Service manual

58
DV-NC55U/C/M
Pin No. Terminal name I/O Operation function
52 PDI[8] Output Input DVD/CD data
53 PDI[7] Output Input DVD/CD data
54 PDI[6] Output Input DVD/CD data
55 PDI[5] Output Input DVD/CD data
56 PDI[4] Output Input DVD/CD data
57 PDI[3] Output Input DVD/CD data
58 PDI[2] Output Input DVD/CD data
59 PDI[1] Output Input DVD/CD data
60 PDI[0] Output Input DVD/CD data
61 VSS Supply Digital GND
62 VDD1 Supply Digital power supply +3.3V
63 VSS Supply Digital GND
64 VDD2 Supply Digital power supply +5V
65 5VBUS[7] In/Output CPU bus 5V conversion input/output
66 5VBUS[6] In/Output CPU bus 5V conversion input/output
67 5VBUS[5] In/Output CPU bus 5V conversion input/output
68 5VBUS[4] In/Output CPU bus 5V conversion input/output
69 5VBUS[3] In/Output CPU bus 5V conversion input/output
70 5VBUS[2] In/Output CPU bus 5V conversion input/output
71 5VBUS[1] In/Output CPU bus 5V conversion input/output
72 5VBUS[0] In/Output CPU bus 5V conversion input/output
73 NC – Not Connect
74 NC – Not Connect
75 VSS Supply Digital GND
76 VDD1 Supply Digital power supply +3.3V
77 5VBUFO[B] Output 5V buffer output B
78 5VBUFI[B] Output 5V buffer input B (3.3V input)
79 5VBUFO[A] Output 5V buffer output A
80 5VBUFI[A] Output 5V buffer input A (3.3V input)
81 GPO[3] Output General-purpose output terminal (CPU control)
82 GPO[2] Output General-purpose output terminal (CPU control)
83 GPO[1] Output General-purpose output terminal (CPU control)
84 GPO[0] Output General-purpose output terminal (CPU control)
85 VSS Supply Digital GND
86 VDD1 Supply Digital power supply +3.3V
87 LI[1] Input Gate Input[1]
88 LI[2] Input Gate Input[2]
89 BUFO[C] Output Schmitt trigger buffer output C
90 BUFI[C] Input Schmitt trigger buffer input C
91 BUFO[B] Output Schmitt trigger buffer output B
92 BUFI[B] Input Schmitt trigger buffer input B
93 BUFO[A] Output Schmitt trigger buffer output A
94 BUFI[A] Input Schmitt trigger buffer input A
95 TEST0 Input Test terminal 0 (Normal: Low, Test: Hi) Function
96 TEST1 Input Test terminal 1 (Normal: Low, Test: Hi) RAM
97 TEST2 Input Test terminal 2 (Normal: Low, Test: Hi) Pin
98 NC – Not Connect
99 MRST Input 27MHz Input terminal
100 VSS Supply Digital GND