LG TCH-M900, Service Manual

Page: 23 / 36

- 2-19 -
Pin No. Symbol I/O Function
60 LOOUTR O R-ch audio output for line-out output
61 LOVDD1 I Power supply for line-out output
62 N.C. - -
63 TMON1 O Test monitor output 1
64 N.C. - -
65 N.C. - -
66 TMON2 O Test monitor output 2
67 DVDD3 I Power supply 3 for digital circuits
68 DVSS2 I Ground 2 for digital circuits
69 *EXT0 I/O Expansion I/O port 0
70 *EXT1 I/O Expansion I/O port 1
71 *EXT2 I/O Expansion I/O port 2
72 MCLK I Microcontroller command clock signal input
73 MDATA I Microcontroller command data signal input
74 MLD I Microcontroller command load signal input
75 *STAT O Status signal output
76 *BLKCK O Subcode block clock signal output
77 *SMCK O 4.2336-/8.4672-MHz clock signal output
78 *PMCK O 88.2-kHz clock signal output
79 *TX O Digital audio interface signal output
80 *FLAG O Flag signal output
81 NRST I LSI reset signal input
82 NTEST I Test mode setting input
83 DVSS3 I Ground 3 for digital circuits
84 X1 I Crystal oscillator circuit input
85 X2 O Crystal oscillator circuit output
86 IOVDD2 I Power supply 2 for digital I/O
87 DVDD2 I Power supply 2 for internal digital circuits
88 D2 I/O DRAM data signal I/O 2
89 D1 I/O DRAM data signal I/O 1
90 D0 I/O DRAM data signal I/O 0
91 D3 I/O DRAM data signal I/O 3
92 D4 I/O DRAM data signal I/O 4
93 D5 I/O DRAM data signal I/O 5
94 D6 I/O DRAM data signal I/O 6
95 D7 I/O DRAM data signal I/O 7
96 D15 I/O DRAM data signal I/O 15
97 D14 I/O DRAM data signal I/O 14
98 DRVDD2 I Power supply 2 for DRAM interface I/O
99 D13 I/O DRAM data signal I/O 13
100 D12 I/O DRAM data signal I/O 12