5

PIN

NAME

TYPE

FUNCTION

33

FLTCAP0P

Analog Out

Dedicated external filter capacitor #0.

34

FLTCAP0N

35

AVDD18

Supply

+1.8V DC Supply Voltage for analog circuits.

36

AVDD18

Supply

+1.8V DC Supply Voltage for analog circuits.

37

FLTCAP1P

Analog Out

Dedicated external filter capacitor #1.

38

FLTCAP1N

39

FLTCAP2P

Analog Out

Dedicated external filter capacitor #2.

40

FLTCAP2N

41

AVDD18

Supply

+1.8V DC Supply Voltage for analog circuits.

42

AVDD18

Supply

+1.8V DC Supply Voltage for analog circuits.

43

FLTCAP3P

Analog Out

Dedicated external filter capacitor #3.

44

FLTCAP3N

45

XTALI

Analog In

20 MHz clock reference from crystal or resonator.

46

XTALO

Analog Out

47

AVDD18

Supply

+1.8V DC Supply Voltage for analog circuits.

48

DVDD18

Supply

+1.8V DC Supply Voltage for digital circuits.

49

RESETN

Digital In

Reset when "Low". Has internal pullup to DVDD33.

50

WDTEN

Digital In

Watch Dog Timer Enable. WDTEN enabled when high. Has

internal pullup to DVDD33. See applications schematic for

further details.

51

SCLK

Digital In

SPI clock. Has internal pulldown to GND.

52

SSN

Digital In

SPI slave select enabled "Low". Has internal pullup to DVDD33.

53

SDI

Digital In

SPI slave data input to RFPAL. Has internal pulldown to GND.

54

SDO

Digital Out

SPI slave data output from RFPAL. Three-state. DVDD33 logic.

55

DVDD18

Supply

+1.8V DC Supply Voltage for digital circuits.

56

TXENB

Digital In

Reserved

Transmit Enable. Do not connect. Reserved for future use.

Has internal pullup to DVDD33. See applications schematic for

further details.

57

STATO

Digital Out

General purpose Status Output as defined in Firmware Release

Notes. Open-drain output with internal pullup to DVDD33.

58

DVDD33

Supply

+3.3V DC Supply Voltage for digital circuits.

59

DVDD18

Supply

+1.8V DC Supply Voltage for digital circuits.

60

TESTSEL0

Digital In

Test Select 0. Required for FW upgrades. Has internal pulldown

to GND. See applications schematic for further details.

61

TESTSEL1

Digital In

Reserved

Do not connect. Reserved for internal use.

Has internal pulldown to GND.

62

TESTSEL2

Digital In

Reserved

Do not connect. Reserved for internal use.

Has internal pulldown to GND.

63

RESERVED8

Digital In

Reserved

Do not connect. Reserved for internal use.

Has internal pulldown to GND.

64

DVDD18

Supply

+1.8V DC Supply Voltage for digital circuits.

65

GNDPAD

Supply

Common Ground for entire integrated circuit. Also provides path

for thermal dissipation.