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STA333W датащи(PDF) 37 Page - STMicroelectronics |
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STA333W датащи(HTML) 37 Page - STMicroelectronics |
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37 / 50 page ![]() DocID13365 Rev 3 37/50 STA333W Register description 50 6.9 Reserved registers (addr 0x2E, 0x2F, 0x30, 0x31) These registers are not to be used. 6.10 Postscale registers (addr 0x32, 0x33) Postscale The STA333W provides one additional multiplication after the last interpolation stage and the distortion compensation on each channel, which can be used to limit the maximum modulation index and therefore the peak current through the power device. The register values represent an 8-bit signed fractional number. This number is extended to a 24-bit number, by adding zeros to the right, and then directly multiplied by the data on that channel. An independent postscale is provided for each channel but all channels can use channel 1 postscale factor by setting the postscale link bit. By default, all postscale factors are set to 0x7F (pass-through). 2RO - OCWARN Overcurrent warning: 0: warning 1: normal operation 3RO - OCFAULT Overcurrent fault: 0: fault detected 1: normal operation 4 --- Reserved 5 RO - UVFAULT Undervoltage warning: 0: VCCx below lower voltage threshold 1: normal operation 6RO - FAULT Power bridge fault: 0: fault detected 1: normal operation 7 RO - PLLUL PLL lock: 0: locked 1: not locked Table 45. Status bits description (continued) Bit R/W RST Name Description D7 D6 D5 D4 D3 D2 D1 D0 C1PS7 C1PS6 C1PS5 C1PS4 C1PS3 C1PS2 C1PS1 C1PS0 01111111 D7 D6 D5 D4 D3 D2 D1 D0 C2PS7 C2PS6 C2PS5 C2PS4 C2PS3 C2PS2 C2PS1 C2PS0 01111111 |
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