AX−SIP−SFEU, AX−SIP−SFEU−API

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3

Table 1. PIN FUNCTION DESCRIPTIONS

Symbol

Pin(s)

Type

Description

GND

1

P

Ground

GND

2

P

Ground

ANT

3

A

Single−ended 50 W antenna input/output

GND

4

P

Ground

NC

5

N

Do not connect

GND

6

P

Ground

NC

7

N

Do not connect

NC

8

N

Do not connect

NC

9

N

Do not connect

GPIO11

10

I/O/PU

General purpose IO

GPIO10

11

I/O/PU

General purpose IO

GPIO8

12

I/O/PU

General purpose IO

GPIO7

13

I/O/PU

General purpose IO, selectable SPI functionality (MISO)

GPIO6

14

I/O/PU

General purpose IO, selectable SPI functionality (MOSI)

GPIO5

15

I/O/PU

General purpose IO, selectable SPI functionality (SCK)

GPIO4

16

I/O/PU

General purpose IO, selectable SD DAC functionality, selectable clock functionality

CPU_LED

17

O

CPU activity indicator

RADIO_LED

18

O

Radio activity indicator

GPIO9

19

I/O/PU

General purpose IO, wakeup from deep sleep

UARTTX

20

O

UART transmit

UARTRX

21

I/PU

UART receive

RX_LED/

DBG_DATA

22

O

I/O

Receive activity indicator in AX−SIP−SFEU.

Debugger data line in AX−SIP−SFEU−API.

TX_LED/

DBG_CLK

23

O

I

Transmit activity indicator in AX−SIP−SFEU.

Debugger clock line in AX−SIP−SFEU−API.

NC/

DBG_EN

24

PD

PD

Do not connect in AX−SIP−SFEU.

Debugger enable line in AX−SIP−SFEU−API.

RESET_N

25

I/PU

Optional reset pin. Internal pull−up resistor is permanently enabled, nevertheless

it is recommended to connect this pin to VDD_IO if it is not used.

GND

26

P

Ground

VDD_IO

27

P

Unregulated power supply

GPIO0

28

I/O/A/PU

General purpose IO, selectable ADC functionality, selectable SD DAC functionality,

selectable clock functionality

GPIO1

29

I/O/A/PU

General purpose IO, selectable ADC functionality

GPIO2

30

I/O/A/PU

General purpose IO, selectable ADC functionality

NC

31

N

Do not connect

NC

32

N

Do not connect

GPIO3

33

I/O/A/PU

General purpose IO, selectable ADC functionality

GPIO12

34

I/O/A/PU

General purpose IO, selectable ADC functionality

GPIO13

35

I/O/A/PU

General purpose IO, selectable ADC functionality

GPIO14

36

I/O/PU

General purpose IO

NC

37

N

Do not connect

NC

38

N

Do not connect

GND

Center pads

P

Ground on 6 center pads of SIP38, must be connected