ALC250 Просмотр технического описания (PDF) - Unspecified
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ALC250 Datasheet PDF : 46 Pages
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ALC250 Data Sheet
7.1 DC Characteristics .......................................................................................................................................................... 28
7.1.1 Absolute Maximum Ratings .................................................................................................................................... 28
7.1.2 Threshold Hold Voltage .......................................................................................................................................... 28
7.1.3 Digital Filter Characteristics.................................................................................................................................... 28
7.1.4 S/PDIF output Characteristics ................................................................................................................................. 28
7.2 AC Timing Characteristics.............................................................................................................................................. 29
7.2.1 Cold Reset ............................................................................................................................................................... 29
7.2.2 Warm Reset ............................................................................................................................................................. 29
7.2.3 AC-Link Clocks....................................................................................................................................................... 29
7.2.4 Data Output and Input Timing................................................................................................................................. 30
7.2.5 Signal Rise and Fall Timing .................................................................................................................................... 30
7.2.6 AC-Link Low Power Mode Timing ........................................................................................................................ 31
7.2.7 ATE Test Mode ....................................................................................................................................................... 31
7.2.8 AC-Link IO Pin Capacitance and Loading.............................................................................................................. 31
7.2.9 SPDIF Output .......................................................................................................................................................... 32
8. Analog Performance Characteristics ................................................................................................................................. 33
9. Design Suggestions ............................................................................................................................................................... 35
9.1 Clocking .......................................................................................................................................................................... 35
Low................................................................................................................................................................................... 35
0 (Primary)........................................................................................................................................................................ 35
9.2 AC-Link .......................................................................................................................................................................... 35
9.3 Reset................................................................................................................................................................................ 35
9.4 CD Input.......................................................................................................................................................................... 36
9.5 Odd Addressed Register Access ..................................................................................................................................... 36
9.6 Power-down Mode.......................................................................................................................................................... 36
9.7 Test Mode ....................................................................................................................................................................... 36
9.7.1 ATE In Circuit Test Mode....................................................................................................................................... 36
9.7.2 Vendor Specific Test Mode..................................................................................................................................... 36
9.8 DC Voltage Volume Control .......................................................................................................................................... 37
9.9 POWER OFF CD Function............................................................................................................................................. 38
10. Application Circuit ............................................................................................................................................................ 39
11. Mechanical Dimensions ..................................................................................................................................................... 41
11. Mechanical Dimensions ..................................................................................................................................................... 41
Two Channel AC’97 2.3 Audio Codec
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