Troubleshooting Tables:
List of Board and IC Signals
7-47
mortable
Specifies Mobile or
Portable hardware
W13
0=Porta-
ble
Input
None
0
Output
gcai_gpio3
GPIO3
AA15
Input
None
0
Output
gcai_gpio4
GPIO4
R14
Input
None
Input
Pull-
down
bluetooth_ptt
PTT signal from Blue-
tooth AVR
Y5
0=Pressed
Input
Pul-
lup
Input
Pull-
down
f2_timer_input_ca
pture
"Receives one of
three timing signals
mux'ed through
CPLD - Abacus Sync,
DMCS, Ramp DAC
Trigger.
"P20
Input
Pull-
down
Input
Pull-
down
bt_avr_status
AVR status read by
OMAP
P18
Input
Pul-
lup
Input
Pull-
down
enc_wakeup
MACE encryption
wakeup
A6
1
Output
1
Output
enc_reset
MACE encryption
reset
B6
0
I/O
Pul-
lup
1
I/O
Pul-
lup
5V_pwm_en
Forces SW5 to PWM
P14
1
Output
Pul-
lup
0
Output
Pul-
lup
gcai_gpio2
GPIO2
C13
Input
None
Input
None
gcai_gpio1
GPIO1
C11
Input
None
Input
None
gcai_gpio0
GPIO0
M7
Input
None
Input
None
gcai_vbus_i_limit
Current limit select for
GCAI VBUS
C6
1=500mA
Output
0
Output
f2_paramp_mon
Factory use to test F2
transmit timing.
Allows TX/RX signal
to appear on GCAI
GPIO3.
C5
1=Factory
Test
Output
Pul-
lup
0
Output
Pul-
lup
top_disp_data_ctrl
Select for data or
control on top dis-
play(Not Used in
WWP)
P12
1=data
Output
0
Output
top_display_reset
Reset for color front
display( Not Used in
WWP)
M12
0
Output
1
Output
Table 7-18. Overall GPIO pin functions (Continued)
Signal Name
Description
Pin
or
Ball #
Active
State
SW Initialized
HW Reset
Direction
*
PU
State Direction
*
PU
or
PD
Summary of Contents for APX 2000
Page 1: ...APXTM TWO WAY RADIOS APX 1000 APX 2000 APX 4000 APX 4000Li DETAILED SERVICE MANUAL ...
Page 4: ......
Page 6: ...iv Document History Notes ...
Page 8: ...Notes vi Commercial Warranty ...
Page 10: ...Notes ...
Page 22: ...xiv List of Figures Notes ...
Page 226: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 688: ...Index 4 Index Notes ...
Page 690: ...ii Notes ...
Page 700: ...xvi List of Figures Notes ...
Page 806: ...5 50 Troubleshooting Charts PA Failure Notes ...
Page 1008: ...8 178 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 84012621001 Notes ...
Page 1062: ...8 234 Schematics Boards Overlays and Parts Lists Keypad Board M2 and M3 PC000261A01 Notes ...
Page 1064: ...ii Notes ...
Page 1068: ...Notes A 4 EMEA Warranty Service and Technical Support Further Assistance From Motorola ...
Page 1090: ...Glossary 10 Glossary Notes ...
Page 1094: ...Index 4 Index Notes ...
Page 1095: ......