参数资料
| 型号： | 78P2351R-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO FOR 78P2351R |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | * |
Design Guidelines for TERIDIAN 78P235x LIUs
REFERENCE DESIGN WITH TRANSWITCH L4M (E4) MAPPER
For E4 applications, the L4M mapper from Transwitch is a very commonly used device. The Teridian 78P2351
can work with the L4M mapper seamlessly for such applications. The following block diagram displays how two
devices are inter-connected at the system level.
VCXO
34.816MHz
Loop filter
5V to
Div 2
RXDn
3.3V
4-bit nibble
PIxD
Transwitch L4M
TXC-03456
E4 Mapper
RXCO
Data
Buffer
35MHz
PICK
E4 Line Interface
(75ohm coax)
TXDn
4-bit nibble
POxD
TDK 78P2351
TXC
35MHz
POCK
E4/STM1e LIU
EXLOS
SDH (STM1)
Overhead Processor
LOS (active-high)
Serial 155Mbps LVPECL
(NRZ coding)
Figure 12: Inter-connection Between Transwitch L4M and 78P2351
Notes:
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Since the Transwitch L4M provides a clock for the 78P2351, the 78P2351 should be set for parallel-slave
mode accordingly.
The Transwitch L4M is a 5V device and the 78P2351 is a 3.3V device. A 5V to 3.3V data buffer is needed to
translate the voltages between them
During L4M Line Loopback, configure the 78P2351 for Loop-timing parallel-slave mode.
The dual channel 78P2352 is not recommended for E4 applications due to the asynchronous nature of each
E4 signaling path.
OPTICAL MEDIA INTERFACE
Please send email to wan.support@Teridiansemiconductor.com for detailed instructions on how to use the optical
media interface.
LOSS OF LOCK BEHAVIOR
After power-up or chip reset, the receiver LOL status bits (and pins) may be in an undefined state and report
incorrect status. To properly reset the Rx LOL detector, one must assert & de-assert the LOLOR bit (5) in the
signal control register during initialization. Use of receiver loss of lock detector is not recommended in HW (pin
control) operation. False Rx LOL assertion or toggling the LOLOR bit will not affect the integrity of the data path
or clock recovery.
Page 11 of 15
? 2008 Teridian Semiconductor Corp.
Rev 2.1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 78P2351R-IM | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Serial 155M NRZ to CMI Converter |
| 78P2351R-IM/F | 功能描述:接口 - 专用 Serial 155M NRZ to CMI Converter RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| 78P2351R-IMR | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Serial 155M NRZ to CMI Converter |
| 78P2351R-IMR/F | 功能描述:接口 - 专用 Serial 155M NRZ to CMI Converter RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| 78P2352 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Dual Channel OC-3/ STM1-E/ E4 LIU |
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