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AK4121 Dataheets PDF



Part Number AK4121
Manufacturers Asahi Kasei Microsystems
Logo Asahi Kasei Microsystems
Description ASYNCHRONOUS SAMPLE RATE CONVERTER
Datasheet AK4121 DatasheetAK4121 Datasheet (PDF)

ASAHI KASEI www.DataSheet4U.com [AK4121] AK4121 Asynchronous Sample Rate Converter GENERAL DESCRIPTION AK4121 is a stereo asynchronous sample rate converter. The input sample rate ranges from 8kHz to 96kHz. The output sample rate is 32kHz, 44.1kHz, 48kHz or 96kHz. Using the AK4121 simplifies system design, since the AK4121’s internal PLL eliminates the need for a master clock in slave mode. Then the AK4121 is suitable for applications requiring multiple sample rates, such as Car Audio, DVD re.

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ASAHI KASEI www.DataSheet4U.com [AK4121] AK4121 Asynchronous Sample Rate Converter GENERAL DESCRIPTION AK4121 is a stereo asynchronous sample rate converter. The input sample rate ranges from 8kHz to 96kHz. The output sample rate is 32kHz, 44.1kHz, 48kHz or 96kHz. Using the AK4121 simplifies system design, since the AK4121’s internal PLL eliminates the need for a master clock in slave mode. Then the AK4121 is suitable for applications requiring multiple sample rates, such as Car Audio, DVD recorders, and digital audio recording. FEATURES † Stereo asynchronous sample rate converter † Input sample rate range (FSI): 8kHz to 96kHz † Output sample rate (FSO): 32kHz/44.1kHz/48kHz/96kHz † Input to output Sample rate ratio: FSO/FSI = 0.33 to 6 † THD+N: –113dB † I/F format: MSB justified, LSB justified (24/20/16bit) and I2S † Clock for Master mode: 256/384/512/768fso † De-emphasis filter: 32kHz/44.1kHz/48kHz † SRC Bypass mode † Soft Mute function † Power Supply: VDD: 3.0 to 3.6V, TVDD: 3.0 to 5.5V (for input tolerant) † Ta: –40 to +85°C PDN DEM0 DEM1 SMUTE TVDD VDD DVSS (MCLK) SDTI ILRCK IBICK SDTO OLRCK OBICK Serial Audio I/F De-em filter Sample Rate Converter soft mute Serial Audio I/F CMODE2 AVSS FILT PLL CMODE1 CMODE0 IDIF2 IDIF1 IDIF0 ODIF1 ODIF0 MS0191-E-03 -1- 2004/08 ASAHI KASEI www.DataSheet4U.com [AK4121] „ Ordering Guide AK4121VF AKD4121 −40 ∼ +85°C 24pin VSOP (0.65mm pitch) Evaluation Board for AK4121 „ Pin Layout FILT AVSS PDN SMUTE DEM0 DEM1 ILRCK IBICK SDTI IDIF0 IDIF1 IDIF2 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VDD DVSS TVDD MCLK OLRCK OBICK SDTO ODIF1 ODIF0 CMODE2 CMODE1 CMODE0 Top View „ Major Difference between AK4120 and AK4121 Items MCLK Input AK4120 Needed (supports 256/512fs) AK4121 NOT Needed (Slave mode) / Needed (Master Mode: supports 256/384/512/768fs) 96kHz 3.0V ~ 3.6V O O O X X Input sample rate (max) Vdd Input 5V Tolerant De-emphasis Filter Soft Mute Digital Volume Digital Mixer 48kHz 2.7V ~ 3.6V X X X O O MS0191-E-03 -2- 2004/08 ASAHI KASEI www.DataSheet4U.com [AK4121] PIN/FUNCTION No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pin Name FILT AVSS PDN SMUTE DEM0 DEM1 ILRCK IBICK SDTI IDIF0 IDIF1 IDIF2 CMODE0 CMODE1 CMODE2 ODIF0 ODIF1 SDTO OBICK OLRCK MCLK TVDD DVSS VDD I/O O I I I I I I I I I I I I I I I I O I/O I/O I I I I Function Loop-Filter Pin for PLL Analog Ground Pin Power-Down pin When “L”, the AK4121 is powered-down and reset. Soft Mute Pin De-emphasis Filter Control Pin #0 De-emphasis Filter Control Pin #1 L/R Clock Pin for Input Audio Serial Data Clock Pin for Input Audio Serial Data Input Pin Input Data Format pin #0 Input Data Format pin #1 Input Data Format pin #2 Clock Mode Select Pin #0 Clock Mode Select Pin #1 Clock Mode Select Pin #2 Output Data Format pin #0 Output Data Format pin #1 Audio Serial Data Output Pin Audio Serial Data Clock Pin for Output L/R Clock Pin for Output Master Clock Pin for Output Input Buffer Power Suppl.


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