7-10
Troubleshooting Tables:
List of Board and IC Signals
NC
NC
W15
I/O
Pullup
Input
Pull-
down
NC
NC
R10
I/O
Pullup
Input
Pull-
down
uart1_tx
UART1 Serial
Transmit Data
Y14
Output
None
0
Output
Pull-
down
uart1_rx
UART1 Serial Receive
Data
V14
Input
Pullup
Input
Pull-
down
uart1_rts
UART1 Request To
Send (output)
AA15
Output
None
0
Output
Pull-
down
uart1_cts
UART1 Clear To Send
(input)
R14
Input
Pullup
Input
Pull-
down
uart3_tx
UART3 Serial
Transmit Data
M18
Output
None
0
Output
Pull-
down
uart3_rx
UART3 Serial Receive
Data
L14
Input
Pullup
Input
Pull-
down
usb1_txen
USB1 Transmit
Enable
W16
0
Output
None
Input
None
usb1_data
USB1 Bidirectional
Data
W14
I/O
None
0
Output
Pull-
down
usb1_se0
USB1 Bidirectional
Single Ended Zero
R13
I/O
None
U
Output
Pull-
down
usb0_txen
USB0 Transmit
Enable
W4
0
Output
None
1
Output
Pull-
down
usb0_data
USB0 Bidirectional
Data
P9
I/O
None
Input
None
usb0_se0
USB0 Bidirectional
Single Ended Zero
R8
I/O
None
Input
None
ssi_omap_clock
SSI Clock into OMAP
G21
Input
None
Input
None
ssi_omap_sync
SSI Sync into OMAP
H15
Input
None
Input
None
ssi_omap_txd
SSI Serial Data from
CODEC
H20
Input
None
Input
Pull-
down
ssi_omap_rxd
SSI Serial Data to
CODEC
H18
Output
None
0
Output
Pull-
down
spi_arm_clk
ARM SPI Clock from
OMAP
U19
I/O
Pull-
down
Input
None
spi_arm_mosi
ARM SPI Data from
OMAP
W21
I/O
Pull-
down
0
Output
Pull-
down
Table 7-7. 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 Astro APX 3000
Page 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
Page 2: ......
Page 4: ...Notes ...
Page 6: ...vi Document History Notes ...
Page 10: ...x Table of Contents Notes ...
Page 12: ...xii List of Tables Notes ...
Page 18: ...xviii List of Figures Notes ...
Page 22: ...xxii CommercialWarranty Notes ...
Page 46: ...3 20 Theory of Operation Main Board Notes ...
Page 84: ...3 58 Theory of Operation Bluetooth Notes ...
Page 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Page 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Page 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Page 468: ...Glossary 10 Glossary Notes ...
Page 472: ...Index 4 Index Notes ...
Page 473: ......