Data Sheet

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WGM160P pin description
silabs.com | Building a more connected world. Rev. 0.1 | 5
For WGM160P applications requiring Ethernet, a 50MHz reference clock is required. This can be achieved either by connecting 50MHz
external clock to module pin PB13 or by connecting a 50MHz crystal oscillator between pins PB13 (HFXTAL_P) and PB14 (HFXTAL_N).
As shown below, insert Table 4.13 High Frequency Crystal Oscillator of EFM32GG11 datasheet
Table 3.4 WGM160P 50MHz High Frequency Crystal Oscillator
3.6 PTA pins
In case a RF transceiver using the same 2.4 GHz band (e.g. Bluetooth) is located next to WGM160P, Packet Transfer Arbitration (PTA)
interface can be used to avoid mutual interference. In this case, PTA pins are connected to the other transceiver. PTA interface is highly
programmable and can use 1, 2, 3, or 4 pins upon configuration. Depending on manufacturer, PTA signal names can vary so the table
below shows the alternative naming.
Table 3.5 WGM160P PTA Configuration
WGM160P
Pin #
WGM160P Pin name
Alternative naming
6
PTA_TX_CONF
GRANT
7
PTA_RF_ACT
REQUEST
13
PTA_STATUS
PRIORITY
12
PTA_FREQ
RHO
PTA interface configuration is achieved through software configuration. PTA operation will be detailed in an upcoming application note.