IO mapping
There are three main control bits used in the U2121A- 101 as shown in tables below. These control bits also refers to the U2121A control bit status.
Table 4 | Output enable/disable control |
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Control Stage | Control Bit, DO14 | Description | ||
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Output disabled | OFF (0) |
| To disable all outputs in U2121A- 101 | |
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Output enabled | ON (0) |
| To enable all outputs in U2121A- 101 | |
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Table 5 | Position information read back control | |||
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RF Switches | Control Bit |
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| D16 | D15 |
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8765x and 8762/3/4 | OFF (0) | ON (1) | Read position information from 8765x and | |
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| 8762/3/4 series switches |
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N181x |
| ON (1) | OFF (0) | Read position information from N181x |
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| series switches |
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WA RN I N G | DO NOT set both D15 and D16 control bits to ON stage! |
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8 |
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