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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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900844 датащи(PDF) 39 Page - Freescale Semiconductor, Inc |
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900844 датащи(HTML) 39 Page - Freescale Semiconductor, Inc |
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39 / 118 page  Analog Integrated Circuit Device Data Freescale Semiconductor 39 900844 FUNCTIONAL DEVICE OPERATION SYSTEM CONTROL INTERFACE Figure 15. 7-Bit VID Code vs. VCC/VNN Output Voltage As explained previously, the output voltage setting for the VCC and VNN regulators can be set via the VID/VIDEN pins from the CPU, or by programming the VNNLATCH and VCCLATCH registers through the SPI interface via the platform controller hub. Figure 16 shows the relationship between the VID/VIDEN signals, the DVPxVRD bit in the Latch registers, and the VRCOMP output signal. The figure shows VCC as an example, but is also applicable to VNN The DVPxVRD bit in the VNNLATCH and VCCLATCH registers controls the select input to the multiplexer. If the DVPxVRD bit is set to a '0', the regulator uses the VID/VIDEN pins from the CPU, and if the DVPxVRD bit is set to a '1', the regulator uses the VNNLATCH and VCCLATCH registers to set the output voltage. When the DVPxVRD bit is set to a '0', any changes to the VNNLATCH and VCCLATCH registers should be ignored. When the DVPxVRD bit is set to a '1', any changes on the VID/VIDEN pins from the CPU should be ignored. As soon as the DVPxVRD bit is set to a '1', the regulator switches from using the VID/VIDEN pins to using the VCCLATCH register, and the output voltage of the regulator changes to what the VCCLATCH register is set. Figure 16 shows how the PMIC controls the VRCOMP signal. The PMIC toggles the VRCOMP signal any time the DVPxVRD bit is set to a '1' and the output voltage of the VNN or the VCC regulator changes. If the output voltage of the VCC/VNN regulator changes and the DVPxVRD bit is set to a '0', the VRCOMP signal should not toggle. VRCOMP only toggles for changes to VCC and VNN through the SPI registers. 6543210 6 543210 6543210 6 543210 0000000 1.2000 0 100000 1.1000 1000000 0.7000 1 100000 0.3000 0000001 1.2000 0 100001 1.0875 1000001 0.6875 1 100001 OFF 0000010 1.2000 0 100010 1.0750 1000010 0.6750 1 100010 OFF 0000011 1.2000 0 100011 1.0625 1000011 0.6625 1 100011 OFF 0000100 1.2000 0 100100 1.0500 1000100 0.6500 1 100100 OFF 0000101 1.2000 0 100101 1.0375 1000101 0.6375 1 100101 OFF 0000110 1.2000 0 100110 1.0250 1000110 0.6250 1 100110 OFF 0000111 1.2000 0 100111 1.0125 1000111 0.6125 1 100111 OFF 0001000 1.2000 0 101000 1.0000 1001000 0.6000 1 101000 OFF 0001001 1.2000 0 101001 0.9875 1001001 0.5875 1 101001 OFF 0001010 1.2000 0 101010 0.9750 1001010 0.5750 1 101010 OFF 0001011 1.2000 0 101011 0.9625 1001011 0.5625 1 101011 OFF 0001100 1.2000 0 101100 0.9500 1001100 0.5500 1 101100 OFF 0001101 1.2000 0 101101 0.9375 1001101 0.5375 1 101101 OFF 0001110 1.2000 0 101110 0.9250 1001110 0.5250 1 101110 OFF 0001111 1.2000 0 101111 0.9125 1001111 0.5125 1 101111 OFF 0010000 1.2000 0 110000 0.9000 1010000 0.5000 1 110000 OFF 0010001 1.2000 0 110001 0.8875 1010001 0.4875 1 110001 OFF 0010010 1.2000 0 110010 0.8750 1010010 0.4750 1 110010 OFF 0010011 1.2000 0 110011 0.8625 1010011 0.4625 1 110011 OFF 0010100 1.2000 0 110100 0.8500 1010100 0.4500 1 110100 OFF 0010101 1.2000 0 110101 0.8375 1010101 0.4375 1 110101 OFF 0010110 1.2000 0 110110 0.8250 1010110 0.4250 1 110110 OFF 0010111 1.2000 0 110111 0.8125 1010111 0.4125 1 110111 OFF 0011000 1.2000 0 111000 0.8000 1011000 0.4000 1 111000 OFF 0011001 1.1875 0 111001 0.7875 1011001 0.3875 1 111001 OFF 0011010 1.1750 0 111010 0.7750 1011010 0.3750 1 111010 OFF 0011011 1.1625 0 111011 0.7625 1011011 0.3625 1 111011 OFF 0011100 1.1500 0 111100 0.7500 1011100 0.3500 1 111100 OFF 0011101 1.1375 0 111101 0.7375 1011101 0.3375 1 111101 OFF 0011110 1.1250 0 111110 0.7250 1011110 0.3250 1 111110 OFF 0011111 1.1125 0 111111 0.7125 1011111 0.3125 1 111111 OFF VID VID (V) VID VID (V) VID VID (V) VID VID (V) |
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