NXP site and read the EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf instruction file); 4. Install GUI application on PC (see the instruction file called out in the previous step); 5. Open the GUI application to operate the device from the PC. For details regarding GUI operation see Section 7. Figure 8 shows the two boards in operation. Figure 8. PCAL6534EV-ARD daughterboard / LPCXpresso55S69 motherboard operation 6.3 Using the PCAL6534EV-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 and built as EVK – daughterboard interconnection. The EVK board i.MX 8M Mini LPDDR4 is not equipped with an Arduino port; instead it has a 2 x 20 pin expansion connector (J1003, see i.MX 8M Mini LPDDR4 EVK user manual). J1003 is a multipurpose port, 2 containing various digital I/O lines, including specialized I C and SPI buses. Starting from the expansion connector pin chart, an Arduino port interposer board was developed, with the role of signal-to-signal bridge between the 2 x 20 connector pins on the i.MX 8M Mini LPDDR4 EVK and the mated connectors of the Arduino port present on the PCAL6534EV-ARD daughterboard. UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 19 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board To operate the setup, along with the EVK and the daughterboard, a third board must be included in the setup assembly. Figure 9 shows the necessary boards and how these boards are connected. The configuration consists of: • • • • • • One i.MX 8M Mini LPDDR4 EVK board One PCAL6534EV-ARD daughterboard One IMX8MMINI-IARD interposer board One USB-A / USB-C cable One USB-A / USB Micro-B cable A PC with Windows 10 operating system It is recommended to attach the PCAL6534EV-ARD to the Arduino connectors of the IMX8MMINI-IARD interposer board first, and then the resulting assembly to the i.MX 8M Mini LPDDR4 EVK. This can be done by plugging J1 connector located on the interposer board to J1003 connector on the EVK. To power-up the EVK, an USB-C type cable connected to PORT 2 of the EVK is used. The power switch 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 the EVK (see Figure 9 and Figure 10). The user may find details regarding power-up and operation of the setup assembly in 8MMINILPDDR4-EVK user manual and IMX8MMINI-IARD User Manual. The files can be downloaded from www.nxp.com/. Figure 9. The assembly PCAL6534EV-ARD daughterboard, IMX8MMINI-IARD interposer board, and i.MX 8M Mini LPDDR4 EVK, before starting To configure and operate the setup, follow the below steps: 1. Insert the PCAL6534EV-ARD onto the IMX8MMINI-IARD interposer board Arduino connectors (located on the top side) 2. Attach IMXMMINI-IARD connector plug J1 (located on the bottom of the board) into J1003 expansion board located on the top side of i.MX 8M Mini LPDDR4 EVK (see Figure 9) UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 20 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 3. Power-up the EVK board using an USB Type C cable attached to PORT 2 4. Connect the EVK to the PC, using an USB Micro-B cable, attached to J901 debug port 5. Place SW101 in ON position to power-up the boards 6. Install the MIMXRT1050 target firmware (download UM11581, Arduino shields GUI and firmware installation manual from NXP site) 7. Install GUI application on the PC (see the instruction file referred in the above step) 8. Open the GUI application to operate the device from the PC. For details regarding GUI operation see Section 7 Figure 10. PCAL6534EV-ARD daughterboard / i.MX 8M Mini LPDDR4 EVK board operation 6.4 Using PCAL6534EV-ARD with another device The PCAL6534EV-ARD daughterboard can be operated with an EVK board which has an Arduino port. There are two options to connect the board: using an EVK 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 daughterboard to the EVK, to operate the board. In the second case, using the pin chart of Arduino connectors (Table 1) make the necessary electrical 2 connections (for power, I C-bus and control lines), and develop the desired firmware, assuring that is compliant with IC specifications. Use PCAL6534 datasheet to read details about internal registers of the DUT IC and data exchange between internal controller and the EVK. Assure for correct electrical connections and avoid data conflicts on the signal lines, to prevent IC damage. 7 GUI description A GUI application is available for the three EVK boards from NXP Semiconductors. The application is common for all EVKs and the development boards of the entire family of IO UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 21 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board expanders produced by NXP Semiconductors (PCAL6408A-ARD, PCAL6416AEV-ARD, PCAL6524EV-ARD, and PCAL6534EV-ARD). This section describes the GUI application and how the user can control the PCAL6534EV-ARD daughterboard from the graphical interface. First, install the GUI package and software on the PC (Windows 10). For more details, see UM11581. Once installation is complete, assure that one of the mentioned three EVKs with attached PCAL6534EV-ARD daughterboard is connected to PC and powered-on. Open NXP_(PCAL65x4,PCAL64xxA) GUI application. An interface will appear as is shown in Figure 11: The GUI application starts with Settings tab (marked with red arrow). The left side of the window displays Board settings. The section provides the following settings: • Select EVK: displays the list of EVKs. Selecting a wrong EVK board causes the connection to fail and a pop-up window with the message: “Unable to Connect with EVK” appears on the screen. • Select COM port: displays port selected for the communication. 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 10, the selected board is PCAL6534. Selecting a wrong daughterboard causes the connection to fail and a pop-up window with the message: “Unable to Connect with Daughter Card” appears on the screen. In the right side of the window is located Device setting section. The following settings are provided: 2 • I2C Frequency: displays the I C-bus clock frequency (100 kHz, 400 kHz, and 1 MHz). With the Set button the value is written in the internal register of PCAL6534 IC. • Address Selection: allows the user to select the hardware address of PCAL6534 IC. • Reset Chip: reset the internal register of PCAL6534. Assuming the correct parameters are chosen, clicking the Connect button establishes the connection with the EVK. In the bottom side of the GUI window a status bar shows in real time the status connection between PC and the EVK. Figure 11. Graphical interface at start-up (“Settings” tab activated by default) UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 22 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board In the tab bar, from left to right the first tab is CPLD. Clicking on CPLD tab, a new window appears as it is shown in Figure 12. The user can select one of three modes: • Count mode: when is activated, three additional parameters (speed, direction and counting status) can be set. For details regarding Count Mode and its additional settings see Section 4.9. Use the Write button to send the configuration to the daughterboard. The four-digit display in the upper (blue) area indicates the current value of the physical LED display (D13 to D16) located on the PCAL6534EV-ARD daughterboard. • Direct Write Mode: in this mode the user can set the value indicated by the LED display on the PCAL6534EV-ARD daughterboard. The values “Up” and “Down” can be chosen for LCD 1 (D13), while the other three digits can be set with numbers from 0 to 9. The dot for each digit can be set to be on/off individually. Clicking on Write button the values 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 new window appears (see Figure 13). In the left side of the window, the parameters of the I/O connected to on-board switches (SW1 to SW5) can be set. The parameters are: • • • • • • • Latch: enable / disable the corresponding latch of the input. Pull Up/Down Enable: enable / 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 Inversion: enable / disable the polarity inversion function for the input; Interrupt Edge: select the trigger type of the interrupt (level or edge); Interrupt Clear: clear the interrupt register; The Write button sets the internal registers of the DUT with the selected value in the GUI. The on-board switches (SW1 to SW5) does not have pull-up resistors, the user should UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 23 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board select and activate the internal pull-up resistors from the GUI. In the right side of the window, the Read button, bring back the current values of the registers on the graphical user interface. Figure 13. Graphical interface – “SWITCH” tab activated The LED tab, allows the user to control the on-board user LEDs D4 to D11. (see Figure 14). In the yellow area of the window, the parameters of the I/O connected to onboard 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 the drive strength of the output. The Write button sets the internal registers of the DUT with the selected value in the GUI. In the upper side of the window (the blue region) the LED1 to LED8 indicators displays the current state of the on-board LEDs (D4 to D11). UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 24 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 14. Graphical interface – “LED” tab activated The GPIO tab (Figure 15) is managing the remaining I/O lines of the DUT IC, which are not allocated to the on-board peripheral (LED, switch, or on-board display). The lines are the first five LSB of port P3, and are linked to connector J8 (see section 5.8 “I/O bus”). From the GPIO window, the following parameters of the I/O pins of the DUT can be configured: • • • • • • • • GPIO#: select the direction of the line (input or output). Latch: enable / disable the corresponding latch of the input. Pull Up/Down Enable: enable / 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 Inversion: enable / disable the polarity inversion function for the input; Interrupt Edge: select the trigger type of the interrupt (level or edge); Interrupt Clear: clear the interrupt register; With the Write button the configuration is written in the internal registers of the DUT IC, while the Read will bring back the data from the DUT to GUI. On the bottom of the window, a note details the GPIO allocation to the 10 BIT – I/O PORT (connector J8). UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 25 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 15. Graphical interface – “GPIO” tab activated The Debug tab (Figure 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 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 26 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Figure 16. Graphical interface – “Debug” tab activated 8 Abbreviations Table 8. Abbreviations Acronym Description CPLD Complex Programmable Logic Device DUT Device Under Test ESD Electro Static Discharge EVK Evaluation Board GUI Graphical User Interface 2 I C-bus Inter-Integrated Circuit bus IC Integrated Circuit I/O Input / Output LED Light Emitting Diode PC Personal Computer USB Universal Serial Bus UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 27 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 9 References 2 1. PCAL6534, Ultra low-voltage translating 34-bit FM+ I C-bus/SMBus I/O expander with Agile I/O features, interrupt output and reset Product data sheet; NXP Semiconductors; 2. MIMxrt1050 EVK Board Hardware User’s Guide User manual; NXP Semiconductors; 3. i.MX RT1050 Crossover Processors Data Sheet for Consumer Products Data sheet; NXP Semiconductors; 4. UM11158 – LPCXpresso55S69 Development Board User manual; NXP Semiconductors; 5. LPC556x 32-bit ARM Cortex-M33; M33 coprocessor, TrustZone, PowerQuad, CASPER, 320KB SRAM; 640 KB flash, USB HS, Flexcomm Interface, SDIO, 32-bit counter/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 User guide; NXP Semiconductors; 7. i.MX 8M Mini Application Processor Datasheet for Consumer Products Data sheet; NXP Semiconductors; 8. i.MX 8M Mini Application Processor Reference Manual Reference manual; NXP Semiconductors; 9. Arduino Uno R3 Reference Manual Reference manual; NXP Semiconductors; 10. IMX8MMINI-IARD interposer board User Manual User manual; NXP Semiconductors; 11. NXP EVK Firmware and GUI Installation Guide for Arduino Series Boards User manual; NXP Semiconductors; UM11712 User manual All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 28 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board 10 Legal information 10.1 Definitions Draft — A draft status on a document indicates that the content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included in a draft version of a document and shall have no liability for the consequences of use of such information. 10.2 Disclaimers Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors and its suppliers accept no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer 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 application or use by customer’s third party customer(s). NXP does not accept any liability in this respect. UM11712 User manual Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Evaluation products — This product is provided on an “as is” and “with all faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates and their suppliers expressly disclaim all warranties, whether express, implied or statutory, including but not limited to the implied warranties of noninfringement, merchantability and fitness for a particular purpose. The entire risk as to the quality, or arising out of the use or performance, of this product remains with customer. In no event shall NXP Semiconductors, its affiliates or their suppliers be liable to customer for any special, indirect, consequential, punitive or incidental damages (including without limitation damages for loss of business, business interruption, loss of use, loss of data or information, and the like) arising out the use of or inability to use the product, whether or not based on tort (including negligence), strict liability, breach of contract, breach of warranty or any other theory, even if advised of the possibility of such damages. Notwithstanding any damages that customer might incur for any reason whatsoever (including without limitation, all damages referenced above and all direct or general damages), the entire liability of NXP Semiconductors, its affiliates and their suppliers and customer’s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars (US$5.00). The foregoing limitations, exclusions and disclaimers shall apply to the maximum extent permitted by applicable law, even if any remedy fails of its essential purpose. Translations — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. Security — Customer understands that all NXP products may be subject to unidentified vulnerabilities or may support established security standards or specifications with known limitations. Customer is responsible for the design and operation of its applications and products throughout their lifecycles to reduce the effect of these vulnerabilities on customer’s applications and products. Customer’s responsibility also extends to other open and/or proprietary technologies supported by NXP products for use in customer’s applications. NXP accepts no liability for any vulnerability. Customer should regularly check security updates from NXP and follow up appropriately. Customer shall select products with security features that best meet rules, regulations, and standards of the intended application and make the ultimate design decisions regarding its products and is solely responsible for compliance with all legal, regulatory, and security related requirements concerning its products, regardless of any information or support that may be provided by NXP. NXP has a Product Security Incident Response Team (PSIRT) (reachable at PSIRT@nxp.com) that manages the investigation, reporting, and solution release to security vulnerabilities of NXP products. 10.3 Trademarks Notice: All referenced brands, product names, service names, and trademarks are the property of their respective owners. NXP — wordmark and logo are trademarks of NXP B.V. All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 29 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Tables Tab. 1. Tab. 2. Tab. 3. Tab. 4. The pin chart of Arduino connectors and their usage ........................................................ 7 The I/O allocation table ..................................... 9 CPLD control bus ............................................11 MAX V data bus ..............................................11 Tab. 5. Tab. 6. Tab. 7. Tab. 8. MAX_CTRL_# control lines ............................. 12 PCAL6534EV-ARD jumpers ............................13 PCAL6534EV-ARD test points ........................ 14 Abbreviations ...................................................27 Fig. 9. The assembly PCAL6534EV-ARD daughterboard, IMX8MMINI-IARD interposer board, and i.MX 8M Mini LPDDR4 EVK, before starting .........................20 PCAL6534EV-ARD daughterboard / i.MX 8M Mini LPDDR4 EVK board operation .......... 21 Graphical interface at start-up (“Settings” tab activated by default) ..................................22 Graphical interface – “CPLD” tab activated ..... 23 Graphical interface – “SWITCH” tab activated .......................................................... 24 Graphical interface – “LED” tab activated ........25 Graphical interface – “GPIO” tab activated ......26 Graphical interface – “Debug” tab activated .... 27 Figures Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Fig. 6. Fig. 7. Fig. 8. The PCAL6534EV-ARD board picture, top view (up) and bottom view (down) .................... 6 PCAL6534EV-ARD block diagram .................... 7 PCAL6534EV-ARD on-board LED display ...... 13 PCAL6534EV-ARD Jumper locations ............. 14 PCAL6534EV-ARD daughterboard and IMXRT1050 EVK board, before starting .......... 16 The assembly PCAL6534EV-ARD daughterboard / IMXRT1050 EVK board operation ..........................................................16 PCAL6534EV-ARD daughterboard and LPCXpresso55S69 motherboard, before starting .............................................................18 PCAL6534EV-ARD daughterboard / LPCXpresso55S69 motherboard operation .....19 UM11712 User manual Fig. 10. Fig. 11. Fig. 12. Fig. 13. Fig. 14. Fig. 15. Fig. 16. All information provided in this document is subject to legal disclaimers. Rev. 1.0 — 31 January 2022 © NXP B.V. 2022. All rights reserved. 30 / 31 UM11712 NXP Semiconductors PCAL6534EV-ARD evaluation board Contents 1 2 2.1 3 3.1 3.2 3.3 3.4 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.9.1 4.9.2 4.9.3 4.10 5 6 6.1 6.2 6.3 6.4 7 8 9 10 Introduction ......................................................... 4 Finding kit resources and information on the NXP web site ................................................ 4 Collaborate in the NXP community ....................4 Getting ready .......................................................4 Kit contents ........................................................4 Assumptions ...................................................... 5 Static handling requirements ............................. 5 Minimum system requirements ..........................5 Getting to know the hardware ........................... 5 PCAL6534EV-ARD features .............................. 5 Kit featured components ....................................5 Block diagram ....................................................6 Schematic diagram ............................................ 7 Arduino port ....................................................... 7 I2C-bus .............................................................. 8 Control bus ........................................................ 9 I/O bus ............................................................... 9 CPLD ............................................................... 10 Direct write .......................................................11 Count mode ..................................................... 12 Idle mode .........................................................12 Jumpers and test points .................................. 13 Installing and configuring software tools ....... 14 Configuring the hardware ................................ 15 Using the PCAL6534EV-ARD with an IMXRT1050 EVK board ................................... 15 Using the PCAL6534EV-ARD with an LPCXpresso55S69 development board ...........17 Using the PCAL6534EV-ARD with an i.MX 8M Mini LPDDR4 EVK board .......................... 19 Using PCAL6534EV-ARD with another device ...............................................................21 GUI description ................................................. 21 Abbreviations .................................................... 27 References ......................................................... 28 Legal information .............................................. 29 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section 'Legal information'. © NXP B.V. 2022. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 31 January 2022 Document identifier: UM11712