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DSB75 Development Support Board Rev. B1 Hardware Description

Strictly confidential / Released

DSB75_hd_v08 Page 45 of 94 29.09.2005

Table 16: Pin assignment of the I²C interface X511

X511

Name I/O Description X100 signal

name

Config.

switches

Remark

1 I2C_CLK_5V O Clock,

(5V logic)

I2CCLK S500:3 EEPROM

accessible

2 I2C_CLK_3V O Clock,

(3V logic)

I2CCLK S500:1 External pull-up

resistor required

3 I2C_DAT_5V I/O Data,

(5V logic)

I2CDAT S501:3 EEPROM

accessible

4 I2C_DAT_3V I/O Data,

(3V logic)

ISCDAT S501:1 External pull-up

resistor required

5 n.c.

6 n.c.

7 5V0 O 5V0 supply

voltage

ON when DSB75

is supplied

8 GND Ground

9 VDD O 2.9V supply

voltage

ON when GSM

module is active

10 GND Ground

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 93 94

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