NEC NEC-FA150ATUA, Service Manual

Page: 16 / 47

Page 13 Circuit Description
NEC-FA150ATUA
Port Pin No Signal Name Initial Seeting Function Remark
P6.0
36
SCSB ~ uP_Clocked Serial Chip Selecet Input
P5.7
37
SRDYB ~ uP_Clocked Serial RDY Output
P5.6
38
Nc ~ ~
P5.5
39
EPM ~ ISP EPM Function
P5.4
40
Soundsel ~ ~
P5.3
41
Nc ~ ~
P5.2
42
Nc ~ ~
P5.1
43
Nc ~ ~
P5.0
44
CE ~ ISP CE Function
P4.7
45
Nc ~ ~
P4.6
46
Nc ~ ~
P4.5
47
Nc ~ ~
P4.4
48
Nc ~ ~
P4.3
49
Nc ~ ~
P4.2
50
SUSP L Audio Suspand Function Active H
P4.1
51
Wprt_0 L Serial EEPROM Write Protection Active H
P4.0
52
Mute L Audio Mute Function Active H
P3.7
53
Proceed H uP_Proceed Active L
P3.6
54
Right H uP_Right Active L
P3.5
55
Reset_46 H uP_Reset_46 Active L
P3.4
56
Down H uP-Down Active L
P3.3
57
UP H uP_UP Active L
P3.2
58
Left H uP_Left Active L
P3.1
59
Exit H uP_Exit Active L
60
Vcc H uP_Vcc 3.3V Active L
P3.0
61
Power H uP_Power Active L
62
Vss ~ ~
P2.7
63
Nc ~ ~
P2.6
64
Nc ~ ~
P2.5
65
LED_A L Amber Color LED Enable Active H
P2.4
66
LED_G H Green Color LED Enable Active H
P2.3
67
Pixelsel ~ ~
P2.2
68
Nc ~ ~
P2.1
69
Nc ~ ~
P2.0
70
Nc ~ ~