Kenwood TK-90, Руководство по обслуживанию

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TK-90
121
Pin No. Port Name I/O Function
51~59 A17~A9 O Address bus (SRAM)
60 VCC2 - 3.3V
61 A8 O Address bus (SRAM)
62 VSS - GND
63~66 A7~A4 O Address bus (SRAM)
67~70 A3~A0 O Address bus (DSP/SRAM)
71 BKC I Backup request input
72 AUXIN I Not used
73 TXC I TX detection
74 PTT O KPE-2 TX request
75 AMU O Not used
76 MMU O KPE-2 active state
77 DCD O FSK detection signals
78 BUSY O Busy output
79~86 D7~D0 I/O Data bus (DSP/SRAM)
87~90 PA7~PA4 O NC
91~93 DEBUG1~DEBUG3 O Not used
94 AVSS - GND
95 DEBUG4 O Not used
96 VREF - 3.3V
97 AVCC - 3.3V
98,99 TEST1,TEST2 O Not used
100 BENB I KPE-2 boot change input
3-2. DSP: 320VC5402PGE (IC10)
Pin No. Port Name I/O Function
1,2 NC
3 Vss - GND
4 DVdd - +3.3V
5 A10 O NC
6 HD7 I/O Host port interface (data bus)
7~11 A11~A15 O NC
12 NC
13 HAS_ I Not used
14 Vss - GND
15 NC
16 CVdd - +1.8V
17 HCS_ I Host port interface (chip select)
18 HR/W I Host port interface (read/write)
19 READY I Not used
20 PS_ O NC
21 DS_ O NC
22 IS_ O NC
23 R/W_ O NC
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