NV-U74
NV-U74
29
29
5-13. SCHEMATIC DIAGRAM - MAIN Board (8/10) -
• See page 19 for Waveforms. • See page 37 for IC Pin Function Description.
GND
USB_H_P
USB_H_N
1500
R2505
0
R2503
X2501
12MHz
6200
R2502
XRESET_OUT
R2519
1M
MSLED_EN
0.1
C2504
0
R2501
R2526
0
MS_XINS
SYS3.2V
10k
R2509
0.1
C2508
1
C2507
0.1
C2510
0.1
C2509
0.1
C2501
4.7
C2503
0.1
C2506
4700
R2506
TP2506
LSK3019FP8TL
Q2501
LED DRIVE
0
R2507
0
R2508
0
R2532
0
R2531
0
R2530
0
R2529
0
R2527
0
R2528
FL2501
30P
CN2501
DATA0
INS
DATA2
NC
BS
VCC
GND
GND
GND
DATA1
DATA3
SCLK
GND
GND
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
XDAC_CS
MS_LED-
GND
ADC_TXD
XDAC_CLK
SYS5V
SYS5V
NC
GND
GND
ADC_RXD
SYS5V
NC
GND
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
R2518 0
R2517 0
3.2
0
1.5
1.4
3.2
0
0
2.8
2.8
2.9
1.3
0
3.2
0
3.1
0
3.
2
3.
2
0
3.
2
0
0
1.
9
0
0
3.
2
3.
2
3.
2
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
(8/10)
MAIN BOARD
A
1
2
B
C
7
8
F
6
4
3
D
5
9
11
10
12
E
S
Summary of Contents for NV-U74
Page 57: ...MEMO NV U74 57 ...