USB Hub with Integrated 10/100 Ethernet Controller
Datasheet
Table 3.3 Hub Configuration (continued)
EEPROM |
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OFFSET |
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| DESCRIPTION | DEFAULT | |
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37h |
| Port Remap 3 Register (PRTR3) | 03h | ||||
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| When a hub is enumerated by a USB Host Controller, the hub is only permitted to |
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| report how many ports it has. The hub is not permitted to select a numerical range or |
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| assignment. The Host Controller will number the downstream ports of the hub starting |
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| with the number 1, up to the number of ports that the hub reported having. |
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| The host’s port number is referred to as “Logical Port Number” and the physical port |
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| on the hub is the “Physical Port Number”. When remapping mode is enabled (see |
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| Port |
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| Format), the hub’s downstream port numbers can be remapped to different logical port |
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| numbers (assigned by the host). |
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| Note: | The OEM must ensure that Contiguous Logical Port Numbers are used, |
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| starting from #1 up to the maximum number of enabled ports, this ensures |
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| that the hub’s ports are numbered in accordance with the way a Host will |
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| communicate with the ports. |
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| Bit [7:4] = | - | RESERVED |
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| Bit [3:0] = | 0000 | Physical Port 3 is Disabled |
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| 0001 | Physical Port 3 is mapped to Logical Port 1 |
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| 0010 | Physical Port 3 is mapped to Logical Port 2 |
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| 0011 | Physical Port 3 is mapped to Logical Port 3 |
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| All others RESERVED |
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38h |
| RESERVED |
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| 00h | |
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39h |
| Status/Command Register (STCD) | 01h | ||||
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| Refer to Table 3.9, “Status/Command Register (STCD) Format,” on page 31 for |
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| details. |
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| Note 3.1 | Default value is dependent on device revision. |
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SMSC LAN9512 | 27 | Revision 1.0 |
| DATASHEET |
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