Prelminary | MB91401 |
2004.11.12 |
SYSTEM (9 pin)
Pin name | Pin no. | Polarity | I/O | Circuit | Function/application | ||||
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| Clock input pin | |||
XINI | 8 | IN | D | Input pin of clock generated in clock generator. 10 MHz to | |||||
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| 50 MHz frequency can be input. | ||
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| Reset input pin | ||
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| This pin inputs a signal to initialize the LSI. | |||
INITXI | 204 | IN | D | When turning on the power supply, apply “0” to the pin until | |||||
tive | the clock signal input to the CLKIN pin becomes stable. | ||||||||
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NMIX | 206 | Nega- | IN | D | NMI input pin | ||||
tive | |||||||||
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INT7 | 150 |
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| External interrupt input pins | ||
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| These pins input an external interrupt request signal. | |||||
INT6 | 87 | IN | D | ||||||
For external interrupt detection, set the ENIR, EIRR and | |||||||||
INT5 | 16 |
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| ELVR registers of the FR core. | ||||
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MDI2 | 80 | |
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| Mode pins | |||
MDI1 | 142 | IN | D | These pins determine the operation mode of the LSI. | |||||
MDI0 | 79 |
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| Always set this bit to “001”. | ||
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OSCILLATOR (3 pin) |
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Pin name | Pin no. | Polarity | I/O | Circuit | Function/application | ||||
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OSCEA | 12 | | IN | G | Crystal oscillation input pin | ||||
Input pin of crystal oscillation cell. | |||||||||
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| Crystal oscillation control input pin | |||
OSCC | 145 | IN | D | Oscillation control pin of crystal oscillation cell. | |||||
tive | “0” : Oscillation | ||||||||
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| “1” : Oscillation stop | ||
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OSCEB | 10 | | OUT | G | Crystal oscillation output pin | ||||
Output pin of crystal oscillation cell. | |||||||||
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PLL CONTROL (5 pin) |
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Pin name | Pin no. | Polarity |
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| PLL/through mode (reset) switching input pin |
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PLLS | 147 |
| IN | D | “0” : PLL through mode (oscillation stop) |
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| “1” : PLL oscillation mode |
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| Input clock division ratio select input pin |
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PLLSET1 | 144 |
| IN | D |
| “0” : Input clock direct |
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| “1” : Input clock divided by 2 |
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| Division ratio select input to PLL FB pin |
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PLLSET0 | 81 |
| IN | D | “0” : Two dividing frequency is input to the terminal FB. |
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| “1” : Four dividing frequency is input to the terminal FB. |
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| PLL bypass select input pin |
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PLLBYPAS | 9 |
| IN | D |
| “0” : PLL used |
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| “1” : PLL unused |
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| Input clock switching input pin |
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CLKSEL | 77 |
| IN | D |
| “0” : XINI (External clock) |
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