Zeus host, Interface, J9 –io270 audio/ptt connector – Eurotech Appliances ZEUS PXA270 User Manual
Page 121
ZEUS Technical Manual
Appendix F - ZEUS Modem details
© 2007 Eurotech Ltd Issue D
121
The following table shows the functions of control/status pins on the host interface:
EXP1_GPIO Signal name
Dir
Active
Function
7
PTT
Output
High
Push To Talk. See note 1
8
GSM_ON
Input
See note 2 Modem enable
9
GSM_STS
Output
High
Modem ON/OFF status
10
GPS_ON
Input
High
GPS module enable
11
GPS_PSUON
Input
High
Not Used (PU keeps it at logic ‘1’)
12 GPS_BOOT
Input
NA
Not
Used
(PU keeps it at logic ‘1’)
13
GPS_PPS
Output
NA
GPS Pulse Per Second
Note 1: Only available with iDEN modules.
Note 2: Please see the datasheet of the particular module used.
GSM_ON is inverted when used with iDEN modules
(GSM_ON=’0’ – iDEN module is on).
J9 –iO270 audio/PTT connector
Connector:
NELTRON 2417RJ-8-F4, 8-way 2mm header
Mating connector:
JST PHR-8
, 8-way 2mm housing, female
Mating crimps:
JST SPH-002T-P0.5S
Pin Signal
name
1 SPKR-
2 SPKR+
3 3V_OPT
4 VCC
5 GND
6 PTT
7 MIC-
8 MIC+
As viewed from the connector pins
1
8