- 您现在的位置：买卖IC网 > PDF目录294843 > ACS8946 ATM/SONET/SDH SUPPORT CIRCUIT, QCC48 PDF资料下载
参数资料
| 型号： | ACS8946 |
| 元件分类： | 数字传输电路 |
| 英文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, QCC48 |
| 封装： | 7 X 7 MM, QFN-48 |
| 文件页数： | 37/40页 |
| 文件大小： | 663K |
| 代理商： | ACS8946 |
第1页第2页第3页第4页第5页第6页第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页当前第37页第38页第39页第40页
ADVANCED COMMUNICATIONS
FINAL
DATASHEET
Revision 3/November 2006 Semtech Corp.
Page 6
www.semtech.com
ACS8946 JAM PLL
24
CFG_IN6
I
LVTTL/
LVCMOSD
Configuration pin for setting up the device just after power-up or after a system reset (via
pin 40, RESETB). This configuration pin is analyzed during the configuration phase, just
after power-up, so that the device works out whether this pin is connected to ground,
power or one of the configuration outputs at pins 13 to 16. This pin is used with pin 25 to
to set the value of the odd divider, which applies a division of 1/3/5/7/9/11/13 or 15 to
the otherwise selected spot frequency, on each of the four outputs OUTN/P[4:1]. It is also
used to enable or disable the lock detector (pin 17 LOCKB), and to set the output pad
mode (CML or PECL) for OUT3 and OUT4 as shown in Table 13.
25
CFG_IN7
I
LVTTL/
LVCMOSD
Configuration pin for setting up the device just after power-up or after a system reset (via
pin 40, RESETB). This configuration pin is analyzed during the configuration phase, just
after power-up, so that the device works out whether this pin is connected to ground,
power or one of the configuration outputs at pins 13 to 16. This pin is used with pin 24 to
to set the value of the odd divider, which applies a division of 1/3/5/7/9/11/13 or 15 to
the otherwise selected spot frequency on each of the four outputs OUTN/P[4:1]. It is also
used to enable or disable the lock detector (pin 17 LOCKB) and to set the output pad
mode (CML or PECL) for OUT3 and OUT4 as shown in Table 13.
27
CLK1N
I
LVPECL
Input reference clock that the PLL will phase and frequency lock to. Can accept
19.44 MHz, 38.88 MHz, 77.76 MHz, 125.00 MHz, 155.52 MHz or 156.25 MHz, and
frequencies near to these so long as the chosen frequency remains stable to within the
tracking range of ±400 ppm. (See “Inputs” on page 8 and Table 10). Can accept LVPECL
or LVDS or CML inputs given suitable external interface components. Partnered with pin
28. This clock or CLK2 can be automatically or manually selected as the reference clock,
see Table 4.
28
CLK1P
I
LVPECL
Input reference clock that the PLL will phase and frequency lock to. Can accept
19.44 MHz, 38.88 MHz, 77.76 MHz, 125.00 MHz, 155.52 MHz or 156.25 MHz and
frequencies near to these so long as the chosen frequency remains stable to within the
tracking range of ±400 ppm. (See “Inputs” on page 8 and Table 10). Can accept LVPECL
or LVDS or CML inputs given suitable external interface components. Partnered with pin
27. This clock or CLK2 can be automatically or manually selected as the reference clock,
see Table 4.
30
CLK2N
I
LVPECL
Second Input reference clock that the PLL will phase and frequency lock to. Input
reference clock that the PLL will phase and frequency lock to. Can accept 19.44 MHz,
38.88 MHz, 77.76 MHz, 125.00 MHz, 155.52 MHz or 156.25 MHz, and frequencies
near to these so long as the chosen frequency remains stable to within the tracking
range of ±400 ppm. (See “Inputs” on page 8 and Table 10). Can accept LVPECL or LVDS
or CML inputs given suitable external interface components. Partnered with pin 31. This
clock or CLK1 can be automatically or manually selected as the reference clock, see
31
CLK2P
I
LVPECL
Second Input reference clock that the PLL will phase and frequency lock to. Input
reference clock that the PLL will phase and frequency lock to. Can accept 19.44 MHz,
38.88 MHz, 77.76 MHz, 125.00 MHz, 155.52 MHz or 156.25 MHz, and frequencies
near to these so long as the chosen frequency remains stable to within the tracking
range of ±400 ppm. (See “Inputs” on page 8 and Table 10). Can accept LVPECL or LVDS
or CML inputs given suitable external interface components. Partnered with pin 30. This
clock or CLK2 can be automatically or manually selected as the reference clock, see
32
SEL_CLK2
I
LVTTL/
LVCMOSD
Used in combination with pin 33, AUTO_SEL, either to select the CLK2 clock (high) or
CLK1 clock (low) in manual control mode, or to select automatic switching mode, as
described in Table 4.
Table 3 Functional Pins (cont...)
Pin No.
Symbol
I/O
Type
Description
相关PDF资料 |
PDF描述 |
|---|---|
| ACT-141223-2R | 1200 MHz - 1400 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACT-141223-4R | 1200 MHz - 1400 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACT-141223-4 | 1200 MHz - 1400 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACT-141223-5 | 1200 MHz - 1400 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACT-5261PC-133F17Q | ACT 5261 64-Bit Superscaler Microprocessor |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ACS8946EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Jitter Attenuating, Multiplying Phase Locked Loop, with Protection Switch, for OC-12/STM-4 and GbE |
| ACS8946T | 功能描述:IC JITTER ATT MULT PLL 48-QFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:- 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ACS8947T | 功能描述:IC JITTER ATT MULT PLL 48-QFN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:- 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ACS9010 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| ACS9510/50EVB | 制造商:Semtech Corporation 功能描述: |
发布紧急采购，3分钟左右您将得到回复。