- 您现在的位置：买卖IC网 > PDF目录30737 > LC89057W-VF4 SPECIALTY CONSUMER CIRCUIT, PQFP48 PDF资料下载
参数资料
| 型号： | LC89057W-VF4 |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封装： | 7 X 7 MM, SQFP-48 |
| 文件页数： | 7/61页 |
| 文件大小： | 570K |
| 代理商： | LC89057W-VF4 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页
LC89057W-VF4
No.7202-15/61
9.1.5 Points to notice about switching clock source while PLL is locked
In the state where the PLL is locked, if the XIN source is switched with SELMTD, OCKSEL, and RCKSEL while the
oscillator amplifier is stopped (initial setting), clock continuity is maintained but RERR temporarily outputs an error
(high level) indication. When switched to XIN source, the oscillator amplifier is switched to the operating state at the
same time. Consequently the input fs calculation restarts. At this time, the previous fs calculation value is reset and
compared with the newly calculated fs value. Then those two values are found not identical, that’s why the error is
temporarily issued.
The following settings is required to switch the clock source with SELMTD, OCKSEL, and RCKSEL without
changing the RERR status while PLL is locked.
(1) Set the oscillation amplifier to the continuous operation mode with AMPOPR[1:0].
(2) Set to the mode where fs change is not reflected to the error flag with FSERR.
By one of the above settings, changing of the RERR status can be constrained when the clock source is switched with
SELMTD, OCKSEL, and RCKSEL.
When switching the clock source to XIN from the state where the oscillation amplifier is stopped while the PLL is
locked, the output clock using XIN as the source starts outputting after the oscillation amplifier starts operating.
When the PLL is locked, switching of the clock source from XIN to PLL is performed instantaneously. In either case,
clock continuity is maintained.
9.1.6 Master clock block diagram (TMCK, XIN, XOUT, RMCK, XMCK)
The relationships between the three master clocks, switching, and the frequency division function, are described
below.
The contents in the square brackets [] by the switch and function blocks correspond to the write command names.
Lock/Unlock is automatically switched by PLL locking/unlocking.
Figure 9.2 Master Clock Block Diagram
PLL
1/N
(256fs or 512fs)
Selected Biphase
TMCK (I) 256fs only
XIN (I)
XOUT (O)
RMCK (O)
XMCK (O)
[EXSYNC]
[RCKSEL]
[PLLOPR]
[PLLSEL]
[PRSEL1]
[XRSEL1]
[XINSEL]
[XMSEL1]
[AMPOPR1]
(N=1, 2)
Lock /Unlock
1/N
(N=1, 2)
1/N
(N=1, 2, 4)
1/N
(N=1, 2, 4)
[OCKSEL]
[XMSEL0]
[XRSEL0]
[PRSEL0]
[SELMTD]
[AMPOPR0]
相关PDF资料 |
PDF描述 |
|---|---|
| LC89058W-E | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LC89058W-E | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LC8905V | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| LC8910 | TRANSMITTER/RECEIVER IC, PDIP24 |
| LC8913 | TRANSMITTER/RECEIVER IC, PDIP40 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LC89057W-VF4AD-E | 制造商:ON Semiconductor 功能描述: |
| LC89057W-VF4A-E | 功能描述:音频发送器、接收器、收发器 RoHS:否 制造商:Cirrus Logic 工作电源电压:3.3 V, 5 V 电源电流:11.8 mA 通道数量:1 最大工作温度:+ 70 C 接口类型:I2C, SPI 安装风格:SMD/SMT 封装 / 箱体:TSSOP-28 封装: |
| LC89057W-VF4A-TBM-E | 制造商:ON Semiconductor 功能描述: 制造商:ON Semiconductor 功能描述:AUDIO I/F RECEIVER |
| LC89058W | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:CMOS IC Digital Audio Interface Receiver |
| LC89058WA-E | 功能描述:音频发送器、接收器、收发器 RoHS:否 制造商:Cirrus Logic 工作电源电压:3.3 V, 5 V 电源电流:11.8 mA 通道数量:1 最大工作温度:+ 70 C 接口类型:I2C, SPI 安装风格:SMD/SMT 封装 / 箱体:TSSOP-28 封装: |
发布紧急采购，3分钟左右您将得到回复。