Chapter 5 Switching Hub Block Diagram
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| E E P R O M |
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| 24 M H z |
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U p stre a m | 1 .8V | 3 .3V |
| U p stre a m | P in |
| or S M B us |
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| C rystal |
| U pstream | |||
C ap |
| S trapping | M aster |
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U S B D ata |
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| V B U S | O ptions | S C L S D |
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| U S B D ata | |||
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| 1.8V |
| V B U S | P ow er | Internal | S erial |
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| P LL |
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| R eg . |
| D efaults |
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| D etect | S elect |
| In terface |
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U p stream |
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| U pstream |
P H Y |
| S IE |
| C o n tro ller |
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| C ontroller |
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| S IE |
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| P H Y | ||
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R ep eater |
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| R epeater |
| TT | TT | TT | TT | P ort |
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| P ort |
| TT | TT | TT | TT |
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| #1 | #2 | #3 | #4 C ontroller |
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| C ontroller | #4 | #3 | #2 | #1 |
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| R outing Logic |
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| R outing Logic | |||
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| S w itching Logic |
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| P ort | ||
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| A ssign |
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| [3:0] |
| P ort #1 |
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| P ort #2 |
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| P ort #3 |
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| P ort #4 | |||
D ow nstream | O C Sense |
| D ow nstream | O C S ense | D ow nstream | O C S ense | D ow nstream | O C S ense | |||||||
P H Y #1 | S w itch D river | P H Y #2 |
| S w itch D river |
| PH Y #3 | S w itch D river | P H Y #4 | Sw itch D river | ||||||
| LE D D rivers |
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| LE D D rivers |
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| LE D D rivers |
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| LED D rivers | ||||
D ow nstream | O C S w itch/LE DD ow nstream |
| O C S w itch/LE D | D ow nstream | O C | S w itch/LE D D ow nstream | O C S w itch/LE D | ||||||||
U S B D ata | S ense | D rivers | U S B D ata | S ense | D rivers | U S B D ata S ense | D rivers | U S B D ata | S ense D rivers | ||||||
Figure 5.1 USB2524 Switching Hub Block Diagram
Revision 1.91
17 DATASHEET
SMSC USB2524