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USB2507 Datasheet(PDF) 10 Page - SMSC Corporation |
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USB2507 Datasheet(HTML) 10 Page - SMSC Corporation |
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10 / 44 page  Integrated USB 2.0 Compatible 7-Port Hub Datasheet Revision 2.3 (08-27-07) 10 SMSC USB2507 DATASHEET 7-PORT USB 2.0 HUB INTERFACE High-Speed USB Data USBDN[7:1] USBDP[7:1] IO-U These pins connect to the downstream USB peripheral devices attached to the Hub’s ports. USB Power Enable PRTPWR[7:1] O12 Enables power to USB peripheral devices (downstream). The active signal level of the PRTPWR7:1 pins is determined by the Power Polarity Strapping function of the PRTPWR_POL pin. Ports [7:5] Green LED GR[7:5] I/O12 Green indicator LED’s for ports[7:5]. LED is active low Port 4:3 Green LED & Port Disable strapping option. GR[4:3]/ PRT_DIS[1:0] I/O12 Green indicator LED for ports 4 and 3. Will be active low when LED support is enabled via EEPROM or SMBus. If the hub is configured by the internal default configuration, these pins will be sampled at RESET_N negation to determine if ports [7:5] will be permanently disabled. Also, the active state of the LED’s will be determined as follows: PRT_DIS[1:0] = ‘00’, All ports are enabled, GR4 is active high, GR3 is active high. PRT_DIS[1:0] = ‘01’, Port 7 is disabled, GR4 is active high, GR3 is active low. PRT_DIS[1:0] = ‘10’, Ports 7 & 6 are disabled, GR4 is active low, GR3 is active high. PRT_DIS[1:0] = ‘11’, Ports 7, 6 & 5 are disabled, GR4 is active low, GR3 is active low. Port [2:1] Green LED & Port Non- Removable strapping option. GR[2:1]/ NON_REM[1:0] I/O12 Green indicator LED for ports 2 and 1. Will be active low when LED support is enabled via EEPROM or SMBus. If the hub is configured by the internal default configuration, these pins will be sampled at RESET_N negation to determine if ports [3:1] contain permanently attached (non- removable) devices. Also, the active state of the LED’s will be determined as follows: NON_REM[1:0] = ‘00’, All ports are removable, GR2 is active high, GR1 is active high. NON_REM[1:0] = ‘01’, Port 1 is non-removable, GR2 is active high, GR1 is active low. NON_REM[1:0] = ‘10’, Ports 1 & 2 are non-removable, GR2 is active low, GR1 is active high. NON_REM[1:0] = ‘11’, Ports 1, 2, & 3 are non-removable, GR2 is active low, GR1 is active low. Ports [7:5] Amber LED AM[7:5] I/O12 Amber indicator LED’s for ports [7:5], LED is active low. Table 4.1 7-Port Hub Pin Descriptions (continued) NAME SYMBOL TYPE FUNCTION |
Similar Part No. - USB2507_07 |
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Similar Description - USB2507_07 |
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