EV-GM-00-1.0 SkyeTek, EV-GM-00-1.0 Datasheet - Page 18

• Manufacturer Part Number: EV-GM-00-1.0
• Description: RF Development Tools Gemini Eval Kit ISO14443, ISO18094
• Manufacturer: SkyeTek
• Type: RF Readersr

Specifications of EV-GM-00-1.0

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: ISO14443, ISO18092
• Frequency: 13.56 MHz
• Operating Supply Voltage: 5 V
• Description/function: Evaluation kit for SkyeModule Gemini NFC OEM reader module
• Interface Type: I2C, Serial, SPI, USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 20 C
• For Use With: ISO14443, ISO18092

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SkyeModule Gemini Datasheet
6.3
The SkyeModule Gemini can be configured to use either an external or internal antenna. The standard
configuration on the SM-GM-00 connects the internal antenna with jumper resistors R20 and R21, which
bypass J2. This is the typical configuration for the Gemini. The SM-GM-MH comes with R20 and R21
unpopulated and header pins soldered to J2. This allows the user to select the internal antenna with
jumpers across pins 1-4 and 3-5 below or to connect an external antenna with pins 1, 2, and 3 of J2.
More information on how to connect an antenna can be found in Chapter 12, SkyeModule Gemini
Antenna Options.
The antenna connector numbering and description is illustrated below:
External Antenna Connector Pin Mapping
Pin
1
2
3
4
5
Shield
4
1
Table 6-3: External Antenna Pin Descriptions
Figure 6-2: External Antenna Pin Numbering
J2
Name
TX1
GND
TX2
INT_TX1
INT_TX2
2
5
3
Top of Board
Description
Transceiver output 1
Ground for transceiver output
Transceiver output 2
Internal antenna connection for TX1
Internal antenna connection for TX2
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