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参数资料
| 型号： | FS6370-01G-XTD |
| 厂商： | ON Semiconductor |
| 文件页数： | 25/28页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK GEN 3-PLL EEPROM 16SOIC |
| 标准包装： | 48 |
| 类型： | PLL 时钟发生器 |
| PLL： | 是 |
| 输入： | 晶体 |
| 输出： | CMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:4 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 230MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1115 (CN2011-ZH PDF) |
| 其它名称： | 766-1025 |
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FS6370
For best results, make sure the reference clock signal is as jitter-free as possible, can drive a 40 pF load with fast rise and fall times,
and can swing rail-to-rail.
If the reference clock is not a rail-to-rail signal, the reference must be AC coupled to XOUT through a 0.01 F or 0.1 F capacitor. A
minimum 1 V peak-to-peak signal is required to drive the internal differential oscillator buffer.
5.0 Run Mode
If the MODE pin is set to a logic-high, the device enters the run mode. The high state is latched (see MODE pin). The FS6370 then
copies the stored EEPROM data into its control registers and begins normal operation based on that data when the self-load is
complete.
The self-load process takes about 89,000 clocks of the crystal oscillator. During the self-load time, all clock outputs are held low. At a
reference frequency of 27 MHz, the self-load takes about 3.3ms to complete.
If the EEPROM is empty (all zeros), the crystal reference frequency provides the clock for all four outputs.
No external programming access to the FS6370 is possible in run mode. The dual-function PD/SCL and OE/SDA pins become a
power-down (PD) and output enable (OE) control, respectively.
5.1 Power-Down and Output Enable
A logic-high on the PD/SCL pin powers down only those portions of the FS6370 which have their respective power-down control bits
enabled. Note that the PD/SCL pin has an internal pull-up.
When a post divider is powered down, the associated output driver is forced low. When all PLLs and post dividers are powered down
the crystal oscillator is also powered down. The XIN pin is forced low, and the XOUT pin is pulled high.
A logic-low on the OE/SDA pin tristates all output clocks. Note that this pin has an internal pull-up.
6.0 Program Mode
If the MODE pin is logic-low, the device enters the program mode. All internal registers are cleared to zero, delivering the crystal
frequency to all outputs. The device allows programming of either the internal 128-bit EEPROM or the on-chip control registers via I2C
control over the PD/SCL and OE/SDA pins. The EEPROM and the FS6370 act as two separate parallel devices on the same on-chip
I2C-bus. Choosing either the EEPROM or the device control registers is done via the I2C device address.
The dual-function PD/SCL and OE/SDA pins become the serial data I/O (SDA) and serial clock input (SCL) for normal I2C
communications. Note that power-down and output enable control via the PD/SCL and OE/SDA pins is not available.
6.1 EEPROM Programming
Data must be loaded into the EEPROM in a most-significant-bit (MSB) to least-significant-bit (LSB) order. The register map of the
EEPROM is noted in Table 3.
The device address of the EEPROM is:
A6
A5
A4
A3
A2
A1
A0
1
0
1
0
X
6.1.1. Write Operation
The EEPROM can only be written to with the random register write procedure (see Section 8.2.2). The procedure consists of the device
address, the register address, a R/W bit, and one byte of data.
Following the STOP condition, the EEPROM initiates its internally timed 4ms write cycle, and commits the data byte to memory. No
acknowledge signals are generated during the EEPROM internal write cycle.
Rev. 3 | Page 6 of 28 | www.onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FS6370-01G-XTP | 功能描述:时钟发生器及支持产品 EE PROG 3-PLL CLOCK RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| FS6377 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Programmable 3-PLL Clock Generator IC |
| FS6377-01 | 制造商:AMI 制造商全称:AMI 功能描述:Programmable 3-PLL Clock Generator IC |
| FS6377-01G | 制造商:AMI 制造商全称:AMI 功能描述:Programmable 3-PLL Clock Generator IC |
| FS6377-01G-XTD | 功能描述:时钟发生器及支持产品 I2C PROG 3-PLL CLK RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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