Interface Description EMII-800 Service Manual Application Information
EMII-800 V1.0 AnyDATA.NET Proprietary
Use Subject to Restrictions
3.3.2 Memory Part
Memory part, MCP consists of 16M Flash memory and 4M static RAM.
In the MCP, there are programs used for terminal operation. The programs can be changed through down
loading after the assembling of terminals and data generated during the terminal operation are stored
temporarily and non-volatile data such as unique numbers (ESN) of terminals are stored.
3.3.3 Power Supply Part
When the input voltage (4.0V) in the DTSS-1900 is fed to the five regulators generated +3.0V and the
one regular generated +2.7V. The generated voltages are used for MSM5100, RFT3100, IFR3000 and
other LOGIC parts. PWR ASIC is operated by the control signal SLEEP/ from MSM5100 and
POWER_EN signal.
3.3.4 Logic Part
The Logic part consists of internal CPU of MSM, MCP. The MSM5100 receives TCXO (=19.68Mz)
from VC-TCXO and CHIPX8 clock signals from the IFR3000, and then controls the module during the
CDMA and the FM mode. The major components are as follows:
CPU : ARM7TDMI core
MEMORY : MCP (MB84VD21182A-85-PBS : U505)
CPU
ARM7TDMI CMOS type 16-bit microprocessor is used and CPU controls all the circuitry. For the
CPU clock, 32.768KHz is used.
MCP(16M +4M)
MCP is used to store the terminal
…
s program. Using the down-loading program, the program can be
changed even after the terminal is fully assembled.
SRAM is used to store the internal flag information, call processing data, and timer data.
