Datasheet

SHUNT
POSITION
U1-1 (SPI/I2C)
CONNECTED TO
OPERATING
MODE
Not installed*
+3.3V
(through resistor R11)
SPI
Installed GND I
2
C
SHUNT
POSITION
U12-1 (IN) CONNECTED TO
SPI/I2C HEADER, PIN 5 (CSN)
CONNECTED TO
CSN SERVING
1-2* +3.3V
U1, pin 5 (CS/A0)
(through jumper JU19)
UART
2-3 GND
U4–U7, pin 6 (CS)
IO links
Not installed
SPI/I2C header, pin 11 (CSN_SEL)
CSN connection selected by
CSN_SEL
Determined by CSN_SEL
JUMPER* SIGNAL/POWER LED
JU3 IOLINK0 C/Q D5
JU4 IOLINK0 DI D6
JU5 IOLINK1 C/Q D7
JU6 IOLINK1 DI D8
JU7 IOLINK2 C/Q D9
JU8 IOLINK2 DI D10
JU9 IOLINK3 C/Q D11
JU10 IOLINK3 DI D12
SHUNT
POSITION
U2-4 AND U3-4 (INA)
CONNECTED TO
OUTPUT
INTERFACE
Not installed*
GND
(through resistor R12)
IO link
Installed +3.3V RS-485/RS-232
MAX14830 Evaluation Kit
Evaluates: MAX14830
4
Detailed Description of Hardware
The MAX14830 EV kit provides a proven design to
evaluate the MAX14830 IC. The IC is an advanced quad-
channel UART with each UART containing 128 words of
receive and transmit FIFO buffer that can be controlled
through SPI or I
2
C. Each of the four UARTs is selected
through SPI or I
2
C in-band addressing.
Each of the four UARTs can interface with an IO-Link
master transceiver or an RS-485/RS-232 multiprotocol
transceiver. The EV kit contains four on-board IO-Link
master transceivers, four RS-485/RS-232 multiprotocol
transceivers, and 8-channel DPDT switches to select
between the IO link and RS-485/RS-232 transceivers.
Jumper Selection
SPI/I
2
C Operating Mode (SPI/I2C)
Jumper JU1 selects the IC’s operating mode. The operat-
ing mode is selectable between SPI and I
2
C. See Table
2 for JU1 shunt positions.
IO Link and RS-485/RS-232
Output Interface Selection (INA)
Jumper JU2 selects the IC’s output interface. The output
interface is selectable between the IO link and RS-485/
RS-232 transceivers. See Table 3 for JU2 shunt positions.
IO-Link Signal Indicators ((C/Q)/(DI))
Jumpers JU3–JU10 connect or disconnect the IO-Link
signal (C/Q)/(DI) from their respective LED indicators.
Install shunts to connect or remove shunts to disconnect
the IO-Link signal from their respective LED indicators.
Table 4 lists the correspondence between jumpers
JU3–JU10 to their respective IO-Link signal and LED
indicators.
UART and IO-Link
Chip-Select Signal (CSN)
Jumper JU11 selects the destination for the CSN (chip-
select signal on the SPI/I2C header, pin 5). The CSN
chip-select signal can be set to serve either the UART
(MAX14830) or the four IO links (MAX14824) using JU11.
See Table 5 for JU11 shunt positions.
*Default position.
*Default position.
*Install shunts to connect or remove (default) shunts to
disconnect from LED.
*Default position.
Table 2. JU1 Jumper Selection (SPI/I2C)
Table 5. JU11 Jumper Selection (CSN)
Table 4. JU3–JU10 Jumper Legend (LEDs)
Table 3. JU2 Jumper Selection (INA)