Motorola APX 7000 Detailed Service Manual page 70

3-46
3.2.4.10.3 ARM SPI
This SPI interface is controlled by OMAP's ARM core. Devices connected to this bus include MAKO,
display controllers and the audio CODEC.
3.2.4.10.4 DSP SPI
This SPI interface is controlled by the DSP core of the OMAP processor. This bus is used to
configure and control devices on the RF deck.
3.2.4.10.5 I2C
The I2C bus of the OMAP processor controls the lighting controller IC. This bus is also available on
the bluetooth option board, routed via J3001.
RF BOARD
DAC
EEPROM
ABACUS
Note:
*. Only for Dual-Display Version.
3.2.4.10.6 1-Wire
The OMAP's 1-wire line is available on the GCAI pin 16. The signal is routed to the side connector
via J4001.
3.2.4.10.7 USB
The OMAP CPU's USB port is routed to the side connector via J4001. The USB signals on the side
connector are illustrated in
DSP SPI
DAC_CS
SPI_DSP_CLK
3
SPI_DSP_MOSI
DSP SPI
SPI_DSP_MISO
EEPROM_CS
ABACUS_CS
ABACUS_CS
CODEC_CS
Figure 3-36. SPI and I2C Configuration
Figure 3-30, on page
VOCON BOARD
ARM SPI
SPI_CLK
SPI_MOSI
McBSP3 SPIF
SPI_MISO
MAKO_CS
TOP_DIS_CS
OMAP 1710
COLOR_DIS_CS
I2C_SCL
I2C
I2C_SDA
TI CODEC
3-41.
Theory of Operation
MAKO
TOP DISPLAY
*
FRONT DISPLAY
CPLD
Inverter
I2C
LIGHTING
CONTROLLERS
OPTION
BOARD
: Controller