A - 10 Symbol MT2070/MT2090 Integrator Guide
MT2000 Series Electrical Interface/Device Pin-Outs
Device Interface to Cradle
Figure A-1
Digital Cradle Contacts
The device has five contacts for interfacing to a cradle. The signal descriptions in Table A-9 are for reference only.
NOTE Contact numbers are sequentially numbered for reference only.
Table A-8
Device to Cradle Signal Contacts
Contact Function Description
1
High Voltage Power Voltage input allowing the device to charge at full charge rate. Voltage = 12V typical.
2
COM In RXD to device; one of the USB communication signals; a static level used to
determine cradle type and insertion.
3
Ground System ground.
4
COM Out TXD from device; one of the USB communication signals; a static level used to
determine cradle type and insertion.
5
Low Voltage Power Voltage input from the host. Used only when higher voltage is not present. This is a
reduced charge current supply. Voltage = 5V typical.
NOTE Pin definitions are for reference only. Charge device only with Motorola cradles.
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