ml 1640
ML-2240 & ML-2245 & ML-1640 Series training
February 2008
ML-2240 & ML-2245 & ML-1640 Series training
February 2008
Agenda
Agenda
1. Overview
2. Block & Connection Diagram
3. Schematic – Key concept
4. Cover Open Sensing
5. Q&A
Ⅰ. Introduction
Main Board
SMPS
1-1. Overview(ML–2240 & ML-2245)
HVPS
Waste Sensor
(Only ML-2245)
Ⅰ. Introduction
1-2. Overview(ML–1640)
Main Board
SMPS
HVPS
Ⅰ. Introduction
2. Block & Connection Diagram of ML-2240 & 2245
Ⅰ. Introduction
2-2. Block Diagram of ML-1640
Ⅰ. Introduction
3. Schematic - Key Concepts
3-1. Main PBA – 1(ML-2240&2245)
Main Clock and SSCG
¾ SSCG means Spread Spectrum Clock Generator
¾ Apply SSCG(Spread Spectrum Clock Generator) on the Main Clock.
¾ Main Clock frequency is 12MHz and Video Clock is 14.75MHz.
¾ CPU makes video clock using internal PLL block.
¾ It doesn’t need extra Oscillator for video clock.
Ⅰ. Introduction
3-1. Main PBA – 2(ML-2240&2245)
CPU – Jupiter4e
¾ Jupiter4e is developed using ARM940T 32Bit RISC embedded processor core.
¾ 1.8V internal, 3.3V external(I/O boundary) Voltage used.
¾ Image processor included(GDI only).
¾ On-Chip clock genarator with internal PLL.
¾ Operating frequency is 75MHz ( converting 10MHz main clock to 75MHz operating
clock using internal PLL )
¾ It has Built in Flash Memory : 4MBits (128Kx32bits)
¾ 4Mbit is 0.5MByte. It is small capacity. So we can not store many function in it.
Ⅰ. Introduction
SDRAM – 8MB * 1ea
¾ SDRAM(Max operating frequency : 133MHz) used and SDRAM has
8MByte memory capacity.
¾ SDRAM operates 75MHz which is the same as CPU’s operating
frequency.
¾ F/W program code had been stored in the Built-in Flash Memory
when Main PBA assembled , and the program code can be
upgraded by user.
¾ When upgrading F/W, never turn off the power until completing
upgrade process.
¾ If user turn off the power while upgrading F/W, the program code
will be conflicted and the machine will not work.
¾ If above situation occurs, replace the Main PBA.
¾ After downloading, set automatically conduct power off/on.
3-1. Main PBA – 3(ML-2240&2245)
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