Marantz MD110, Service Manual

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25 26
IC6:CXP84648
PIN ASSIGNMENT
25 A_MUTE OUTPUT A_MUTE ACTIVE LOW O
26 D_MUTE OUTPUT D_MUTE ACTIVE LOW O
27 N.C I/O
28 PO_OFF_CONT OUTPUT FOR RLY ACTIVE HIGH O
29 BACKUP_V I
30 RESET INPUT CPU ACTIVE HIGH I
31 EXTAL OUTPUT FOR 12.288MHZ CRYSTAL O
32 XTAL 12.288MHZ CRYSTAL
33 VSS GND
34 32MHZ CRYSTAL
35 TEX OUTPUT FOR 32MHZ CRYSTAL O
36 AVSS AVSS GND
37 AVREF REFERENC VOLTAGE VDD
38 BACKUP_CH OUTPUT BACKUP CHACK O
39 KEY1 DATA INPUT KEY SCAN CHECK PORT for AD KEY INPUT O
40 KEY2 DATA INPUT KEY SCAN CHECK PORT for AD KEY INPUT O
41 KEY3 DATA INPUT KEY SCAN CHECK PORT for AD KEY INPUT O
42-45 N.C I/O
46 FL_RESET OUTPUT RESET FOR M66005 O
47 FL_CS OUTPUT CS FOR M66005 O
48-54 N.C I/O
55 RC5 SY IN/OUT SYSTEM CONTROL "HIGH": SYSTEM MODE, "LOW": INT MODE O
56 RMC OUTPUT FOR REMOCON DATA O
57-59 N.C O
60 PO_OFF_DET OUTPUT FOR POWER DOWN O
61 N.C I/O
62 N.C I/O
63 RC5_OUT OUTPUT FOR CONTROLING RC-5 O
64 RC5_IN INPUT FOR CONTROLING RC-5 I
65 FL_CLK OUTPUT CLK FOR M66005 O
66 N.C I/O
67 FL_DATA OUTPUT DATA FOR M66005 O
68 ENCODER I
69 ENCODER I
70 BACK/PO_ON OUTPUT TO DRIVE POWER ON(GREEN) ACTIVE HIGH O
71 ST-BY OUTPUT TO DRIVE STBY LED(RED) ACTIVE HIGH O
72 VDD VDD +5V
73 VDD VDD +5V
74 RMC-CONTROL OUTPUT FOR RC-5 ON/OFF O
75-80 N.C I/O
VSS
TX
PIN NO PIN NAME OPERATION DESCRIPTION ASSIGN
PIN NO PIN NAME OPERATION DESCRIPTION ASSIGN
1-3 N.C I/O
4 ME_CTXD UART Communication O
5 ME_CRXD UART Communication I/O
6-13 N.C I/O
14 ME_BACK_ON O
15 CE O
16 M E_RESET O
17-19 N.C I/O
20 OPTION PULL-UP(ENG) / PUII-DOWN(JAP) I/O
21 N.C I/O
22 VOL_CLK CLK SIGNAL OUTPUT 9459F ELECTRONIC VOLUME CONTROL O
23 VOL_EN EN SIGNAL OUTPUT 9459F ELECTRONIC VOLUME CONTROL O
24 VOL_DA DA SIGNAL OUTPUT 9459F ELECTRONIC VOLUME CONTROL O
PIN FUNCTION