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ISP1521 Datasheet(PDF) 8 Page - NXP Semiconductors |
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ISP1521 Datasheet(HTML) 8 Page - NXP Semiconductors |
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8 / 53 page  Philips Semiconductors ISP1521 Hi-Speed USB hub controller Product data Rev. 03 — 24 November 2004 8 of 53 9397 750 13702 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. DP3 55 AI/O downstream facing port 3 D+ connection (analog)[3] VCC2 56 - transceiver supply voltage 2 (3.3 V) GND 57 - ground supply DM4 58 AI/O downstream facing port 4 D − connection (analog)[3] DP4 59 AI/O downstream facing port 4 D+ connection (analog)[3] NOOC 60 I no overcurrent protection selection input; connect this pin to HIGH (3.3 V) to select no overcurrent protection; if no overcurrent is selected, all OC_N pins must be connected to VREF(5V0) GRN4_N 61 I/O output — green LED port indicator (open-drain) for downstream facing port 4 input — function of the pin when used as an input is given in Table 9 AMB4_N 62 I/O output — amber LED port indicator (open-drain) for downstream facing port 4 input — function of the pin when used as an input is given in Table 8 GRN3_N 63 I/O output — green LED port indicator (open-drain) for downstream facing port 3 input — function of the pin when used as an input is given in Table 9 AMB3_N 64 I/O output — amber LED port indicator (open-drain) for downstream facing port 3 input — function of the pin when used as an input is given in Table 8 GRN7_N 65 I/O output — green LED port indicator (open-drain) for downstream facing port 7 input — function of the pin when used as an input is given in Table 9 AMB7_N 66 I/O output — amber LED port indicator (open-drain) for downstream facing port 7 input — function of the pin when used as an input is given in Table 8 GRN2_N 67 I/O output — green LED port indicator (open-drain) for downstream facing port 2 input — function of the pin when used as an input is given in Table 9 AMB2_N 68 I/O output — amber LED port indicator (open-drain) for downstream facing port 2 input — function of the pin when used as an input is given in Table 8 VREF(5V0) 69 - reference voltage (5 V ± 5 %); used to power internal pull-up resistors of PSWn_N pins and also for the analog overcurrent detection VCC3 70 - digital supply voltage 3 (3.3 V) Table 2: Pin description[1]…continued Symbol[2] Pin Type Description |
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