Board features
The main features of RD33775ACNCEVB are:
• CAN or CAN FD communication up to 5 Mbit/s to MC33665A
• Onboard CAN transceiver TJA1443
• Configurable CAN communication and CAN FD arbitration speeds using population variant of resistors for CFG0 and CFG1 pins
• Configurable CAN ID (ID0_STB_OD, ID1, ID2, and ID3) for MC33665A using population variant of resistors
• Four MC33775A battery cell controllers
• Voltage monitoring and passive cell balancing functionality for 56 cells (emulator or relevant)
• Capacitive isolation for daisy chain communication of onboard MC33775A devices
• Transformer isolation for offboard daisy chain communication and from TPL port 0 of MC33665A to MC33775A
• Flexible loopback configuration for single chain or two independent daisy chains without loopback

Board description
The RD33775ACNCEVB is the reference design for CCMU which can communicate directly with CAN or CAN FD.
Figure 2 shows the sections for the gateway IC MC33665A and four MC33775A battery cell controllers. MC33665A and TJA1443 CAN transceiver interface circuit is part of the low-voltage section which can be connected to 12 V and ground. It can communicate on low voltage (< 16 V) with standard tools and control units with J25 connector. TPL port 0 of MC33665A is interfaced to the first MC33775A onboard with transformer isolation. TPL port 1 of MC33665A is interfaced to J2 for offboard communication with battery cell controllers or to support the loopback for battery cell controller (BCC) devices on daisy chain port 0.
Contact NXP engineering team for using TPL_AUTOWAKE function of MC33665A in RD33775ACNCEVB.