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3.5.3 Function introduction to 29LV160BE
29LV160BE is a 16Mbit FLASH memorizer, and the damage of U214 may cause troubles, such as power
not on, no disc reading and power on picture mosaic. Pin function is shown as the following table:
Pin Name Function Voltage (when no disc) Data direction
1-9、16-25、48
AO-A19 20 bit address bus I
11 WE Write enable signal, low level is effective 3.23V I
12 RESET Reset, low level is effective 3.23V I
10、13、14
NC Blank pin
15 RY/BY Ready/system busy 3.23V O
26 CE Chip enable, low level effective 0V I
27、46
VSS Ground
28 OE Output enable signal , low level is effective 0V I
29-3、6、38-44
DQ0-DQ14 15 bit data bus O
37 VCC 5V power supply +5V
45 DQ15/A-1
Take word extend mode as data line, and bit extend
mode as address line
I/O
47 BYTE
Select 8-bit or 16-bit output mode. High level is 16-bit
output and low level is 8-bit output
I
3.5.4 Function introduction to HY57V641620HGT-7
64M 16-bit memorizer SDRAM (U211) with the player and the working clock frequency is 166/143MHZ.
The function of 16SDRAM in DVD players is to memorizer the program of AML3298 taken out from FLASH
and information of image and sound taken out from disc to form buffer, add the stability of information output
and add anti-shaking effect of player. Pin function introduction is shown as the following table:
Pin
Name Function Signal flow Pin Name Function Signal flow
1 VDD 3.3V power supply 28 VSS Ground
2 DQ0 Data bus I/O 29 MA4 Address bus I
3 VDDQ 3.3V power supply I/O 30 MA5 Address bus I
4 DQ1 Data bus I/O 31 MA6 Address bus I
5 DQ2 Data bus I/O 32 MA7 Address bus I
6 VSSQ Ground 33 MA8 Address bus I
7 DQ3 Data bus I/O 34 MA9 Address bus I
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