参数资料
| 型号： | XRT71D04IVTR |
| 厂商： | Exar Corporation |
| 文件页数： | 5/22页 |
| 文件大小： | 0K |
| 描述： | IC JITTER ATTENUATOR 4CH 80TQFP |
| 标准包装： | 1,000 |
| 类型： | * |
| PLL： | 是 |
| 输入： | 时钟 |
| 输出： | 时钟 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 4:3 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 44.736MHz |
| 除法器/乘法器： | 无/无 |
| 电源电压： | 3.135 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 80-LQFP |
| 供应商设备封装： | 80-TQFP（14x14） |
| 包装： | 带卷 (TR) |
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XRT71D04
4 CHANNEL E3/DS3/STS-1 JITTER ATTENUATOR, STS-1 TO DS3 DESYNCHRONIZER
REV. 1.1.1
12
SYSTEM DESCRIPTION
The XRT71D04 is an integrated 4-channel E3/DS3/
STS-1 jitter attenuator that attenuates the jitter from
the input clock and data. The jitter attenuation perfor-
mance meets the latest specifications such as Bellcore
GR-499 CORE,GR-253 CORE, ETSI TBR24,ITU-T
G.751,ITU-T G.752 and ITU-T G.755 standards.
The XRT71D04 also meets both the mapping and
pointer adjustment jitter generation criteria for both
Category I and Category II interfaces as specified in
Bellcore GR-253.
The XRT71D04 also meets the DS3 wander specifi-
cation that apply to SONET and asynchronous inter-
faces as specified in the ANSI T1.105.03b 1997 stan-
dard.
For support of loop-timing applications, the
XRT71D04 can also be used to reduce and limit the
amount of jitter in the recovered line clock signal.
Figure 5 presents a simple block diagram of the
XRT71D04, when it is configured to operate in the
Hardware Mode and Figure 6 presents a simple block
diagram of the XRT71D04, when it is configured to
operate in the Host Mode.
FIGURE 5. A TYPICAL CHANNEL_N OF THE XRT71D04 CONFIGURED TO OPERATE IN THE HARDWARE MODE
FSS
HOST
Reset
DS3/E3_n
16/32 Bit FIFO
Timing Control Block /
Phase locked Loop
Write Clock
Read Clock
RRCLK_n
RRPOS_n
RRNEG_n
FL_n
DJA_n
RClk_n
RCLKES
RPOS_n
RNEG_n
ICT
MCLK_n
Jittery
Clock
Smoothed
Clock
RRCLKES
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