Garmin GMA 347, Руководство по установке

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GMA 347 Installation Manual Page 4-9
190-00325-01 Revision A
4.3.6 External Configuration Module
The configuration module contains an I2C temp sensor and EEPROM. The configuration module is
located in the connector backshell. The configuration module stores a backup of the unit configuration.
Table 4-8. External Configuration Module Pin Assignments, J3472
Pin Pin Name Description I/O
1 Configuration Module Ground Ground --
21 Configuration Module Power +3.3 VDC In
40 Configuration Module Data Bi-directional data line In/Out
60 Configuration Module Clock Signal used to clock data input\output Out
4.3.7 Speaker
The speaker output is capable of driving up to 10 Watts into a 4
ȍ
or 8
ȍ
speaker.
Table 4-9. Speaker Pin Assignments, J3472
Pin Pin Name Description I/O
41 SPEAKER AUDIO OUT LO Ground reference for speaker audio --
42 SPEAKER AUDIO OUT HI Speaker audio output Out
4.3.8 PA MUTE
PA MUTE is an output that when pulled low is active. It is used to trigger the mute function on
an external PA system.
Table 4-10. PA MUTE Pin Assignments, J3472
Pin Pin Name Description I/O
64
PA MUTE* OUT Output capable of sinking 500 mA Out
* Denotes Active Low (Ground to activate).