2.1.8 Power Management
The MT6228 offers various low-power features to help reduce system power
consumption. These features include Pause Mode of 32KHz clocking at Standby State,
Power Down Mode for individual peripherals, and Processor Sleep Mode. In addition,
Mt6228 is also fabricated in advanced low leakage CMOS process, hence providing an
overall ultra low leakage solution.
2.1.9 Package
The MT6228 device is offered in a 13mm x 13mm, 314-ball, 0.65mm pitch,
TFBGA package.
2.2 Platform Features
2.2.1 General
Integrated voice-band, audio-band and base-band analog front ends.
TFBGA 13mm X 13mm, 314-ball, 0.65 mm pitch package
2.2.2 MCU Subsystem
-ARM7EJ-s 32-bit RISC processor
-High performance multi-layer AMB bus
-Java hardware acceleration for fast Java-based games and applets
-Operating frequency: 26/52/104 Mhz
-Dedicated DMA bus
-14DMA channels
-1M bits on-chip SRAM
-256k bits CODE cache
-64K bits DATA cache
-On-chip boot ROM for Factory Flash programming
-Watchdog timer for system crash recovery
-3 sets of General Purpose Timer
-Circuit Switch Data coprocessor
-Division coprocessor
-PPP Framer coprocessor
2.2.3 External Memory Interface
-Supports up to 4 external devices
-Supports 8-bit or 16-bit memory components with maximum size of up to 64M byte
each
-Supports Mobile RAM, and Cellular RAM
-Supports Flash and SRAM/PSRAM with Page Mode or Burst Mode
-Industry standard Parallel LCD Interface
-Supports multi-media companion chips with 8/16 bits data width
-Flexible I/O voltage of 1.8V ~ 2.8V for memory interface
-Configurable driving strength for memory interface
Summary of Contents for SP-770
Page 1: ...SP 770 AS Manual GSM GPRS Cellular Phone SKYSPRING VITELCOM...
Page 6: ...SECTION1 SP 770 PRODUCT OVERVIEW...
Page 27: ...Figure4 Battery Charger Flow chart...
Page 36: ...SECTION2 SCHEMATIC LAYOUT 1 MAIN PART SCHEMATIC LAYOUT 1 1 BASEBAND PART...
Page 37: ...1 2 MMI PART...
Page 38: ...1 3 RF PART...
Page 39: ...2 MAIN KEY PART SCHEMATIC LAYOUT...
Page 40: ...3 LCD...
Page 41: ...SECTION3 PCB LAYOUT 1 MAIN PCB 1 1 Location Map of Main PCB Top...
Page 42: ...1 2 Location Map of Main PCB Bottom...
Page 43: ...2 MAIN KEY PCB 2 1 Location Map of Main KEY PCB Top...
Page 44: ...2 2 Location Map of Main KEY PCB Bottom...
Page 45: ...3 LCD PCB...
Page 46: ...SECTION4 MECHANICAL ASSEMBLY...
Page 48: ...3 LOGIC PART TROUBLESHOOTING...
Page 50: ...3 2 Troubleshooting 2 LCD Display Backlight error...
Page 51: ...3 3 Troubleshooting 3 Key push error...
Page 52: ...3 4 Troubleshooting 4 Vibrator error...
Page 53: ...3 5 Troubleshooting 5 MP3 Play error...
Page 54: ...3 6 Troubleshooting 6 Camera Preview error...
Page 55: ...3 7 Troubleshooting 7 FM Radio Play error...
Page 57: ...3 9 Troubleshooting 9 Bluetooth error...
Page 58: ...4 RF PART TROUBLESHOOTING...
Page 59: ...4 1 Troubleshooting 10 RX path check...
Page 60: ...4 2 Troubleshooting 11 TX path check...
Page 64: ...4 Settings 4 1 Flash Tool setting 1 Firstly Check values of the setting in an Options menu...
Page 66: ...5 SW Downloading 1 Connect LT cable to the PC 2 Press the Download button...
Page 67: ...3 Connect LT cable to the target mobile phone with power off 4 Completion of downloading...
Page 74: ...5 4 Save back up NVRAM data as a file Save back up NVRAM data from target as a file...
Page 77: ...6 4 Download to flash Click download to flash button and then updating parameters is complete...