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STW4810 数据表(PDF) 21 Page - STMicroelectronics |
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STW4810 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 72 page  STw4810 4 Functional description Rev3 21/72 USB interrupt source register USB latch register USB interrupt latch register bits indicate which sources have generate an interrupt. Table 12. USB Interrupt source register (address = 08h) Register 765 432 10 Bit name cr_int bdis_ acon id_float dn_hi id_gnd_ forced dp_hi sess_vld vbus_vld Type RRR RRR RR Bits Name Value Settings Default 7cr_int 0 1 Inactive DP ball is above the carkit interrupt threshold 0 6 bdis_acon 0 1 Inactive Set when bdis_acon_en is set, and transceiver asserts dp_pullup after detecting B-device disconnect. 0 5id_float 0 1 Inactive ID ball floating 0 4 dn_hi 0 1 Inactive DN ball is high 0 3 id_gnd_forced 0 1 Inactive ID ball grounded 0 2 dp_hi 0 1 Inactive DP asserted during SRP, 0 1 sess_vld 0 1 Session valid comparator threshold <0.8V or >4.4V 0.8V < Session valid comparator threshold < 4.4V 0 0 vbus_vld 0 1 A-device VBUS valid comparator threshold <4.4V A-device VBUS valid comparator threshold >4.4V 0 Table 13. USB interrupt latch registers (address = 0Ah set and 0Bh clearh) Register 765 432 10 Bit name cr_int bdis_ acon id_float dn_hi id_gnd_ forced dp_hi sess_vld vbus_vld Default 000 000 00 Type R/W R/W R/W R/W R/W R/W R/W R/W |
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