BBK DV718SI, Руководство по обслуживанию

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9 VDDQ 3.3V power supply 36 NC Blank
10 DQ5 Data bus I/O 37 CKE Clock enable signal I
11 DQ6 Data bus I/O 38 CLK System clock input I
12 VSSQ Ground 39 UDQM
Data input/output
screen-shielded signal
I
13 DQ7 Data bus I/O 40 NC Blank
14 VDD 3.3V power supply 41 VSS Ground
15 LDQM
Data input/output screen-shielded
signal
I 42 DQ8 Data bus I/O
16 WE Write control signal I 43 VDDQ 3.3V power supply
17 CAS Line address gating signal I 44 DQ9 Data bus I/O
18 RAS Row address gating signal I 45 DQ10 Data bus I/O
19 CS Chip selection signal I 46 VSSQ Ground
20 SD-BS0 Segmanr address 0 gating signal I 47 DQ11 Data bus I/O
21 SD-BS1 Segmanr address 1 gating signal I 48 DQ12 Data bus I/O
22 MA10 Address bus I 49 VDDQ 3.3V power supply
23 MA0 Address bus I 50 DQ13 Data bus I/O
24 MA1 Address bus I 51 DQ14 Data bus I/O
25 MA2 Address bus I 52 VSSQ Ground
26 MA3 Address bus I 53 DQ15 Data bus I/O
27 VDD 3.3V power supply 54 VSS Ground
3.5.7 function introduction to 4580
1. Description
NJM4580 (U209, U210, U211) is the dual operational amplifier, specially designed for improving the
tone control, which is most suitable for the audio application.
Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, and it is
most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the
industrial measurement tools. It is also suitable for the head phone amp at higher output current, and
further more, it can be applied for the handy type set operational amplifier of general purpose in
application of low voltage single supply type which is properly biased of the low voltage source.
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