Dealing With Unused Pins - Wavecom GR64 GSM/GPRS Integrator's Manual

5.2

Dealing with Unused pins

Integrators applications may connect all of the GR64 signals pins, or just those
necessary for minimal operation, or most commonly some other permutation.
GR64 signal pins are not connected to the host application the integrator should
terminate them in the following manner.
Table 3: Unused Pin Termination
1, 3, 5, 7, 9
2, 4, 6, 8, 10, 12
VREF must be used to re-reference the application logic levels to the level used by the
1
GR64, see 5.3.1 and 5.6 for more information.
GR64 Integrators Manual
Page: 31/104
Pin Name
VCC
GND
11 CHG_IN
13 ADIN4/GPIO5
14 ON/OFF
15 SIMVCC
16 SIMDET
17 SIMRST
18 SIMDAT
19 SIMCLK
20 DAC
21 GPIO1
22 GPIO2
23 GPIO3
24 GPIO4
25 VRTC
26 ADIN1
27 ADIN2
28 ADIN3
29 SDA
30 SCL
31 BUZZER
32 DSR1/GPIO7
33 LED/GPIO6
34 VREF
35 TX_ON
36 RI/GPIO8
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
Unused pin termination
Must be connected
Must be connected
Leave Open
Leave Open
Must be connected
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Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Ground
Ground
Ground
Leave Open
Leave Open
Leave Open
Leave Open
Leave Open
Must be connected
1
Leave Open
Leave Open
If