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LEON-G100/G200 - System Integration Manual

GSM.G1-HW-09002-C Preliminary System description

Page 13 of 75

Function

Pin

No

I/O

Description

Remarks

Audio pin: see section 1.9.1

MIC_GND2

42

I

Second microphone

analog reference

Local ground of second microphone. Audio pin:

see section 1.9.1

MIC_GND1

43

I

First microphone analog

reference

Local ground of the first microphone. Audio pin:

see section 1.9.1

MIC_BIAS1

44

I

First microphone analog

bias

Single ended supply output and signal input for

first microphone. Used in handset or in hands free

mode. Audio pin: see section 1.9.1

SIM

SIM_CLK

32

O

SIM clock

SIM interface: see section 1.10. Must meet SIM

specifications

SIM_IO

33

I/O

SIM data

SIM interface: see section 1.10. Must meet SIM

specifications

SIM_RST

34

O

SIM reset

SIM interface: see section 1.10. Must meet SIM

specifications

UART

DSR

9

O

UART data set ready

See section 1.11.1. Control convention of the pins

RI

10

O

UART ring indicator

See section 1.11.1. Control convention of the pins

DCD

11

O

UART data carrier detect

See section 1.11.1. Control convention of the pins

DTR

12

I

UART data terminal

ready

See section 1.11.1. Control convention of the pins

RTS

13

I

UART ready to send

See section 1.11.1. Control convention of the pins

CTS

14

O

UART clear to send

See section 1.11.1. Control convention of the pins

TxD

15

I

UART transmitted data

See section 1.11.1. Control convention of the pins

RxD

16

O

UART received data

See section 1.11.1. Control convention of the pins

DDC

SCL

30

O

I2C bus clock line

Fixed open drain. External pull-up required.

See section 1.11.2

SDA

31

I/O

I2C bus data line

Fixed open drain. External pull-up required.

See section 1.11.2

ADC

ADC1

(LEON-G100)

5

I

ADC input

Resolution: 12 bits. See section 1.12; consider that

the impedance of this input changes depending

on the operative mode

GPIO

GPIO1

20

I/O

GPIO

See section 1.13. Add a test point to provide

access to the pin for debugging.

GPIO2

21

I/O

GPIO

See section 1.13

System

PWR_ON

19

I

Power-on input

PWR_ON pin has high input impedance.

Do not keep floating in noisy environment:

external pull-up required.

See section 1.6.1

RESET_N

22

I

External reset input

See section 1.6.3

Reserved

Reserved

23

Do not connect

Reserved

24

Do not connect

Reserved

40

Do not connect

Reserved

(LEON-G100)

4

Do not connect

Reserved

(LEON-G100)

26

Do not connect. Add a test point to provide access

to the pin for debugging.

Reserved

(LEON-G100)

27

Do not connect. Add a test point to provide access

to the pin for debugging.

Reserved

(LEON-G100)

28

Do not connect. Add a test point to provide access

to the pin for debugging.

Reserved

(LEON-G100)

29

Do not connect. Add a test point to provide access

to the pin for debugging.

Table 1: LEON-G100/G200 pinout

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 74 75

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