6
25A1104 (Rev.1)
Digital Section
The Freescale 8Kb FLASH microprocessor was chosen to maximize its benefits and to reduce system cost. The internal ADC converters
are utilized to sample DC voltages to handle switching diversity, audio metering, audio muting, noise squelching, and tone-key detection.
RF band detection uses four digital inputs. In addition, the Freescale microprocessor controls the 7-segment LED display and handles the
user interface channel selection.
Display Circuitry
1 Software Version
To verify which software version is loaded, use the following procedure:
Hold the select button while plugging in the device. While continuing to hold the select button down, the display should start flashing and
sequentially read out a repeating message similar to this one:
"b01-15-12c0-34c0"
This can be decoded as follows:
b:this is a receiver software load. (a indicates a transmitter load)
01-:major version number.
15-minor version number.
12c0-software audio trim level
34c0-software predictive diversity rssi trim level
ACCESSING DIFFERENT MODES
NORMAL MODE
UNDER USUAL USAGE CONDITIONS, THE DEVICE WILL POWER ON IN NORMAL MODE. BENCH TESTING SHOULD NOT BE DONE IN
NORMAL MODE. SINCE THE ATE MODE PROVIDES A SPECIAL FREQUENCY MAP, THE FREQUENCIES WILL BE DIFFERENT IN
NORMAL MODE.
ATE MODE
A Microwire serial bus using three pins, TP_ATELE, TP_ATEDATA, and TP_ATECLK will control the ATE mode. This interface can be
used to control and test all microprocessor-based functions of the board.
These ATE frequencies are shown in
Table 1
Table 1
1, 2, 3 b, c, d
ATE Mode Test
Frequencies (MHz)
H7 K7 M7 M10 P11 Q11 R10 R11 R12 JB T10
1 Flow b 536.000 589.500 662.000 674.000 702.000 740.000 799.700 770.000 794.000 806.000 854.000
2 Fmid c 542.000 594.500 668.000 681.500 708.000 746.000 806.000 777.000 799.700 808.000 859.500
PG4
3 Fhigh d 548.000 602.000 674.000 686.000 714.000 751.700 812.000 781.700 806.000 809.850 864.800
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