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UM0934 Datasheet(PDF) 94 Page - STMicroelectronics |
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UM0934 Datasheet(HTML) 94 Page - STMicroelectronics |
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94 / 113 page  Extended functions UM0934 94/113 Doc ID 17389 Rev 2 7.1.2 MAC reconfiguration Table 150 lists all the MAC settings managed by the auto reconfiguration feature. 7.2 Alarm management The ST7570 features advanced alarm messages management, aimed at: ● Αvoiding false alarm detections, through the programmable alarm filtering used in reception ● Αvoiding echo effects, by ignoring all the alarms that can occur immediately after alarm transmission, reception (or repetition in MAC mode). Alarms can be used in both PHY and MAC modes. 7.2.1 Alarm transmission The host can request the ST7570 transmitting burst of NTX alarms by using the command CMD_AlarmRequest. As soon as the transmission is completed, the ST7570 ignores all the alarms that may occur in the next NREJ time-slots. The confirmation to the alarm request (CMD_AlarmConfirm) is generated immediately after the first alarm burst. If other CMD_AlarmRequests are sent during the alarm transmission or the reject window, the ST7570 provides an immediate positive confirmation but it does not send any additional alarms. Table 150. MIB objects checked after reset event in MAC mode MAC settings MIB object MAC address 0001h (local MAC address and the Initiator MAC address) Initiator MAC address 0001h (local MAC address and the Initiator MAC address) MAC group address 0005h (MAC group addresses) Repeater state 000Bh (TIC selector and repeater state) FIMA 0000h (first and last initiator address, FIMA/LIMA) LIMA 0000h (first and last initiator address, FIMA/LIMA) Synchronization confirm timeout 0002h (timeout synchro confirmation) Not ok timeout 0003h (timeout frame not OK) Not addressed timeout 0004h (timeout frame not addressed) Intelligent synchronization timeout 0009h (timeout intelligent synchronization) Disable frame type check 0008h (disable frame type check and disable CRC check) Disable CRC check 0008h (disable frame type check and disable CRC check) Auto synchronization reject 0015h (auto synchro reject) Repeater call threshold 000Ch (RC threshold) Intelligent synchronization threshold 0016h (intelligent synchronization threshold) Frame indicator 0012h (frame indicator) Smart-phase detection 0013h (smart-phase detection) |
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