101-1173 Rabbit Semiconductor, 101-1173 Datasheet - Page 119
101-1173
Manufacturer Part Number
101-1173
Description
RCM4400W DEV KIT UNIVERSAL
Manufacturer
Rabbit Semiconductor
Series
RCM4400W RabbitCore™r
Type
Wi-Fi / 802.11.br
Datasheet
1.20-101-1202.pdf
(126 pages)
Specifications of 101-1173
Frequency
2.4GHz
Wireless Frequency
58.98 MHz
For Use With/related Products
RCM4400W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1133
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C.1.3 Reset Generator
The RCM4400W uses a reset generator to reset the Rabbit 4000 microprocessor when the
voltage drops below the voltage necessary for reliable operation. The reset occurs between
2.85 V and 3.00 V, typically 2.93 V.
The RCM4400W has a reset output, pin 3 on header J1.
C.1.4 Onboard Power Supplies
The +3.3 V supplied to the RCM4400W via header J1 powers most of the onboard circuits.
In addition, there is a +1.8 V DC linear regulator that provides the core voltage to the Rabbit
4000 microprocessor. Other linear regulators supply the additional voltage levels needed by
the Wi-Fi circuits. A /DISABLE line from the Rabbit 4000 can be used to disable the Wi-Fi
linear regulators, essentially turning off the Wi-Fi circuits. The
program in the
OEM User’s Manual
SAMPLES\RCM4400W\TCPIP\
Figure C-3. RCM4400W Onboard Power Supplies
+2.90 V DC
+2.80 V DC
+2.50 V DC
+1.2 V DC
Voltage
Power Supply Use
FPGA VCCAUX
FPGA VCCINT
VDD_XCVR
folder demonstrates this functionality.
VDD_VCO
VDD_PA
POWERDOWN.C
sample
113
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