Specifications
Platform Specific Hardware Configuration
Low-Noise Amplifier High-Gain Mode (HGM) => Radio Transceiver GPIO- 3:
The LNA located on the PAN4561 module supports a high-gain mode. This can be enabled or disabled
by using GPIO-3 of the MC1321x’s radio transceiver.
HGMState GPIO‐3
Enabled High
Disabled Low
This GPIO pin can be read and/or controlled by using SNAP’s peekRadio() and pokeRadio() built-in
functions. This pin is driven high during the startup process when SNAP Feature Bit 5 (0x20) is set.
Refer to the reference manual for the MC1321x and PAN4561 for details regarding memory locations
and pin behavior.
Power Amplifier Enable/Disable (PA_EN)
The Power Amplifier located on the PAN 4561 module can be enabled or disabled by manipulating
external pin 52. Setting this pin high will enable the Power Amplifier.
PAState Pin52
Enabled High
Disabled Low
NOTE: When the PAN4561 is mounted onto a SNAP Engine carrier board, pin 52 and pin 45
(SNAPpy Raw IO 20/ PTC4) are connected together. This allows the PA to be enabled/disabled by
manipulating SNAPpy IO 20 (PTC4). This pin is driven high during the startup process when SNAP
Feature Bit 5 (0x20) is set.
Timers
Normally the PAN4561 uses timer 2 in the hardware for its system clock. Feature bit 0x40 of NV
Parameter 11 can be set to instruct SNAP to use timer 1 instead. This affects the availability of PWM
on associated pins. Refer to the Freescale documentation for details on how to make use of this.
ADC Pins
8 ADC (Analog-to-Digital) pins are available for use on the PAN 4561. This is like the Synapse
RF100 SNAP Engines, but dislike the PAN4555 that only brings out 4 ADC pins.
Low Power Settings (LNA/PA)
The PAN4561 module includes a Low-Noise Amplifier (for receiving) and Power Amplifier (for
transmitting). This power amplifier needs to be placed in a disabled mode in order for the entire
module to reach low power operation. The SNAP core will disable the PA during the sleep process
and will re-enable once the system has emerged from sleep. The user does not need to take any action.
SNAP Reference Manual Document Number 600-0007K Page 137 of 202