ak4387 AKM Semiconductor, Inc., ak4387 Datasheet
ak4387
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ak4387 Summary of contents
Page 1
... THD+N performance. The AK4387 integrates a combination of SCF and CTF filters increasing performance for systems with excessive clock jitter. The 24 Bit word length and 192kHz sampling rate make this part ideal for a wide range of applications including DVD-Audio. The AK4387 is offered in a space saving 16pin TSSOP package. ...
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... ASAHI KASEI Ordering Guide -20 ∼ +85°C AK4387ET AKD4387 Evaluation Board for AK4387 Pin Layout MCLK BICK SDTI LRCK RSTN CSN CCLK CDTI Compatibility with AK4384 1. Function Functions THD+N Output Voltage Slow Roll-Off Filter Mode Setting Zero Data Detect Pin 2. Pin Configuration ...
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... Audio Serial Data Clock Pin Audio Serial Data Input Pin L/R Clock Pin Reset Mode Pin When at “L”, the AK4387 is in the power-down mode and is held in reset. The AK4387 must be reset once upon power-up. Chip Select Pin Control Data Clock Pin ...
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... Symbol min 24 [AK4387] Typ max Units 24 Bits -90 - 106 dB 106 dB 100 dB 0.2 0.5 dB 100 - ppm/°C 2.95 3 ...
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... CSN “↓” to CCLK “↑” CCLK “↑” to CSN “↑” Reset Timing RSTN Pulse Width Note 11. BICK rising edge must not occur at the same time as LRCK edge. Note 12. The AK4387 can be reset by bringing RSTN pin = “L”. MS0429-E-00 DC CHARACTERISTICS Symbol min VIH 2 ...
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... Timing Diagram MCLK tCLKH LRCK BICK tBCKH LRCK tBLR BICK SDTI MS0429-E-00 1/fCLK tCLKL dCLK=tCLKH x fCLK, tCLKL x fCLK 1/fs tBCK tBCKL Clock Timing tLRB tSDS tSDH Serial Interface Timing - 6 - [AK4387] VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL 2005/09 ...
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... CCLK CDTI C1 CSN CCLK CDTI D3 RSTN MS0429-E-00 tCCKL tCCKH tCDS tCDH C0 R/W WRITE Command Input Timing WRITE Data Input Timing tPD Power-down Timing - 7 - [AK4387] VIH VIL VIH VIL VIH A4 VIL tCSW VIH VIL tCSH VIH VIL VIH VIL VIL 2005/09 ...
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... This is because the device utilizes dynamic refreshed logic internally. The AK4387 should be reset by RSTN pin = “L” after threse clocks are provided. If the external clocks are not present, the AK4387 should be in the power-down mode (RSTN pin = “L”). After exiting reset at power-up etc., the AK4387 is in the power-down mode until MCLK and LRCK are input ...
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... DIF0 SDTI Format 0 0 16bit LSB Justified 0 1 20bit LSB Justified 1 0 24bit MSB Justified 24bit I S Compatible 0 0 24bit LSB Justified Table 7. Audio Data Formats - 9 - [AK4387] BICK 64fs Sampling Speed 768fs 1152fs 24.5760 36.8640 Normal 33.8688 - 36.8640 - - - Double - - - - ...
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... Don’t care Don’t care 23 Figure 2. Mode 1,4 Timing Don’t care 23 22 Figure 3. Mode 2 Timing - 10 - [AK4387 Rch Data ...
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... Table 8. De-emphasis Filter Control (Normal Speed Mode) Output Volume The AK4387 includes channel independent digital output volumes (ATT) with 256 levels at linear step including MUTE. These volumes are in front of the DAC and can attenuate the input data from 0dB to –48dB and mute. When changing levels, transitions are executed via soft changes ...
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... ASAHI KASEI Zero Detection The AK4387 has channel-independent zeros detect function. When the input data at each channel is continuously zeros for 8192 LRCK cycles, DZF pin of each channel goes to “H”. DZF pin of each channel immediately goes to “L” if input data of each channel is not zero after going DZF “H”. If RSTN bit is “0”, DZF pins of both channels go to “H”. DZF pin of both channels go to “ ...
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... ASAHI KASEI System Reset The AK4387 should be reset once by bringing RSTN pin = “L” upon power-up. The AK4387 is powered up and the internal timing starts clocking by LRCK “↑” after exiting reset and power down state by MCLK. The AK4387 is in the power-down mode until MCLK and LRCK are input ...
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... There is a delay, 3~4/fs from RSTN bit “0” to the internal RSTN bit “0”, and 2~3/fs from RSTN bit “1” to the internal RSTN bit “1”. MS0429-E-00 3~4/fs (6) 2~3/fs (6) Digital Block Power-down “0” data GD (3) (2) (3) (4) Don’t care Figure 7. Reset Sequence Example - 14 - [AK4387] Normal Operation (1) GD 2/fs(5) 2005/09 ...
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... R/W C1 *The AK4387 does not support the read command and chip address. C1/0 and R/W are fixed to “011” *When the AK4387 is in the power down mode (RSTN pin = “L”) or the MCLK is not provided, writing into the control register is inhibited. Register Map Addr ...
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... Zero detect function can be disabled by DZFE bit “0”. In this case, the DZF pins of both channels are always “L”. MS0429-E- DIF2 DIF1 DFS1 DFS0 [AK4387 DIF0 PW RSTN DEM1 DEM0 SMUTE 2005/09 ...
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... ATT = 20 log (ATT_DATA / 255) [dB] 10 00H: Mute MS0429-E- INVL INVR ATT6 ATT5 ATT4 ATT3 ATT6 ATT5 ATT4 ATT3 [AK4387 DZFB ATT2 ATT1 ATT0 ATT2 ATT1 ATT0 2005/09 ...
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... AVDD 14 4 LRCK VSS 13 AK4387 5 RSTN VCOM 12 6 CSN AOUTL 11 CCLK 7 AOUTR 10 8 CDTI [AK4387] Optional External Mute Circuits 10 Analog + Supply 5V 10u 0.1u 10u + Lch Out Rch Out Optional External Mute Circuits Analog + Supply 5V 10u 0.1u 10u + Lch Out Rch Out 2005/09 ...
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... DC offsets on analog outputs are eliminated by AC coupling since analog outputs have DC offsets of VCOM + a few mV. Figure 11 shows an example of the external LPF with 2Vrms output. 22u AOUT 22k nd Figure 11. External 2 order LPF Circuit Example (using op-amp with dual power supplies) MS0429-E-00 390p 3.3k 3.3k +Vop 3.0k 3.9k -Vop 470p fc=108.6kHz, Q=0.706, g=-0.08dB at 40kHz - 19 - [AK4387] Analog Out 2005/09 ...
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... M Seating Plane NOTE: Dimension "*" does not include mold flash. Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0429-E-00 PACKAGE 0.65 Detail A 0.10 Epoxy Cu Solder (Pb free) plate - 20 - [AK4387] 1.05±0.05 0.17±0.05 0.1±0.1 0-10° 2005/09 ...
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... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0429-E-00 MARKING AKM 4387ET XXYYY Pin #1 indication 1) Date Code : XXYYY (5 digits) 2) XX: Lot# YYY: Date Code Marketing Code : 4387ET 3) Asahi Kasei Logo 4) Revision History Page Contents IMPORTANT NOTICE - 21 - [AK4387] 2005/09 ...