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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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CS8416-CSZ Arkusz danych(PDF) 45 Page - Cirrus Logic |
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CS8416-CSZ Arkusz danych(HTML) 45 Page - Cirrus Logic |
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45 / 60 page  DS578F3 45 CS8416 14.16 OMCK/RMCK Ratio (18h) This register allows the calculation of the incoming sample rate by the host microcontroller from the equation ORR=Fso/Fsi. The Fso is determined by OMCK, whose frequency is assumed to be 256*Fso. ORR is rep- resented as an unsigned 2-bit integer and a 6-bit fractional part. The value is meaningful only after the PLL has reached lock. For example, if the OMCK is 12.288 MHz, Fso would be 48 kHz (48 kHz = 12.288 MHz/256). Then, if the input sample rate is also 48 kHz, you would get 1.0 from the ORR register (The value from the ORR register is hexadecimal, so the actual value you will get is 40h). If FSO/FSI > 3 63/64, ORR will saturate at the value FFh. Also, there is no hysteresis on ORR. Therefore a small amount of jitter on either clock can cause the LSB ORR[0] to oscillate. ORR[7:6] - Integer part of the ratio (Integer value=Integer(SRR[7:6])). ORR[5:0] - Fractional part of the ratio (Fraction value=Integer(SRR[5:0])/64). 14.17 Channel Status Registers (19h - 22h) 14.18 IEC61937 PC/PD Burst Preamble (23h - 26h) 14.19 CS8416 I.D. and Version Register (7Fh) ID[3:0] - ID code for the CS8416. Permanently set to 0010 VER[3:0] = 0001 (revision A) VER[3:0] = 0010 (revision B) VER[3:0] = 0011 (revision C) VER[3:0 ] = 0111 (revision D) VER[3:0] = 1111 (revision E) 76543210 ORR7 ORR6 ORR5 ORR4 ORR3 ORR2 ORR1 ORR0 19h Channel A Status Byte 0 AC0[7] AC0[6] AC0[5] AC0[4] AC0[3] AC0[2] AC0[1] AC0[0] 1Ah Channel A Status Byte 1 AC1[7] AC1[6] AC1[5] AC1[4] AC1[3] AC1[2] AC1[1] AC1[0] 1Bh Channel A Status Byte 2 AC2[7] AC2[6] AC2[5] AC2[4] AC2[3] AC2[2] AC2[1] AC2[0] 1Ch Channel A Status Byte 3 AC3[7] AC3[6] AC3[5] AC3[4] AC3[3] AC3[2] AC3[1] AC3[0] 1Dh Channel A Status Byte 4 AC4[7] AC4[6] AC4[5] AC4[4] AC4[3] AC4[2] AC4[1] AC4[0] 1Eh Channel B Status Byte 0 BC0[7] BC0[6] BC0[5] BC0[4] BC0[3] BC0[2] BC0[1] BC0[0] 1Fh Channel B Status Byte 1 BC1[7] BC1[6] BC1[5] BC1[4] BC1[3] BC1[2] BC1[1] BC1[0] 20h Channel B Status Byte 2 BC2[7] BC2[6] BC2[5] BC2[4] BC2[3] BC2[2] BC2[1] BC2[0] 21h Channel B Status Byte 3 BC3[7] BC3[6] BC3[5] BC3[4] BC3[3] BC3[2] BC3[1] BC3[0] 22h Channel B Status Byte 4 BC4[7] BC4[6] BC4[5] BC4[4] BC4[3] BC4[2] BC4[1] BC4[0] 23h Burst Preamble PC Byte 0 PC0[7] PC0[6] PC0[5] PC0[4] PC0[3] PC0[2] PC0[1] PC0[0] 24h Burst Preamble PC Byte 1 PC1[7] PC1[6] PC1[5] PC0[4] PC1[3] PC1[2] PC1[1] PC1[0] 25h Burst Preamble PD Byte 0 PD0[7] PD0[6] PD0[5] PC0[4] PD0[3] PD0[2] PD0[1] PD0[0] 26h Burst Preamble PD Byte 1 PD1[7] PD1[6] PD1[5] PD1[4] PD1[3] PD1[2] PD1[1] PD1[0] 76543210 ID3 ID2 ID1 ID0 VER3 VER2 VER1 VER0 |
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