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ISP1521 Datasheet(PDF) 9 Page - NXP Semiconductors |
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ISP1521 Datasheet(HTML) 9 Page - NXP Semiconductors |
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9 / 53 page  Philips Semiconductors ISP1521 Hi-Speed USB hub controller Product data Rev. 03 — 24 November 2004 9 of 53 9397 750 13702 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. [1] The maximum current the ISP1521 can sink on a pin is 8 mA. [2] Symbol names ending with underscore N (for example, NAME_N) represent active LOW signals. [3] To disable a downstream port n, connect both pins DPn and DMn to VCC (3.3 V); unused ports must be disabled in reverse order starting from port 7. [4] Downstream ports 1 and 2 cannot be disabled. GND 71 - ground supply GRN1_N 72 I/O output — green LED port indicator (open-drain) for downstream facing port 1 input — function of the pin when used as an input is given in Table 9 AMB1_N 73 I/O output — amber LED port indicator (open-drain) for downstream facing port 1 input — function of the pin when used as an input is given in Table 8 GRN6_N 74 I/O output — green LED port indicator (open-drain) for downstream facing port 6 input — function of the pin when used as an input is given in Table 9 AMB6_N 75 I/O output — amber LED port indicator (open-drain) for downstream facing port 6 input — function of the pin when used as an input is given in Table 8 GRN5_N 76 I/O output — green LED port indicator (open-drain) for downstream facing port 5 input — function of the pin when used as an input is given in Table 9 AMB5_N 77 I/O output — amber LED port indicator (open-drain) for downstream facing port 5 input — function of the pin when used as an input is given in Table 8 HUBGL_N 78 O hub GoodLink LED indicator output; the LED is off until the hub is configured; a transaction between the host and the hub will blink the LED off for 100 ms; this LED is off in the suspend mode (open-drain) SCL 79 I/O I2C-bus clock (open-drain); see Table 11 SDA 80 I/O I2C-bus data (open-drain); see Table 11 Table 2: Pin description[1]…continued Symbol[2] Pin Type Description |
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