6.2.Signal summary
The physical interface consists of single ended TTL compatible receivers and drivers
communicating through a
6.2.1. Signal Specification
Figure 8 shows the Signal Specifications
Sig. Name | Type |
| Receivers/Drivers Caracteristics withoutExternal pullup Resistor | NOTE | |||||
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| Min | Max | Condition | Bidirectional | |||
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| IOH=1 mA | |
| Rx |
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| VOH | Voltage Output High |
| Rx=infinity | ||
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| IOL=12 mA | Rs1=0 OHM | |
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| VOL | Voltage Output Low |
| 0.4 V | ||
HD0 - HD15 |
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| VIH | Input HIGH Voltage | 2.4 V |
| TTL | Rs2=33 OHM |
Rs1Rs2 |
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| VIL | Input LOW Voltage |
| 0.6 V | TTL | ||
/DASP |
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| Rx=10 kOHM | |||||
| P |
| ILI | Input leakage Current | Pullup Resistor(Ri) | ||||
/PDIAG |
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| Rs1=0 OHM | ||||||
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| IOL | Driver sink current | 24 mA |
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| timing |
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| Rs2=0 OHM | |||
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| N | ILO | Output Leakage Current | Pullup Resistor(Ri) | ||||
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| control | /PDIAG, | ||||||
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| Input Capacitance |
| 15 pF |
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| CI |
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| /DASP | ||
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| CO | Output Capacitance |
| 15 pF |
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| Rx |
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| VOL | Voltage Output Low |
| 0.5 V | IOL=12 mA | Open Drain |
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| IOL | Driver sink current | 24 mA |
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| Rx=1.2 kOHM |
/IOCS16 | Rs |
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| CO | Output Capacitance |
| 15 pF |
| Rs=0 OHM |
N |
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| Rx |
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| VOH | Voltage Output High | 2.4 V |
| IOH=400 µA | Rx=1 kOHM |
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| Rs | P |
| VOL | Voltage Output Low |
| 0.5 V | IOL=12 mA | Rs=22 OHM |
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IORDY |
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| timing | IOL | Driver sink current | 24 mA |
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| N | control |
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| CO | Output Capacitance |
| 15 pF |
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| VOH | Voltage Output High |
| IOH=400 µA |
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| Rs=22 OHM |
| Rs | P |
| VOL | Voltage Output Low |
| 0.4 V | IOL=12 mA | /INTRQ |
/HDRQ |
| timing | IOL | Driver sink current |
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| /HDRQ | |
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| 24 mA |
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/INTRQ |
| N | control |
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| CO | Output Capacitance |
| 15 pF |
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| VIH | Input HIGH Voltage | 2.0 V |
| TTL | Rx=infinity |
/HWR | Rx |
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| VIL | Input LOW Voltage |
| 0.8 V | TTL | Rs=82 OHM |
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/HRD |
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| ILI | Input leakage Current | Pullup Resistor(Ri) | |||
Rs |
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| /HDAK | ||||||
HA0 - HA2 |
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| Input Capacitance |
| 15 pF |
| Rx=infinity | |
/HCS1/HCS3 |
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| CI |
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/HDAK |
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| Rs=120 OHM |
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| /HRD | |
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| Rx=10 kOHM |
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| Rs=82 OHM |
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| /HCS1,/HCS3 |
| 100 kOHM |
| VIH | Input HIGH Voltage | 2.4 V |
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RESET |
| VIL | Input LOW Voltage |
| 0.6 V |
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| ILI | Input leakage Current |
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| 82 OHM |
| CI | Input Capacitance |
| 15 pF |
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Figure 8 Signal Specifications
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