SI5040-EVB Silicon Laboratories Inc, SI5040-EVB Datasheet - Page 3

• Manufacturer Part Number: SI5040-EVB
• Description: BOARD EVAL SI5040
• Manufacturer: Silicon Laboratories Inc

Specifications of SI5040-EVB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1. Functional Description
The Si5040-EVB and software allow for a complete and
simple evaluation of the functions, features, and
performance of the Si5040 transceiver.
1.1. Input Power
This evaluation board requires three power inputs,
+1.8 V, +3.3 V, and V
ground connection. J8 and J9 are used for connecting
power to the EVB (see Figure 1).
1.2. LEDs
Three LEDs indicate that power has been properly
applied to the EVB. These are +3.3 V, V
+1.8 V. Since these LEDs are driven by the MCU (not
the power itself), the V
function unless +3.3 V is first applied to the EVB (see
Figure 1).
The 3.3 V LED will be on solid when the 3.3 V input is
within the 2.97 to 3.63 V range. The 1.8 V LED will be
on solid when the 1.8 V at the Si5040 V
the 1.62 to 1.89 V range.
The V
is between 1.89 and 3.63 V. The V
and off when this voltage is between 1.62 and 1.89 V.
The REF ON LED indicates that the Si534 clock
reference chip is powered up and applying a clock
signal to the Si5040. JP16 must be set to the ON
position in order to power up the Si534.
INTRPT
RXLOS
SPSEL
RXLOL
VDDIO
3.3 V
1.8 V
LED
REF
USB
ON
DDIO
Table 1. LED Status and Description
FLASHING
LED will be on solid when this input voltage
Status
ON
ON
ON
ON
ON
ON
ON
ON
ON
DDIO
DDIO
When 3.3 V supply is between
2.97 and 3.63 V.
When Si5040 V
between 1.62 and 1.89 V.
When Si5040 V
between 1.89 and 3.63 V.
When Si5040 V
between 1.62 and 1.89 V.
When the Reference clock
source Si534 is powered up.
Flashes when USB Access is
occurring.
When the Si5040 SPSEL pin is
high.
When the Si5040 INTRPT pin
is high.
When the Si5040 RXLOS pin
is high.
When the Si5040 RXLOL pin is
high.
(1.8 V or 3.3 V), as well as a
and +1.8 V LEDs will not
Description
DDIO
LED will flash on
DD
DD
DDIO
DDIO
pins are
pins is within
pin is
pin is
DDIO
, and
Rev. 0.4
Since the 1.8 V LED indicates the voltage at the Si5040
V
LED to function and for the Si5040 to receive its core
supply voltage. However, the V
without the jumper on JP13.
1.3. Jumpers and Headers
For the EVB to function, there are five jumpers that
must be installed.
There must be jumpers on JP12 and JP13 because
they apply power to the Si5040 (see Figure 2). The next
three required jumpers are three positions on J17,
labeled SS, SD, and SCK on one side and SS_U,
SD_U, and SCK_U on the other side (see Figure 3).
Connecting jumpers between SS to SS_U, SD to SD_U,
and SCK to SCK_U enables the onboard MCU to
communicate with the Si5040 using the 3-wire serial
interface.
DD
pins, the jumper, JP12, must be in place for this
Figure 2. JP12 and JP13
Figure 1. LED
Figure 3. J17
Si5040-EVB
DDIO
LED will function
3