CY8CKIT-017 Cypress Semiconductor Corp, CY8CKIT-017 Datasheet - Page 21

• Manufacturer Part Number: CY8CKIT-017
• Description: KIT DEV CAN/LIN EXPANSION BOARD
• Manufacturer: Cypress Semiconductor Corp
• Series: -r

Specifications of CY8CKIT-017

• Accessory Type: Expansion Module
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: CY8CKIT-001, CY8CKIT-030, CY3280-22X45
• Other names: 428-3108

4.3.3
4.3.4
4.4
CY8CKIT-017 CAN/LIN Expansion Board Kit Guide, Doc. # 001-57814 Rev. *B
Using the LIN Transceiver NWAKE Pins
Both TJA1020 LIN transceiver devices have an NWAKE input that can be used to wake up a
sleeping LIN bus without interaction from the PSoC LIN controller. If the NWAKE input needs to be
used for either LIN circuit, the signal can be accessed using the test points on the board labeled with
"NWAKE1" and "NWAKE2", respectively.
LIN Master and Slave Configurations
By default, the LIN1 circuit has a LIN master configuration and the LIN2 circuit has a LIN slave
configuration.
master or slave configuration. The components can be replaced as shown by
the circuit from a master to slave or vice versa.
Table 4-3. Configurations
Indicator LEDs
There are three indicator LEDs on the Expansion Board. One is red, one is amber, and one is green.
The LEDs are active-low, and they must each be driven with a sink current of approximately 2 mA to
turn them on.
All three LEDs can be completely isolated from the rest of the CY8CKIT-001 development kit by
removing resistor R2, which is a 0 resistor. This is useful if the LEDs are not needed, but other
circuits on the EBK are. In this case, isolating the LEDs ensures that they do not interfere with any
other circuits that share the same pins.
LIN1 (master)
LIN2 (slave)
Circuit
Table 4-3
shows how footprints in each circuit are populated by default to make a
D7 is PMLL4148L
D8 is not populated
Diode
R27 is 1 k
R28 is not populated
Resistor
C8 is 1 nF
C9 is 220 pF
Table 4-3
Capacitor
to change
Hardware
21