Pin No. | Pin Name | I/O | Function | ||||||||
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45 |
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| ILLON | O | Illumination power supply control pin | |||||
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| At PW SEL on: ACC on: “H” |
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| At PW SEL off: Power on: “H” |
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46 |
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| BEEP | O | Beep sound output pin | |||||
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47 |
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| MUT | O | System mutig control pin. At muting: “H” | |||||
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48 |
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| VOLCE | O | Chip enable output pin to electrical volume | ||||||
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49 |
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| SUBCE | O | Chip enable output pin to sub volume (not used) | ||||||
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50 |
| VOLCKO | O | Clock output pin to electrical volume | |||||||
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51 |
| SUBCKO | O | Clock output pin to sub volume (not used) | |||||||
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52 |
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| VOLSO | O | Data output pin to electrical volume | ||||||
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53 |
| TAPMUT | O | Tape mutig control pin. At muting: “H” | |||||||
54 |
| DOLON | I/O | DOLBY control input/output pin | |||||||
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| At initial mode: valid/invalid selection input of DOLBY function |
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| At normal mode: DOLBY on/off output |
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55 |
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| DOLBC | I/O | DOLBY B/C selection pin | ||||||
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| At initial mode: valid/invalid selection input of DOLBY C function |
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| At normal mode: DOLBY B/C selection output. “L”: DOLBY B, “H”: DOLBY C |
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56 |
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| AMSIN | I | Tape music with/without detection pin. “L”: with music | ||||||
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57 |
| MTLSEL | I/O | METAL control input/output pin | |||||||
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| At initial mode: auto/manual serection input of METAL function. “L”: manual |
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| At manual mode: METAL on/off output. “H”: on |
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| At auto mode: input st 30 MTLIN |
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58 |
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| AD_ON | O | Power supply control pin for A/D conversion | ||||||
59 |
| RAMBU | I | Reset detection pin of RAM | |||||||
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60 |
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| RESET | I | Reset input pin | |||||
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61 |
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| SIRCS | I | SIRCS signal input pin | |||||
62 |
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| BU_IN | I | Buck up power supply detection pin | |||||
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63 |
| PW_SEL | I | Power select switch input pin | |||||||
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64 |
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| ACCIN | I | Accessory voltage detection pin | |||||
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65 |
| NOSESW | I | Front panel removal or attaching detection pin | |||||||
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66 |
| TELMUT | I | Telephone muting detection pin. “L”: 20dB audio muting | |||||||
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67 |
| KEYACK | O | Key acknowledge signal input pin | |||||||
68 |
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| VDD | — | Power supply | |||||
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69 |
| OSCOUT | O | Main system clock output pin (5MHz) | |||||||
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70 |
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| OSCIN | I | Main system clock input pin (5MHz) | |||||
71 |
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| GND | — | GND | |||||
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72 |
| XT_OUT | O | Sub system clock output pin (32.768kHz) | |||||||
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73 |
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| XT_IN | I | Sub system clock input pin (32.768kHz) | |||||
74 |
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| AVDD | — | Power supply | |||||
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75 |
| AVREF0 | I | A/D reference voltage input pin | |||||||
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76, 77 | KEYIN0, KEYIN1 | I | Key input pin (A/D input) | ||||||||
78 |
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| D.POSI | I | |||||||
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79 |
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| VSM | I | FM/AM signal meter voltage detection pin (A/D input) | |||||
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80 |
| KEYSEL | I | Key function setting pin | |||||||
– 40 –
