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WM8255 数据表(PDF) 39 Page - Cirrus Logic |
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WM8255 数据表(HTML) 39 Page - Cirrus Logic |
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39 / 49 page ![]() WM8255 Production Data w PD, Rev 4.7, August 2013 39 MCLK VSMP VINP OP[3:0] (DEL = 00) 16.5 MCLK PERIODS OP[3:0] (DEL = 01) OP[3:0] (DEL = 10) OP[3:0] (DEL = 11) A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D A B C D Figure 32 Mode 3 Operation DEVICE REVISION CODES To read the device revision code the test registers must be accessed. Table 7 defines the method: DEVICE REVISION CODE Address Data Comment 0x01 0xA3 This will put the part into test configuration mode. Any address will now point to the extended page reconfiguration register 0x27 Read Read all eight bits of this register. Bit[7:1] contain the revision code information, Bit[0] should be ignored 0x01 0x23 This will take the part back into normal operating mode. Table 7 Revision Code Note: For Rev C devices it will read ‘01’ |
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