LG KT520 Service Manual page 26

B. CPU Subsystem
• Access CPU subsystem
The digital baseband controller includes an access CPU subsystem, which includes the submodules
described below.
- 32 KiB I-cache
- 16 KiB D-cache
- Page table
- Memory Management Unit (MMU)
- JTAG
- ETM9
- 26 KiB I-TCM
- 8 KiB D-TCM
• Application CPU subsystem
The digital baseband controller includes an Application CPU subsystem, which includes the
submodules described below.
- 32 KiB I-cache
- 16 KiB D-cache
- Page table
- MMU
- JTAG
- ETM9
- 8 KiB I-TCM
- 8 KiB D-TCM
C. Peripheral Hardware Subsystem
The digital baseband controller includes hardware that supports mobile terminal peripherals such as a
MMC, SD, UART, I2C, USB, keypad, and infrared. Collectively, this hardware comprises the
Peripheral subsystem.
The functional blocks of the Peripheral subsystem connect to the peripheral bus through four separate
bridges, which provide a simple interface to support different timing and memory access
arrangements.
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3. TECHNICAL BRIEF
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