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3.3.1 Signal Description
Table 3-3-1. Signal Descriptions
Label
Pin I/O
VCC
61
26
GND
41
63
RESET
24
MSEL
25
NET-
29
LED
XM8200S-E00-100
XM8200S Designer's Guide
I/O Type
Signal Name/Description
+5 VDC. A standard 5V +/- 5% - 0.5 A power supply is
strictly required to supply this module (5V Versions).
Chapter 4 should be considered.
I
PWR
+3.-3 VDC. A standard 3.3V – 0.5 A power supply is
strictly required to supply this module (3V Versions).
Chapter 4 should be considered.
Digital Ground Connect to Digital Ground on the
I
GND
interface circuit.
Module Reset. The active low RESET input resets the
modules logic and returns the module to the original factory
default values and to "stored values" in NVRAM. RESET is
connected to a built-in reset circuit on the Socket Modem.
Reset must be held low for at least 5mS to activate the reset
logic. The modem is ready to use 200mS after the reset.
I
IC
Connect the reset line to ground through a 1nF capacitor to
ensure good ESD immunity and to comply with ESD tests
according to EN 61000-4-2.
This signal is active low (on the module is a pull-up
resistor of 47K).
I
IC
MSEL Signal. Not used currently. Leave open.
NET-LED Signal: The Wi-Fi output signal indicates when
the module is transmitting over the WLAN network. This
signal follows the WLAN transmit bursts. This signal is set
high during transmission burst, and set low when no
O
OC
transmission is in progress.
LED driver lines are open-drain inverter-driven (74HCT05)
lines.
xmodus swiss GmbH
Seite 11 / 22
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