【经验】USB转I²S数字音频桥芯片CP2615的供电接法详解
SILICON LABS的CP2615是USB转I²S数字音频桥芯片，它提供了一个完整的即插即用接口解决方案，可以方便地实现USB转音频的功能。CP2615芯片内部集成有电压调节器，输出的电压直接提供给芯片的内核，使用它可节省外部的电压调节芯片，节约成本。在设计芯片的供电时有三种不同的电源接法，第一种是USB直接供电，第二种是电压调节器供电，第三种是直接给芯片的VDD供电。下面就介绍一下这三种接法。
首先，我们看一下与电源相关的几个引脚，Regin引脚，这是内部电压调节器的输入引脚，输入电压范围是2.7V~5.25V，输出电压典型值为3.3V。VDD引脚，这是芯片的数字电源引脚，直接给芯片内核供电，输入电压范围是2.7V~3.6V. VBUS引脚，这里要特别注意，对于USB供电端来说，VBUS是一个电源输出引脚，但对于CP2615来说，它只是一个数字信号的输入引脚，是用于检测USB接口是否有连接，它不是CP2615的电源输入引脚。
第一种供电方式是使用USB供电，这也是USB外设最简单的一种供电方式，如下图，这种接法中要将VBUS引脚与Regin引脚并联，直接接到USB连接器的VBUS端。此时，是使用芯片的电压调节器给芯片供电，为了保证电源的稳定，要在VDD引脚对GND并联去耦电容，容值按下图进行选择就可以。
另外，两种电源的接法适合在系统中有供电，而且USB不是始终接到主机端，只有在需要信号传输时才连接USB的应用中。在这种应用中VBUS只用于信号的检测，判断是否有接到USB主机端。供电也分为两种，一种是5V供电系统，一种是3V供电系统。
下图是5V供电系统中的电源接法，由于芯片内部有电压调节器，可以直接由5V供电，所以5V的电源直接接到Regin引脚上，同时在VDD引脚接去耦电容。这时要注意VBUS引脚的连接，在VBUS引脚上要接分压电阻，这是由于VBUS引脚的最大输入电压为VDD+3.6V,使用分压电阻，可以保证在5V系统没有供电的情况下如果直接连接USB端口的情况下VBUS引脚的电压也不会超过3.6V。
最后一种电源接法是在3V系统中供电，这时需要将VDD和Regin引脚并联，再连接到3V的电源上。VBUS引脚同样要接上分压电阻，保证芯片的安全。
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【应用】兼容四大操作系统的USB转I2S桥接芯片解决USB耳机设计难题
Silicon Labs CP2615 USB转接芯片支持44.1kHz和48kHz采样率，16 位和24位立体声数字音频，是中低端耳机理想的低成本解决方案。
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2201181164 Drop shipment site change at ASE Chung-Li
型号- C8051F521A-IM,C8051F974-A-GMR,C8051F381-GQR,RS9116N-SB00-B00-B00,SI7020-A20-GM,C8051F920-G-GM,C8051F023-GQ,C8051F920-G-GQ,C8051F587-AM,EFM8BB31F64G-D-QFP32R,EFM8LB11F32ES0-C-QFN24R,EFM8SB20F32G-B-QFN32,C8051F332-GM,C8051F531-C-IM,EZR32HG220F64R61G-C0R,C8051F310-GQR,C8051F011-GQ,C8051F390-A-GMR,C8051F362-C-GM,C8051F132-GQR,C8051F531-C-IT,EFM32GG12B330F512GQ100-AR,C8051F541-IMR,C8051F975-A-GM,CP2201-GMR,EFM32GG11B520F2048GQ100-BR,C8051F394-A-GM,C8051T616-GM,EFM32G840F64G-E-QFN64,EFM8LB11F32ES0-C-QFN24,CPT112S-A02-GU,EFM32GG230F1024G-E-QFN64R,C8051F125-GQ,EFM8UB20F64G-B-QFP48R,EZR32HG320F64R68G-C0R,C8051F585-IM,C8051F230-GQ,CPT112S-A02-GM,C8051F585-IQ,EFM32G230F32G-E-QFN64R,EFM8BB10F2G-A-QFN20,C8051F553-AMR,EM3598-RT,C8051F801-GU,EFM8BB10F2I-A-QFN20R,C8051F124-GQR,SI7054-A20-IMR,C8051F060-GQR,C8051F802-GUR,EFM8BB21F16A-C-QFN20R,EFM8LB12F32ES0-C-QFN24,C8051F043-GQR,SI4461-B1B-FM,EFM32WG880F256-B-QFP100,SI1182-B3-GMR,SI7051-A20-IMR,SI4355-B1A-FM,C8051T604-GSR,C8051F045-GQ,C8051F320-GQ,EFM8LB11F16ES0-C-QFN24R,EFM8SB20F32G-B-QFN24,EZR32HG220F64R69G-C0,EZR32HG320F64R69G-C0,C8051F530A-ITR,EFM32ZG210F32-B-QFN32,C8051F339-GMR,C8051F360-C-GQR,EFM32GG380F512G-E-QFP100R,SI1102-A-GMR,C8051F38C-GQ,EFM32G280F128G-E-QFP100R,SI1012-C-GM2,C8051F133-GQR,C8051F380-GQR,EFM8SB20F32G-B-QFP32,C8051F230-GQR,SI1152-AB00-GM,C8051F38C-GM,EFM8SB20F32G-B-QFN24R,SI1175E2-B2-GM,CF326-SX0261GM,EM3587-RTR,C8051F302-GMR,EFM8SB10F4G-A-QFN20,CP2615-A02-GM,C8051F563-IM,SI4060-B1B-FM,SI4055-C2A-GM,EZR32HG220F64R69G-C0R,C8051F047-GQ,C8051F531A-ITR,C8051F001-GQ,C8051F206-GQR,C8051F563-IQ,EFM32GG12B510F1024IQ100-A,CPT213B-A01-GM,CP2103-GMR,EM260-RTR,EFR32MG21B020F768IM32-BR,C8051F310-GQ,EFM32G880F128G-E-QFP100R,EZR32HG220F64R68G-C0,CPT112S-A02-GMR,C8051F850-C-IMR,EFM32LG230F64G-F-QFN64R,EFM8SB20F64G-B-QFN32R,RS14100-SB00110F-B00-X16,EFM32GG980F1024G-E-QFP100,SI4362-B1B-FM,C8051F301-GMR,EFM8SB10F2G-A-QFN20R,EFM32ZG210F16-B-QFN32,C8051F854-C-GM,C8051F921-G-GMR,C8051F365-C-GMR,SI1141-A11-GMR,C8051F369-C-GM,SI1082-A-GM,C8051F389-B-GM,C8051F389-B-GQ,EFM8UB30F40G-A-QFN20R,EFR32MG21A020F768IM32-BR,SI1000-E-GM2R,C8051F901-D-GMR,SI4063-C2A-GM,C8051F344-GQ,C8051F123-GQR,SI1171I3-B2-GM,EFM32LG230F256G-F-QFN64,C8051F502-IM,C8051F575-IM,SI7023-A20-YM1R,C8051F502-IQ,C8051F550-IMR,EFM32LG280F256G-F-QFP100,SI7023-A20-IM1,C8051F921-G-GM,SI1063-A-GMR,C8051F312-GQ,EFM32LG880F64G-F-QFP100R,EFM32LG880F256G-F-QFP100,SI1141-A11-GM,EFM8LB10F16ES1-C-QFN24R,C8051F587-IM,C8051F320-GQR,C8051F587-IQ,C8051F586-IMR,SI7007-A20-IM1R,C8051F587-IQR,C8051F500-IQ,C8051F500-IM,SI1147-A10-GMR,EFM32GG11B820F2048GQ100-B,C8051F530-C-ATR,C8051F363-C-GQ,C8051F531A-IT,SI1003-E-GM2R,SI4055-B1A-FM,SI1005-E-GM2R,EFM32GG11B310F2048GQ100-BR,C8051F043-GQ,CP2200-GQR,C8051F507-IMR,SI4356-B1A-FMR,EZR32HG320F64R69G-C0R,C8051F531A-IM,EFM32GG940F1024G-E-QFN64,SI1064-A-GM,EFR32BG21A020F1024IM32-BR,SI1175I3-B2-GMR,SI1081-A-GM,C8051F300-GM,C8051F300-GMR,C8051F855-C-GM,SI4461-C2A-GMR,EZR32HG220F64R60G-C0R,C8051F300-GS,EZR32HG220F64R67G-C0,EZR32HG320F64R67G-C0,EFM8UB10F16G-C-QFN20,C8051F981-C-GMR,EM357-RT,C8051F544-IQR,C8051F065-GQ,EFM32LG230F128G-F-QFN64R,C8051F802-GMR,C8051T614-GQR,C8051F220-GQR,EFM8UB20F32G-B-QFN32,C8051F366-C-GQR,C8051F982-C-GMR,EFM8SB10F2G-A-QFN20,C8051F565-IQ,C8051T631-GM,EFR32BG21A010F768IM32-B,C8051T600-GS,EM3585-RTR,C8051F122-GQR,C8051F580-AQ,C8051F542-IMR,C8051T600-GM,C8051F803-GS,C8051F580-AM,EFM32GG230F512G-E-QFN64R,SI4355-C2A-GMR,C8051F530A-IT,C8051F585-IMR,EFR32BG21A010F1024IM32-BR,C8051F990-C-GMR,C8051F508-IMR,C8051F302-GM,C8051F127-GQ,SI1142-M01-GM,EFM32TG840F32-D-QFN64R,C8051F530A-IM,C8051F800-GMR,C8051F586-IQR,SI4010-C2-GSR,C8051F302-GS,EFM8SB20F16G-B-QFN24,C8051F531A-IMR,C8051F986-C-GMR,SI4012-C1001GT,SI4464-B1B-FM,EFM8LB12F64E-C-QFN24R,CP2104-F03-GM,EFM8UB20F32G-B-QFP48,SI1151-AB09-GMR,C8051F067-GQ,SI1064-A-GMR,EFM32GG330F512G-E-QFN64,EFM32LG980F128G-F-QFP100R,C8051F510-IM,SI4010-C2-GTR,C8051F300-GSR,EFM32LG840F256G-F-QFN64,C8051F336-GM,C8051F381-GM,CP2200-GQ,EFR32MG21A020F512IM32-B,EM341-RTR,C8051F121-GQR,C8051F589-IM,SI7020-A20-IM,EFM32LG360F256G-F-CSP81R,C8051F381-GQ,EM3588-RT,C8051F346-GQ,C8051F021-GQ,EFM32GG11B320F2048GQ100-BR,EFM32TG230F32-D-QFN64R,C8051F220-GQ,CP2105P0950FGM,SI4468-A2A-IM,EFM32ZG210F32-B-QFN32R,SI7023-A20-IMR,C8051F34A-GQ,C8051F975-A-GMR,CPT007B-A02-GM,C8051F544-IQ,C8051F524A-IM,C8051F530A-AMR,C8051F221-GQR,C8051F34A-GM,SI1181-B3-GM,C8051T326-GMR,EFM32G880F128G-E-QFP100,EFM8UB20F32G-B-QFP32,SI1144-AAGX-GMR,C8051F569-AM,EFR32BG21B010F768IM32-B,EFM32G200F16G-E-QFN32R,EZR32HG320F32R63G-C0R,EFM8BB10F4I-A-QFN20,EFM32G280F128G-E-QFP100,CPT007B-A02-GU,SI7053-A20-IM,C8051F531-C-AMR,C8051F585-IQR,C8051F313-GMR,C8051F321-GMR,C8051F991-C-GM,SI7021-A20-GM1,EFR32BG21B020F768IM32-B,SI1142-A11-GM,EFM32GG12B310F1024GQ100-AR,C8051F132-GQ,EFR32MG21B010F1024IM32-BR,SI1060-A-GMR,C8051F314-GQR,EFR32MG21A020F512IM32-BR,C8051F120-GQ,SI4464-B1B-FMR,C8051F396-A-GM,C8051F553-IMR,C8051T622-GM,SI4467-A2A-IM,C8051F063-GQ,SI7021-A20-GMR,C8051F567-IQ,SI1151-AB00-GM,EM357-ZRT,C8051F
Silicon Labs（芯科科技） AN721：USBXpress™设备配置和编程指南
型号- CP211X,CP2104-B01-GM,CP2615-A01-GM,CP2615,CP2104-B01-GMR,CP2112-F02-GM,CP2615-A01-GMR,CP2112-F02-GMR,CP2112-F03-GMR,CP2101-GM,CP2108-B03-GM,CP2101-GMR,CP2102-YM1,CP2110,CP2130,CP2108-B01-GM,CP2114,CP2103-GM,CP2112,CP2114-B01-GM,CP2110-F02-GM1R,CP2105,CP2104,CP2104SX0805GMR,CP2110-F02-GM1,CP2109,CP2104-F03-GM,CP210X,CP2108,CP2114-B01-GMR,CP2108-B02-GMR,CP2112-F03-GM,CP2105-F01-GMR,CP2105-F01-GM,CP2102-GMR,CP2110-F01-GM,CP2102-GM,CP2109-A01-GM,CP2110-F01-GMR,CP2130-F01-GM,CP2108-B02-GM,CP2103-GMR,CP2109-A01-GMR,CP2108-B03-GMR,CP2104-F03-GMR,CP2103,CP2102,CP2101
2112141154 Minimum Order Quantity (MOQ) Increase for all IC and SiP Module Products
型号- C8051F521A-IM,SI1061-A-GM,SI1001-E-GM2,ZGM130S037HGN2,C8051F38A-B-GQ,SI7020-A20-GM,C8051F000-GQ,C8051F023-GQ,C8051F920-G-GM,C8051F988-C-GU,C8051F321-GM,C8051F046-GQ,C8051F920-G-GQ,C8051F587-AM,C8051F503-IM,SI7201-B-84-IV,C8051F967-B-GM,C8051F503-IQ,C8051F332-GM,C8051F531-C-IM,C8051F011-GQ,WFM200S022XNN3,C8051F902-D-GU,SI7211-B-00-IV,WFM200S022XNN2,C8051F802-GM,C8051F362-C-GM,SI4022-A0-FT,C8051F531-C-IT,BGM220SC22HNA2,BGX13S22GA-V31,C8051F584-IM,C8051F584-IQ,C8051F975-A-GM,C8051F394-A-GM,SI7005-B-GM1,EFP0108GM20-E,C8051T616-GM,C8051F206-GQ,C8051F802-GU,EFP0108GM20-D,EM3597-RT,C8051F012-GQ,SI4463-C2A-GM,C8051F413-GM,CPT112S-A02-GU,WF200D,WF200C,C8051F125-GQ,C8051F343-GQ,C8051F585-IM,C8051F230-GQ,CPT112S-A02-GM,C8051F585-IQ,SI7210-B-11-IM2,EM3598-RT,C8051F801-GU,SI1034-B-GM3,SIM3C164-B-GM,SI4461-B1B-FM,SI4355-B1A-FM,C8051F345-GQ,C8051F045-GQ,C8051F320-GQ,C8051F398-A-GM,SI7201-B-83-IV,SI4432-B1-FM,SI7022-A20-IM1,SI7201-B-04-IV,SI4438-C2A-GM,SI4455-B1A-FM,C8051F996-C-GM,C8051F38C-GQ,C8051F911-D-GU,SI1012-C-GM2,C8051F996-C-GU,C8051F38C-GM,SI1152-AB00-GM,CF326-SX0261GM,SI1175E2-B2-GM,C8051F911-D-GM,C8051F963-B-GM,C8051F981-C-GM,CP2615-A02-GM,C8051F124-GQ,SI7217-B-01-IV,C8051F563-IM,SI4060-B1B-FM,SI4055-C2A-GM,SI7210-B-12-IM2,C8051F047-GQ,C8051F527A-IM,C8051F001-GQ,C8051F812-GM,SI4421-A0-FT,C8051F563-IQ,CPT213B-A01-GM,C8051F311-GM,C8051F972-A-GM,SI7054-A20-IM,SIM3C146-B-GM,C8051F547-IM,CP2615-A01-GM,SD3503A-CNE3,C8051F310-GQ,SI7211-B-00-IB,C8051F863-C-GS,SI4362-B1B-FM,SI4421-A1-FT,C8051F002-GQ,C8051F854-C-GM,C8051F369-C-GM,C8051F333-GM,SIM3U144-B-GM,SI1082-A-GM,C8051F389-B-GM,EM3585-RT,C8051F013-GQ,C8051F389-B-GQ,C8051F800-GM,SIM3C156-B-GM,SI4063-C2A-GM,C8051F344-GQ,C8051F550-AM,C8051F586-IM,C8051F586-IQ,SI1171I3-B2-GM,C8051F502-IM,C8051F575-IM,C8051F502-IQ,SI7201-B-03-IV,C8051F800-GU,C8051F980-C-GM,SI7023-A20-IM1,C8051F921-G-GM,C8051F312-GQ,C8051F066-GQ,SI1141-A11-GM,SI1143-A11-GM,C8051F587-IM,SI7021-A20-GM,C8051F587-IQ,SI7023-A20-YM1,C8051F335-GM,C8051F500-IQ,SI7204-B-00-FV,SI1153-AB9X-GM,C8051F500-IM,CP2105-F01-GM,C8051F301-GM,EM346-RT,BGM121A256V2,EM250-RT,C8051F363-C-GQ,C8051F347-GQ,C8051F301-GS,C8051F531A-IT,SI4055-B1A-FM,C8051F043-GQ,C8051F531A-IM,SI7210-B-13-IM2,SIM3C144-B-GM,SI7201-B-05-IV,C8051F34B-GQ,C8051F501-IQ,SI1064-A-GM,SI1133-AA00-GM,C8051F501-IM,SIM3C154-B-GM,C8051F300-GM,SI1081-A-GM,C8051F855-C-GM,SI7021-A20-IM,C8051F300-GS,SI4420-D1-FT,SI7201-B-86-IV,C8051F862-C-GS,EM357-RT,C8051F804-GS,C8051F065-GQ,SI4032-B1-FM,SI1014-C-GM2,C8051F382-GQ,SI7201-B-30-IV,SI7201-B-41-IV,CP2400-GM,SI1182-B4-GM,WFM200SS22XNA2,C8051F395-A-GM,C8051F565-IQ,WFM200SS22XNA3,C8051F221-GQ,C8051T631-GM,C8051F020-GQ,C8051T600-GS,CP2400-GQ,C8051F580-AQ,C8051F826-GS,C8051T600-GM,C8051F803-GS,SI7210-B-01-IV,C8051F010-GQ,C8051F580-AM,C8051F530A-IT,C8051F852-C-GU,C8051F545-IQ,C8051F127-GQ,C8051F302-GM,SI1142-M01-GM,C8051F852-C-GM,SI1141-M01-GM,BGM220SC12WGA2,C8051F530A-IM,SI7210-B-14-IM2,SIM3C134-B-GM,SI1084-A-GM,C8051F302-GS,C8051T632-GM,BGM123A256V2,SI4012-C1001GT,C8051F365-C-GM,SI4464-B1B-FM,CP2104-F03-GM,C8051F588-IM,C8051F850-C-GM,C8051F960-B-GQ,CP2201-GM,SI1021-B-GM3,C8051F067-GQ,C8051F380-GQ,CP2110-F01-GM,EM3587-RT,C8051F510-IM,C8051F022-GQ,SI4356-B1A-FM,SI7201-B-85-IV,SI4031-B1-FM,EM3555-RT,C8051F336-GM,C8051F381-GM,CP2200-GQ,C8051F860-C-IS,C8051F397-A-GM,C8051F589-IM,SI7020-A20-IM,C8051F965-B-GM,C8051F381-GQ,EM3588-RT,C8051F346-GQ,C8051F850-C-GU,C8051F021-GQ,C8051F511-IM,SIM3U166-B-GM,C8051F044-GQ,C8051F220-GQ,CP2105P0950FGM,C8051F581-AQ,SI7201-B-40-IV,SI7201-B-06-IV,C8051F970-A-GM,SI4468-A2A-IM,SI7210-B-00-IV,C8051F34A-GQ,CPT212B-A01-GM,CPT007B-A02-GM,C8051F390-A-GM,C8051F544-IQ,C8051F34A-GM,C8051F524A-IM,C8051F850-C-IM,C8051F931-G-GM,SI1181-B3-GM,C8051F126-GQ,SIM3U156-B-GM,C8051F231-GQ,SI7203-B-00-FV,C8051F850-C-IU,C8051F814-GU,C8051F860-C-GS,C8051T610-GQ,SI7005-B-FM1,SI4010-C200RGT,SI4463-C2A-AM,C8051F313-GM,CPT007B-A02-GU,SI7053-A20-IM,SI4021-A1-FT,C8051F533-C-IT,C8051F991-C-GM,SI7021-A20-GM1,EFP0102GM20-E,SI1142-A11-GM,C8051F132-GQ,C8051F350-GQ,C8051F555-IM,SI7210-B-15-IM2,SI7201-B-08-IV,C8051F120-GQ,C8051F384-GQ,C8051F396-A-GM,SI4467-A2A-IM,SI7210-B-02-IV,C8051F063-GQ,C8051F567-IQ,SI1151-AB00-GM,SI4010-C2-GT,EM357-ZRT,SI4010-C2-GS,C8051F567-IM,SI7201-B-32-IV,C8051F326-GM,C8051F508-IM,C8051F360-C-GQ,C8051F861-C-GS,CP2402-GM,BGX220S22HNA21,C8051F005-GQ,C8051F590-IM,CP2130-F01-GM,C8051F315-GM,C8051F543-IM,C8051F314-GQ,C8051F385-GM,SI7022-A20-IM,C8051F385-GQ,C8051F392-A-GM,SI4063-B1B-FM,C8051F509-IM,SI7005-B-FM,SI7007-A20-IM,EFP0107GM20-D,SI1080-A-GM,EFP0107GM20-E,CP2403-GM,C8051F521-C-IM,C8051F006-GQ,C8051F337-GM,SI7201-B-21-IV,SI1002-E-GM2,SI4320-J1-FT1,SIM3U167-B-GM,C8051F040-GQ,SI7202-B-01-IV,C8051F017-GQ,EM3581-RT,C8051F133-GQ,SI4362-C2A-GM,SI4355-C2A-GM,SI1102-A-GM,C8051F582-AM,C8051F367-C-GM,C8051F364-C-GQ,EM357-IRT,SI7201-B-07-IV,C8051F351-GM,C8051F383-GM,EFP0109GM20-D,EFP0109GM20-E,SIM3U154-B-GM,C8051F580-IQ,SI7201-B-10-IV,SI1083-A-GM,C8051F580-IM,C8051F348-GQ,C8051F568-IM,C8051F383-GQ,CP2401-GQ,C8051F961-B-GM,S
【产品】USB转接芯片CP2615，实现不需要固件开发的USB到I2S数字音频快速传输
CP2615 是一款由Silicon Labs（芯科科技）推出的USB转接芯片，其旨在实现基于USB的音频应用的快速开发。CP2615简化了从USB到I2S传输音频数据的过程，无需任何代码开发，加快了USB音频配件（如USB扬声器，USB耳机和USB耳机）的研发、上市时间，主要应用于USB音乐盒，以及VoIP系统。 CP2615包括一个USB 2.0全速功能控制器，适用性强。
新产品 发布时间 : 2018-12-15
想把科大讯飞提供的i2s数据通过芯片转换为USB格式输给PC进行处理，但科大讯飞的原始音频就是I2S格式的，我们的平台只有USB 接口，需要一个芯片把I2S转成USB，选用CP2615这颗芯片可以么？
选择Silicon Labs CP2615 USB转接芯片应该是最好的选项了，开发简单，不需要编程，需要注意的就是CP2615的I2S是主设备，与它对接的芯片要是I2S的从设备才可以。
技术问答 发布时间 : 2018-10-18
2201251170 Addendum to 2112141154 MOQ Increase for all IC and SiP Module Products（2022-01-11-1170）
型号- 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
电子商城
品牌：SILICON LABS
品类：Wireless Gecko SoC
价格：￥8.1764
现货： 103,858
品牌：SILICON LABS
品类：Mighty Gecko Multi-Protocol Wireless SoC
价格：￥27.0929
现货： 90,767
现货市场
品牌：SILICON LABS
品类：Switch Hall Effect Magnetic Position Sensor
价格：￥2.2924
现货：126,000
服务
提供语音芯片、MP3芯片、录音芯片、音频蓝牙芯片等IC定制，语音时长：40秒~3小时（外挂flash），可以外挂TF卡或U盘扩容。
最小起订量： 1pcs 提交需求>
世强深圳实验室提供Robei EDA软件免费使用服务，与VCS、NC-Verilog、Modelsim等EDA工具无缝衔接，将IC设计高度抽象化，并精简到三个基本元素:模块、引脚、连接线，自动生成代码。点击预约，支持到场/视频直播使用，资深专家全程指导。
实验室地址： 深圳 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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