ZHCSLM0A
May 2020 – January 2021
LMK5B12204
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Pin Configuration and Functions
6.1
Device Start-Up Modes
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information: 4-Layer JEDEC Standard PCB
7.5
Thermal Information: 10-Layer Custom PCB
7.6
Electrical Characteristics
7.7
Timing Diagrams
7.8
Typical Characteristics
8
Parameter Measurement Information
8.1
Output Clock Test Configurations
9
Detailed Description
9.1
Overview
9.1.1
ITU-T G.8262 (SyncE) Standards Compliance
9.2
Functional Block Diagram
9.2.1
PLL Architecture Overview
9.2.2
DPLL Mode
9.2.3
APLL-Only Mode
9.3
Feature Description
9.3.1
Oscillator Input (XO_P/N)
9.3.2
Reference Inputs (PRIREF_P/N and SECREF_P/N)
9.3.2.1
Programmable Input Hysteresis
9.3.3
Clock Input Interfacing and Termination
9.3.4
Reference Input Mux Selection
9.3.4.1
Automatic Input Selection
9.3.4.2
Manual Input Selection
9.3.5
Hitless Switching
9.3.5.1
Hitless Switching With 1-PPS Inputs
9.3.6
Gapped Clock Support on Reference Inputs
9.3.7
Input Clock and PLL Monitoring, Status, and Interrupts
9.3.7.1
XO Input Monitoring
9.3.7.2
Reference Input Monitoring
9.3.7.2.1
Reference Validation Timer
9.3.7.2.2
Amplitude Monitor
9.3.7.2.3
Frequency Monitoring
9.3.7.2.4
Missing Pulse Monitor (Late Detect)
9.3.7.2.5
Runt Pulse Monitor (Early Detect)
9.3.7.2.6
Phase Valid Monitor for 1-PPS Inputs
9.3.7.3
PLL Lock Detectors
9.3.7.4
Tuning Word History
9.3.7.5
Status Outputs
9.3.7.6
Interrupt
9.3.8
PLL Relationships
9.3.8.1
PLL Frequency Relationships
9.3.8.2
Analog PLLs (APLL1, APLL2)
9.3.8.3
APLL Reference Paths
9.3.8.3.1
APLL XO Doubler
9.3.8.3.2
APLL1 XO Reference (R) Divider
9.3.8.3.3
APLL2 Reference (R) Dividers
9.3.8.4
APLL Phase Frequency Detector (PFD) and Charge Pump
9.3.8.5
APLL Feedback Divider Paths
9.3.8.5.1
APLL1 N Divider With SDM
9.3.8.5.2
APLL2 N Divider With SDM
9.3.8.6
APLL Loop Filters (LF1, LF2)
9.3.8.7
APLL Voltage Controlled Oscillators (VCO1, VCO2)
9.3.8.7.1
VCO Calibration
9.3.8.8
APLL VCO Clock Distribution Paths (P1, P2)
9.3.8.9
DPLL Reference (R) Divider Paths
9.3.8.10
DPLL Time-to-Digital Converter (TDC)
9.3.8.11
DPLL Loop Filter (DLF)
9.3.8.12
DPLL Feedback (FB) Divider Path
9.3.9
Output Clock Distribution
9.3.10
Output Channel Muxes
9.3.11
Output Dividers (OD)
9.3.12
Clock Outputs (OUTx_P/N)
9.3.12.1
AC-Differential Output (AC-DIFF)
9.3.12.2
HCSL Output
9.3.12.3
1.8-V LVCMOS Output
9.3.12.4
Output Auto-Mute During LOL
9.3.13
Glitchless Output Clock Start-Up
9.3.14
Clock Output Interfacing and Termination
9.3.15
Output Synchronization (SYNC)
9.4
Device Functional Modes
9.4.1
Device Start-Up Modes
9.4.1.1
EEPROM Mode
9.4.1.2
ROM Mode
9.4.2
PLL Operating Modes
9.4.2.1
Free-Run Mode
9.4.2.2
Lock Acquisition
9.4.2.3
Locked Mode
9.4.2.4
Holdover Mode
9.4.3
PLL Start-Up Sequence
9.4.4
Digitally-Controlled Oscillator (DCO) Mode
9.4.4.1
DCO Frequency Step Size
9.4.4.2
DCO Direct-Write Mode
9.5
Programming
9.5.1
Interface and Control
9.5.2
I2C Serial Interface
9.5.2.1
I2C Block Register Transfers
9.5.3
SPI Serial Interface
9.5.3.1
SPI Block Register Transfer
9.5.4
Register Map and EEPROM Map Generation
9.5.5
General Register Programming Sequence
9.5.6
EEPROM Programming Flow
9.5.6.1
EEPROM Programming Using Method #1 (Register Commit)
9.5.6.1.1
Write SRAM Using Register Commit
9.5.6.1.2
Program EEPROM
9.5.6.2
EEPROM Programming Using Method #2 (Direct Writes)
9.5.6.2.1
Write SRAM Using Direct Writes
9.5.6.2.2
User-Programmable Fields In EEPROM
9.5.7
Read SRAM
9.5.8
Read EEPROM
9.5.9
EEPROM Start-Up Mode Default Configuration
10
Application and Implementation
10.1
Application Information
10.1.1
Device Start-Up Sequence
10.1.2
Power Down (PDN) Pin
10.1.3
Power Rail Sequencing, Power Supply Ramp Rate, and Mixing Supply Domains
10.1.3.1
Mixing Supplies
10.1.3.2
Power-On Reset (POR) Circuit
10.1.3.3
Powering Up From a Single-Supply Rail
10.1.3.4
Power Up From Split-Supply Rails
10.1.3.5
Non-Monotonic or Slow Power-Up Supply Ramp
10.1.4
Slow or Delayed XO Start-Up
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.3
Application Curves
10.3
Do's and Don'ts
11
Power Supply Recommendations
11.1
Power Supply Bypassing
11.2
Device Current and Power Consumption
11.2.1
Current Consumption Calculations
11.2.2
Power Consumption Calculations
11.2.3
Example
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
12.3
Thermal Reliability
12.3.1
Support for PCB Temperature up to 105 °C
13
Device and Documentation Support
13.1
Device Support
13.1.1
TICS Pro
13.1.2
Related Documentation
13.2
接收文档更新通知
13.3
支持资源
13.4
Trademarks
13.5
静电放电警告
13.6
术语表
14
Mechanical, Packaging, and Orderable Information
14.1
Package Option Addendum
14.1.1
Packaging Information
14.1.2
Tape and Reel Information
封装选项
机械数据 (封装 | 引脚)
RGZ|48
MPQF123F
散热焊盘机械数据 (封装 | 引脚)
RGZ|48
QFND031W
订购信息
zhcslm0a_oa
zhcslm0a_pm
13.6
术语表
TI 术语表
本术语表列出并解释了术语、首字母缩略词和定义。
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