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LTC4215CUFD-2 датащи(PDF) 21 Page - Linear Technology |
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LTC4215CUFD-2 датащи(HTML) 21 Page - Linear Technology |
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21 / 28 page ![]() LTC4215/LTC4215-2 21 4215fe APPLICATIONS INFORMATION Alert Response Protocol When any of the fault bits in FAULT register D are set, an optional bus alert is generated if the appropriate bit in the ALERT register B is also set. If an alert is enabled, the corresponding fault causes the ALERT pin to pull low. After the bus master controller broadcasts the Alert Response Address, the LTC4215 responds with its address on the SDA line and then release ALERT as shown in Figure 11. The ALERT line is also released if the device is addressed by the bus master. The ALERT signal is not pulled low again until the FAULT register indicates a different fault has occurred or the original fault is cleared and it occurs again. Note that this means repeated or continuing faults do not generate alerts until the associated FAULT register bit has been cleared. Table 1A. LTC4215 Device Addressing (UH24 Package) DESCRIPTION DEVICE ADDRESS DEVICE ADDRESS LTC4215UH ADDRESS PINS h 76543210 ADR2 ADR1 ADR0 Mass Write BE 10111110 X X X Alert Response 19 00011001 X X X 0 80 1000000 X L NC L 1 82 1000001 X L H NC 2 84 1000010 X L NC NC 3 86 1000011 X L NC H 4 88 1000100 X LLL 5 8A 1000101 X L H H 6 8C 1000110 X L L NC 7 8E 1000111 X L L H 8 90 1001000 X NC NC L 9 92 1001001 X NC H NC 10 94 1001010 X NC NC NC 11 96 1001011 X NC NC H 12 98 1001100 X NC L L 13 9A 1001101 X NC H H 14 9C 1001110 X NC L NC 15 9E 1001111 X NC L H 16 A0 1010000 X H NC L 17 A2 1010001 X H H NC 18 A4 1010010 X H NC NC 19 A6 1010011 X H NC H 20 A8 1010100 X H LL 21 AA 1010101 X H H H 22 AC 1010110 X H L NC 23 AE 1010111 X H L H 24 B0 1011000 X L H L 25 B2 1011001 X NC H L 26 B4 1011010 X H H L |
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