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
Содержание SP-770
Страница 1: ...SP 770 AS Manual GSM GPRS Cellular Phone SKYSPRING VITELCOM...
Страница 6: ...SECTION1 SP 770 PRODUCT OVERVIEW...
Страница 27: ...Figure4 Battery Charger Flow chart...
Страница 36: ...SECTION2 SCHEMATIC LAYOUT 1 MAIN PART SCHEMATIC LAYOUT 1 1 BASEBAND PART...
Страница 37: ...1 2 MMI PART...
Страница 38: ...1 3 RF PART...
Страница 39: ...2 MAIN KEY PART SCHEMATIC LAYOUT...
Страница 40: ...3 LCD...
Страница 41: ...SECTION3 PCB LAYOUT 1 MAIN PCB 1 1 Location Map of Main PCB Top...
Страница 42: ...1 2 Location Map of Main PCB Bottom...
Страница 43: ...2 MAIN KEY PCB 2 1 Location Map of Main KEY PCB Top...
Страница 44: ...2 2 Location Map of Main KEY PCB Bottom...
Страница 45: ...3 LCD PCB...
Страница 46: ...SECTION4 MECHANICAL ASSEMBLY...
Страница 48: ...3 LOGIC PART TROUBLESHOOTING...
Страница 50: ...3 2 Troubleshooting 2 LCD Display Backlight error...
Страница 51: ...3 3 Troubleshooting 3 Key push error...
Страница 52: ...3 4 Troubleshooting 4 Vibrator error...
Страница 53: ...3 5 Troubleshooting 5 MP3 Play error...
Страница 54: ...3 6 Troubleshooting 6 Camera Preview error...
Страница 55: ...3 7 Troubleshooting 7 FM Radio Play error...
Страница 57: ...3 9 Troubleshooting 9 Bluetooth error...
Страница 58: ...4 RF PART TROUBLESHOOTING...
Страница 59: ...4 1 Troubleshooting 10 RX path check...
Страница 60: ...4 2 Troubleshooting 11 TX path check...
Страница 64: ...4 Settings 4 1 Flash Tool setting 1 Firstly Check values of the setting in an Options menu...
Страница 66: ...5 SW Downloading 1 Connect LT cable to the PC 2 Press the Download button...
Страница 67: ...3 Connect LT cable to the target mobile phone with power off 4 Completion of downloading...
Страница 74: ...5 4 Save back up NVRAM data as a file Save back up NVRAM data from target as a file...
Страница 77: ...6 4 Download to flash Click download to flash button and then updating parameters is complete...