CS4202_05 Datasheet, PDF (3/66 Pages) Cirrus Logic – Audio Codec ’97 with Headphone Amplifier

CS4202
4.4 PC_BEEP Volume Register (Index 0Ah) .......................................................................... 24
4.5 Phone Volume Register (Index 0Ch) ................................................................................ 24
4.6 Microphone Volume Register (Index 0Eh)........................................................................ 25
4.7 Analog Mixer Input Gain Registers (Index 10h - 18h) ...................................................... 26
4.8 Input Mux Select Register (Index 1Ah) ............................................................................. 27
4.9 Record Gain Register (Index 1Ch) ................................................................................... 28
4.10 General Purpose Register (Index 20h) ......................................................................... 29
4.11 Powerdown Control/Status Register (Index 26h) ........................................................... 30
4.12 Extended Audio ID Register (Index 28h) ........................................................................ 31
4.13 Extended Audio Status/Control Register (Index 2Ah) .................................................... 32
4.14 Audio Sample Rate Control Registers (Index 2Ch - 32h) ............................................... 33
4.15 S/PDIF Control Register (Index 3Ah) ............................................................................. 34
4.16 Extended Modem ID Register (Index 3Ch) .................................................................... 35
4.17 Extended Modem Status/Control Register (Index 3Eh) ................................................. 35
4.18 GPIO Pin Configuration Register (Index 4Ch) ................................................................ 35
4.19 GPIO Pin Polarity/Type Configuration Register (Index 4Eh) .......................................... 36
4.20 GPIO Pin Sticky Register (Index 50h) ............................................................................ 36
4.21 GPIO Pin Wakeup Mask Register (Index 52h) ............................................................... 37
4.22 GPIO Pin Status Register (Index 54h)............................................................................ 37
4.23 AC Mode Control Register (Index 5Eh) .......................................................................... 37
4.24 Misc. Crystal Control Register (Index 60h) ..................................................................... 39
4.25 Serial Port Control Register (Index 6Ah) ........................................................................ 40
4.26 BIOS-Driver Interface Control Registers (Index 70h - 72h) ............................................ 41
4.27 BIOS-Driver Interface Status Register (Index 7Ah) ........................................................ 41
4.28 Vendor ID1 Register (Index 7Ch) ................................................................................... 42
4.29 Vendor ID2 Register (Index 7Eh) ................................................................................... 42
5. SERIAL DATA PORTS ........................................................................................................... 43
5.1 Overview .......................................................................................................................... 43
5.2 Multi-Channel Expansion ................................................................................................. 43
5.3 Serial Data Formats ......................................................................................................... 44
6. SONY/PHILIPS DIGITAL INTERFACE (S/PDIF) ................................................................... 45
7. EXCLUSIVE FUNCTIONS ...................................................................................................... 45
8. POWER MANAGEMENT ....................................................................................................... 46
8.1 AC ’97 Reset Modes ........................................................................................................ 46
8.1.1 Cold Reset .......................................................................................................... 46
8.1.2 Warm Reset ........................................................................................................ 46
8.1.3 New Warm Reset ................................................................................................ 46
8.1.4 Register Reset .................................................................................................... 46
8.2 Powerdown Controls ....................................................................................................... 47
9. CLOCKING ............................................................................................................................. 49
9.1 PLL Operation (External Clock) ....................................................................................... 49
9.2 24.576 MHz Crystal Operation ........................................................................................ 49
9.3 Secondary Codec Operation ........................................................................................... 49
10. ANALOG HARDWARE DESCRIPTION ............................................................................... 51
10.1 Analog Inputs ................................................................................................................. 51
10.1.1 Line Inputs ........................................................................................................ 51
10.1.2 CD Input ............................................................................................................ 51
10.1.3 Microphone Inputs ............................................................................................ 51
10.1.4 PC Beep Input ................................................................................................... 52
10.1.5 Phone Input ....................................................................................................... 52
10.2 Analog Outputs .............................................................................................................. 52
10.2.1 Stereo Outputs .................................................................................................. 52
10.2.2 Mono Output ..................................................................................................... 53
10.3 Miscellaneous Analog Signals ....................................................................................... 53
DS549PP2
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