Motorola APX 3000 Detailed Service Manual page 219

Troubleshooting Tables: List of Board and IC Signals
Signal Name
spi_arm_miso ARM SPI Data into
OMAP
spi_dsp_clk DSP SPI Clock from
OMAP
spi_dsp_mosi DSP SPI Data from
OMAP
spi_dsp_miso DSP SPI Data into
OMAP
gps_uart_tx UART Data from
OMAP to GPS IC
gps_uart_rx UART Data from GPS
IC to OMAP
16.8_mhz_clk Timer Reference
Clock Input
trident_ssi[0] Transmit SSI Clock
from RF Board
trident_ssi[1] Transmit SSI Frame
Sync from RF Board
trident_ssi[2] Transmit SSI Data
from OMAP
abacus_ssi[0] Receive SSI Clock
from RF Board
abacus_ssi[1] Receive SSI Frame
Sync from RF Board
abacus_ssi[2] Receive SSI Data
from RF Board
scl I2C Clock
sda I2C Data
rtck JTAG Clock from
Controller
tck JTAG Clock from
JTAG box to
Controller
ntrst JTAG Reset from
JTAG box
omap_tms JTAG Test Mode
Select from JTAG box
Table 7-7. Overall GPIO pin functions (Continued)
Pin or
Description
Ball #
U18
N14
P14
AA17
M18
R9
N18
Y6
W7
AA5
V7
W6
P10
T18
V20
Y17
W18
Y18
V17
SW Initialized
Active State
Direction
Input
I/O
Output
Input
Output
Input
Input
Input
Input
Output
I/O
I/O
Input
I/O
I/O
I/O
Input
Input
Input
HW Reset
*
PU State Direction
Pull- Input
down
Pull- Input
down
Pull- Input
down
Pull- Input
down
None 0 Output
Pullup Input
None Input
Pull- Input
down
Pull- Input
down
Pull- 0 Output
down
Pull- Input
down
Pull- Input
down
Pull- Input
down
None Input
None Input
None U Unknown
None Input
None Input
Input
7-11
*
PU or
PD
Pull-
down
None
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
Pull-
down
None
None
Pull-
down
None
None
None
Pull-
down
Pull-
down