4.4 PTA Connector
The WFM200S' packet transfer arbitration (PTA) interface for managing coexistence in a multi-transceiver application is exposed on a
1x5-pin 0.1" pitch header on the WFM200S Wi-Fi Expansion Kit.
The pinout of the connector is illustrated in the figure below.
PTA_STATUS / PRIORITY
PTA_RF_ACT / REQUEST
4
5
3
2
1
PTA_FREQ / RHO
PTA_TX_CONF / GRANT
GND
Figure 4.5. PTA Connector
4.4.1 PTA Connector Pinout
The pin assignment of the PTA connector on the board is given in the table below.
Table 4.4. PTA Connector Pin Descriptions
Pin Number
WFM200S Connection
1
PTA_RF_ACT / REQUEST
2
PTA_TX_CONF / GRANT
3
PTA_FREQ / RHO
4
PTA_STATUS / PRIORITY
5
GND
4.5 Secondary RF Connector
The WFM200S' secondary RF output is exposed on the WFM200S Wi-Fi Expansion Kit through a Hirose u.FL coaxial connector.
For connecting the secondary RF output to an RF measurement instrument, 50 ohms resistor R641 shall be removed and a u.FL to
SMA adapter cable (not included with the kit) can be used. Examples of such adapter cables are the Taoglas CAB.721 (100 mm) or
CAB.720 (200 mm) cable assemblies.
UG407: WFM200S Wi-Fi
®
Expansion Kit User's Guide
Connectors
silabs.com
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