Datasheet

MAX9259 Evaluation Kit
Evaluates: MAX9259
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SW122 resets the USB baud rate to 921600 baud. The
software GUI automatically sends the baud-rate change
command.
Firmware command “T” supports waking up the MAX9259
from the MAX9260 side of the link. Command “T” per-
forms a dummy read, followed by a delay on the order
of 1ms to 8ms, and finally writes a register value. For
example, send “T810558800483” to read from device
address 0x81 register 0x05, delay 4ms, then write to
device address 0x80 register 0x04 data 0x83. This is
the MAX9259 wake up sequence for the default device
addresses. The software GUI automatically sends this
command when the Wake Up MAX9259 button is
pressed.
Table 1. MAX9259 EV Kit Jumper Descriptions
JUMPER SIGNAL SHUNT POSITION DESCRIPTION
JU1 CDS
1-2 CDS = high; optional peripheral attached to MAX9259
2-3* CDS = low; ECU attached to MAX9259; connect USB to MAX9259 EV kit
Open Reserved
SW1 MS
1-2
(toggle switch up)
MS = high; full-duplex bypass mode; device registers not accessible
2-3
(toggle switch down)
MS = low; half-duplex base mode; required when writing to device registers
or when using an external I
2
C peripheral
JU2 BWS
1-2* BWS = high
2-3 BWS = low
JU3 ES
1-2* ES = high
2-3 ES = low
JU4 DRS
1-2* DRS = high
2-3 DRS = low
JU5 SSEN
1-2* SSEN = high
2-3 SSEN = low
JU6
PWDN
1-2*
PWDN = high
2-3
PWDN = low
JU7
AUTOS
1-2*
AUTOS = high
2-3
AUTOS = low
JU8
H1 odd
pins
Open* H1 odd-numbered pins connect to GND through R13
1-2 H1 odd-numbered pins connect to IOVDD; R13 must be open
2-3 H1 odd-numbered pins connect to GND
JU9
Bus
power
1-2* J1 pin 1, J4 pin 1, and J5 pin 1 connect to VIN
2-3 J1 pin 1, J4 pin 1, and J5 pin 1 connect to GND
Open J1 pin 1, J4 pin 1, and J5 pin 1 not connected
JU10
Bus
power
1-2* J1 pin 1, J4 pin 1, and J5 pin 1 connect to USB 5V
Open USB power is not connected to link cable power