Industrial Temperature Rated USB 2.0
Datasheet |
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4.2.1.17 | Register 10h: | |
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BIT |
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NUMBER | BIT NAME | DESCRIPTION |
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7:0 | POWER_ON_TIME | Power On Time: The length of time that it takes (in 2 ms intervals) from the |
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| time the host initiated |
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| good on that port. |
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4.2.1.18Register F6h: Boost_Up
BIT |
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NUMBER | BIT NAME | DESCRIPTION |
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7:2 | Reserved | Reserved |
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1:0 | BOOST_IOUT | USB electrical signaling drive strength Boost Bit for the Upstream Port. |
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| ‘00’ = Normal electrical drive strength = No boost |
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| ‘01’ = Elevated electrical drive strength = Low (approximately 4% boost) |
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| ‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost) |
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| ‘11’ = Elevated electrical drive strength = High (approximately 12% boost) |
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| Note: “Boost” could result in |
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| example would be Test J/K levels), the OEM should use a 00 value |
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| unless specific implementation issues require additional signal |
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| boosting to correct for degraded USB signalling levels. |
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4.2.1.19Register F8h: Boost_2:0
BIT |
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NUMBER | BIT NAME |
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7:4 | Reserved | Reserved | |
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3:2 | BOOST_IOUT_2 | USB electrical signaling drive strength Boost Bit for Downstream Port ‘2’. | |
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| ‘00’ = Normal electrical drive strength = No boost | |
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| ‘01’ = Elevated electrical drive strength = Low (approximately 4% boost) | |
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| ‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost) | |
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| ‘11’ = Elevated electrical drive strength = High (approximately 12% boost) | |
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| Note: | “Boost” could result in |
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| example would be Test J/K levels), the OEM should use a 00 value |
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| unless specific implementation issues require additional signal |
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| boosting to correct for degraded USB signalling levels. |
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1:0 | BOOST_IOUT_1 | USB electrical signaling drive strength Boost Bit for Downstream Port ‘1’. | |
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| ‘00’ = Normal electrical drive strength = No boost | |
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| ‘01’ = Elevated electrical drive strength = Low (approximately 4% boost) | |
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| ‘10’ = Elevated electrical drive strength = Medium (approximately 8% boost) | |
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| ‘11’ = Elevated electrical drive strength = High (approximately 12% boost) | |
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| Note: | “Boost” could result in |
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| example would be Test J/K levels), the OEM should use a 00 value |
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| unless specific implementation issues require additional signal |
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| boosting to correct for degraded USB signalling levels. |
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SMSC USB2512i | 21 | Revision 1.92 |
| DATASHEET |
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