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STW4811MBRA/LF 数据表(PDF) 28 Page - STMicroelectronics |
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STW4811MBRA/LF 数据表(HTML) 28 Page - STMicroelectronics |
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28 / 86 page  STw4811M/STw4811N Functional description 27/85 USB interrupt source register USB interrupt source register indicates the current state of the signals that can generate an interrupt. USB latch register USB interrupt latch register indicates which source has generated an interrupt. Table 13. USB Interrupt source register (address = 08h) 7 65432 10 cr_int bdis_acon id_float dn_hi id_gnd_ forced dp_hi sess_vld vbus_vld RRRRR RRR 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 5 id_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 < 2V 2 V < Session valid comparator threshold 0 0 vbus_vld 0 1 A-device VBUS valid comparator threshold < 4.4V A-device VBUS valid comparator threshold > 4.4V 0 Table 14. USB interrupt latch registers (address = 0Ah set and 0Bh clearh) Register 76543 210 Bit name cr_int bdis_ acon id_float dn_hi id_gnd_ forced dp_hi sess_ vld vbus_ vld Default 00000 000 Type R/W R/W R/W R/W R/W R/W R/W R/W |
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