- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16440 > CDB8420 (Cirrus Logic Inc)EVALUATION BOARD FOR CS8420 PDF資料下載
參數(shù)資料
| 型號： | CDB8420 |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 43/94頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVALUATION BOARD FOR CS8420 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 音頻，采樣率轉(zhuǎn)換器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | CS8420 |
| 主要屬性： | 帶數(shù)字音頻發(fā)射器和接收器的采樣率轉(zhuǎn)換器 |
| 次要屬性： | 44.1、48、96 kHz 輸出采樣率，AES/EBU，S/PDIF，EIAJ-340，GUI |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | 598-1125-5-ND - IC SAMPLE RATE CONVERTER 28SOIC |
| 其它名稱： | 598-1782 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁當(dāng)前第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁
48
DS245F4
CS8420
11. SYSTEM AND APPLICATIONS ISSUES
11.1
Reset, Power Down and Start-up Options
When RST is low, the CS8420 enters a low-power mode. All internal states are reset, including the control
port and registers, and the outputs are muted. When RST is high, the control port becomes operational, and
the desired settings should be loaded into the control registers. Writing a 1 to the RUN bit will then cause
the part to leave the low-power state and begin operation. After the PLL and the SRC have settled, the AES3
and serial audio outputs will be enabled.
Some options within the CS8420 are controlled by a start-up mechanism. During the reset state, some of
the output pins are reconfigured internally to be inputs. Immediately upon exiting the reset state, the level
of these pins is sensed. The pins are then switched to be outputs. This mechanism allows output pins to be
used to set alternative modes in the CS8420 by connecting a 47 k
Ω resistor between the pin and either VD+
(High) or DGND (Low). For each mode, every start-up option select pin MUST have an external pull-up or
pull-down resistor. In software mode, the only start-up option pin is EMPH, which is used to set a chip ad-
dress bit for the control port in IC mode. Hardware modes use many start-up options, which are detailed in
the hardware definition section at the end of this data sheet.
11.2
Transmitter Startup
When the CS8420 is taken out of power-down and the AES3 receiver is configured to be in-circuit, the part
uses the clock recovered from the AES3 input stream to advance its internal state machine to run. This can
be a problem if no valid AES3 stream is present at the RXP/RXN pins and data input through the serial audio
port needs to be output through the AES3 transmitter.
To complete initialization and begin operation when the AES3 receiver is in-circuit and no valid AES3 input
stream is presented to the RXP/RXN pins, the user must execute the following sequence:
1.
Place the CS8420 in power-down (RUN = 0).
2.
Set the serial audio input and output ports to Slave mode (SIMS = 0, SOMS = 0).
3.
Set the input and output time base to the OMCK input pin (OUTC = 0, INC = 1).
4.
Configure the SRC to receive its input from the serial audio input port (SRCD = 0).
5.
Configure the serial audio output port to receive its input from the serial audio input port (SPD[1:0] = 01).
6.
Configure the AES3 transmitter to receive its input from the serial audio input port (TXD[1:0] = 01).
7.
Set the RUN bit (RUN = 1).
After completing steps 1-7, the transmitter will function properly, and the data flow can be altered for the
application without powering down.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VI-J11-EX | CONVERTER MOD DC/DC 12V 75W |
| GEM28DTAT | CONN EDGECARD 56POS R/A .156 SLD |
| 6278895-7 | C/A 62.5/125 RIS SC MTRJ 7M1 |
| A3BBB-2436G | IDC CABLE- ASR24B/AE24G/ASR24B |
| GSM12DTAN | CONN EDGECARD 24POS R/A .156 SLD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDB8421 | 功能描述:音頻 IC 開發(fā)工具 2-Ch 32-Bit 192kHz sample rate converte RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB8422 | 功能描述:界面開發(fā)工具 Eval Bd 192kHz SRC S/PDIF Receiver RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| CDB8427 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 96kHz Dig. Audio Transcvr RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB8952 | 制造商:Cirrus Logic 功能描述:NOT RECOMMENDED FOR NEW DESIGNS - USE CDB8952T - Bulk 制造商:Cirrus Logic 功能描述:Tools Development kit Kit Con |
| CDB8952T | 功能描述:以太網(wǎng)開發(fā)工具 Eval Bd 100BASE-TX/ 10BASE-T Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。