- 您现在的位置：买卖IC网 > PDF目录294843 > ACS8509 ATM/SONET/SDH SUPPORT CIRCUIT, PQFP100 PDF资料下载
参数资料
| 型号： | ACS8509 |
| 元件分类： | 数字传输电路 |
| 英文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, PQFP100 |
| 封装： | LQFP-100 |
| 文件页数： | 20/68页 |
| 文件大小： | 703K |
| 代理商： | ACS8509 |
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页当前第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页第62页第63页第64页第65页第66页第67页第68页
ADVANCED COMMUNICATIONS
FINAL
DATASHEET
Revision 2.00/January 2006 Semtech Corp.
Page 27
www.semtech.com
ACS8509 SETS
This register is used to set up each of the 4 input reference sources.
Bits (7:6) of each byte defines the operation undertaken on the input frequency, in
accordance with the following key:
00
The input frequency is fed directly into the DPLL. (default).
01
The input frequency is internally divided down to 8 kHz, before being fed into
the DPLL. (For high jitter tolerance).
10
Unsupported configuration - do not use.
11
Uses the division coefficient stored in registers 46 and 47 (cnfg_freq_divn) to
divide the input by this value prior to being fed into the DPLL. The frequency
monitors must be disabled. The divided down frequency should equal 8 kHz.
The frequency (3:0) should be set to the nearest spot frequency just below the
actual input frequency. The DivN feature works for input frequencies between
1.544 MHz and 100 MHz.
Bits (5:4) define which leaky bucket group (0-3) is used, as defined in registers 50 to
5F. (default 00).
Bits (3:0) defines the frequency of the reference source in accordance with the
following:
0000 8 kHz,
0001 1.544 MHz (SONET)/2.048 MHz (SDH) (as defined by register 34, bit 2)
(default SEC4),
0010 6.48 MHz (default <SEC3> when MSTSLVB = 1),
0011 19.44 MHz (default <SEC3> when MSTSLVB=0, and <SEC1> <SEC2>),
0100 25.92 MHz,
0101 38.88 MHz,
0110 51.84 MHz,
0111 77.76 MHz,
1000 155.52 MHz,
1001 2 kHz,
1010 4 kHz.
Frequency of reference source <SEC1>.
00000011
Frequency of reference source <SEC2>.
00000011
Frequency of reference source <SEC3>.
00000010
(MSTSLVB=0)
00000011
(MSTSLVB=1)
Frequency of reference source <SEC4>.
00000001
Table 14 Register Description (cont...)
Addr.
(Hex)
Register Name
Description
Default Value (Bin)
相关PDF资料 |
PDF描述 |
|---|---|
| ACS8946T | ATM/SONET/SDH SUPPORT CIRCUIT, QCC48 |
| ACS8946 | ATM/SONET/SDH SUPPORT CIRCUIT, QCC48 |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ACS8509T | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
| ACS8510 | 制造商:Semtech Corporation 功能描述:Timing Source 100-Pin LQFP |
| ACS8510_03 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
| ACS8510REV2.1 | 制造商:Semtech Corporation 功能描述:Timing Source 100-Pin LQFP |
| ACS8510REV2.1SETS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
发布紧急采购，3分钟左右您将得到回复。