Motorola APX 7000 Detailed Service Manual page 57

Theory of Operation
: Controller
Removable
Memory
GPS Chipset
UART 2
**
(SIRF/ TI)
EMIFS
FLASH
64 MB
EMIFF
SDRAM
32 MB
*
Keypad /
Switches
*
Front Display
(Part no.
72012006002)
Top Display
Note:
*. Only for Dual-Display Version
**. SiRF is used in Expander board HLN6977A/B and TI is used in Expander board HLN6977C
The functional blocks of the controller are:
• DC Distribution
• Clock Sources
• Processor / Memory
• Removable Memory
• CPLD
• Audio – Internal and External
• MAKO
• User Interfaces
• RF Board Interface
• Encryption (Type III)
• Bluetooth Module Interface
Lighting
Controller
CPLD
SDIO 2
I2C
EMIFS
OMAP 1710
Processor
SSI SPI
Keypad
LCD Cont. RF Board
SPI
Figure 3-24. Controller Electrical Overview
(For display part no. 72012006002)
4.096 MHz Clk
MACE
SSI
Secure
IC
32 kHz Clk
Audio SSI 1
USB / UART
SPI
USB
SDIO 1
I2C
Option
Board
GPIO
Side
Radio
Conn -
Battery Accessory
Audio
GCAI
+
-
Mako IC
Data Side
Speaker
Codec
SPI
Microphones
Class D
Audio PA
3-33
Dual
Main
Speaker
Vocon
Expansion
Module
GCAI