NXP Semiconductors
UM11826
FRDMDUALK3664EVB evaluation board
Device mode EN pin VIO pin Comment
Normal
1
1
The MC33664 operates as a full transceiver. MCU messages
transmitted on the SPI_TX emerge on the SPI_RX for the
MCU to read.
Sleep
0
1
In Sleep mode, the transceiver activates the INTB pin when
a valid wake
‑
up sequence is detected. The INTB pin remains
LOW until the rising edge of the EN pin places the device in
Normal mode.
Table 3. Modes of operation
6.2.2 Connectors
shows the location of connectors on the board.
Figure 4. Evaluation board connector locations
6.2.2.1 TPL bus connectors
The connectors J1 and J2 provide access to TPL1 and TPL2 bus.
Schematic label
Signal name
Description
J1-1
TPL1RDTXP
TPL bus 1 – receive/transmit input positive
J1-2
TPL1RDTXN
TPL bus 1 – receive/transmit input negative
Table 4. TPL bus 1 connector J1
Schematic label
Signal name
Description
J2-1
TPL2RDTXP
TPL bus 2 – receive/transmit input positive
J2-2
TPL2RDTXN
TPL bus 2 – receive/transmit input negative
Table 5. TPL bus 2 connector J2
UM11826
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User manual
Rev. 1 — 6 September 2022
8 / 17
