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L9965T Datasheet(PDF) 33 Page - STMicroelectronics |
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L9965T Datasheet(HTML) 33 Page - STMicroelectronics |
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33 / 62 page  Fault type Assertion condition IC reaction to assertion Release condition Maskable FIFO RX FULL Write request of received VIF frame to full FIFO RX • FIFO_RX_FULL = 1 in GEN_STATUS1 • The FLT pin and the SPI FAULT is asserted in NORMAL if MSK_FIFO_RX_FULL = 0 in GEN_CFG3 Clear on read • FIFO_RX_FULL status bit non maskable • FLT pin and the SPI FAULT maskable by bit MSK_FIFO_RX_F • ULL in GEN_CFG3 FIFO RX EMPTY Read request to empty FIFO RX • FIFO_RX_EMPTY = 1 in GEN_STATUS1 • Next SPI MISO frame is RX FIFO EMPTY (see Section 5.8.4) Clear on read • FIFO_RX_EMPTY status bit non maskable 1. For burst read, see Section 5.8.2.2 5.7.2.2 Electrical parameters Table 34. VIF electrical parameters Symbol Parameter Test conditions Min Typ Max Unit Pin NVIF_STACK Number of addressable devices stacked in a single daisy-chain (including L9965T, L9965C) Application information. There are 64 available addresses, 5 of which are reserved for broadcast commands 1 59 devices ISOP_0, ISOM_0, ISOP_1, ISOM_1 LVIF_WIRE Maximum length of twisted pair cables between two VIF nodes, using the recommended AWGVIF_WIRE size and supporting operation in high frequency Application information 10 m ISOP_0, ISOM_0, ISOP_1, ISOM_1 VVIF_VCM ISO port positive/negative terminals common mode voltage Tested in production 0 V5V/2 V5V V ISOP_0, ISOM_0, ISOP_1, ISOM_1 VTX_DIFF_OUT TX output differential pulse Tested in production using recommended RTERM 0 V5V V ISOP_0, ISOM_0, ISOP_1, ISOM_1 TVIF_START Delay between NCS pin rising and start of VIF transmission Guaranteed by SCAN 1.3 µs ISOP_0, ISOM_0, ISOP_1, ISOM_1 TVIF_BIT VIF Bit time Guaranteed by SCAN 230 250 270 ns ISOP_0, ISOM_0, ISOP_1, ISOM_1 TVIF_LATENCY VIF Insertion Delay. Latency introduced by the insertion of one IC in the daisy chain Guaranteed by SCAN 115 125 135 ns ISOP_0, ISOM_0, ISOP_1, ISOM_1 VRX_DIFF_TH_POS RX differential threshold positive Tested in production 80 200 400 mV ISOP_0, ISOM_0, ISOP_1, ISOM_1 VRX_DIFF_TH_NEG RX differential threshold negative Tested in production -400 -200 -80 mV ISOP_0, ISOM_0, ISOP_1, ISOM_1 L9965T/L9965TS Functional description DS14987 - Rev 1 page 33/62 |
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