Datasheet > 9ZML1256

9ZML1256

更新时间： 2024-10-15 14:58:19

品牌	Logo	应用领域
瑞萨 - RENESAS		PC
页数	文件大小	规格书
28页	778K
描述
2:12 PCIe Clock Mux Gen1-5 with SMBUS Write Protection

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9ZML1256 数据手册

9ZML1245/9ZML1255/

9ZML1256

2:12 Clock Multiplexer for PCIe

Gen1–5 and UPI

Datasheet

Description

Features

▪ 12 Low-power HCSL (LP-HCSL) outputs

The 9ZML1245/9ZML1255/9ZML1256 devices are third

generation enhanced performance 2-input, 12-output clock

multiplexers. Each input clock has software adjustable

input-to-output delay when operating in Zero-Delay (ZDB) mode.

The devices also implement an extensive set of features ensuring

that clocks are well behaved with today's ever more complex

power-up sequencing. The 9ZML1256 has an SMBus Write

Lockout pin for increased device and system security.

▪ Integrated terminations for 85Ω (9ZXL1255/56) and 100Ω

(9ZXL1245) systems eliminate up to 4 resistors per output pair

▪ Flexible Power Sequencing (FPS) configuration via SMBus

▪ Power Down Tolerant input (PDT); inputs: SEL_A_B#,

SADR[1:0]_tri, OE# pins

▪ Input-to-output delay: 0ps default. Programmable through 360°

▪ 2 software-configurable input-to-output delay lines

▪ Dedicated OE# pins support PCIe CLKREQ# function

▪ Up to 9 selectable SMBus addresses (9ZXL1245/55)

▪ SMBus Write Protect Pin (9ZXL1256)

PCIe Clocking Architectures

▪ Common Clocked (CC)

▪ Independent Reference (IR) with and without spread spectrum

▪ Selectable ZDB bandwidths minimizes jitter peaking in

cascaded ZDB topologies

Key Specifications

▪ Hardware/SMBus control of ZDB and FOB modes

▪ Spread-spectrum compatible

▪ Fanout Buffer Mode additive phase jitter:

• PCIe Gen5 CC < 15fs RMS

▪ Up to 400MHz FOB operation

• DB2000Q additive jitter < 25fs RMS

• QPI/UPI 11.4GB/s < 40fs RMS

• IF-UPI additive jitter < 70fs RMS

▪ ZDB Mode phase jitter:

▪ 100MHz ZDB mode operation

▪ -40°C to +85°C operating temperature range

▪ 10 × 10 mm 72-VFQFPN package

• PCIe Gen5 CC < 24fs RMS

Typical Applications

• QPI/UPI 11.4GB/s < 110fs RMS

• IF-UPI additive jitter < 130fs RMS

▪ Cycle-to-cycle jitter < 50ps

▪ Servers/High-performance Computing

▪ nVME Storage

▪ Networking

▪ Output-to-output skew < 50ps

▪ Accelerators

▪ Industrial Control

Block Diagram

VDDR

VDDA

VDD x3

VDDIO x4

FBOUT_NC#

FBOUT_NC

PLL

DIF_INA#

DIF_INA

DIF_INA#

DIF_INA

DIF11#

DIF11

^SEL_A_B#

^HIBW_BYPM-LOBW#

^CKPWRGD_PD#

^OE[11:0]#

outputs

Control Logic

SMBus

9ZML1256

only

vSMB_WRTLOCK

vSADR1_tri

DIF0#

DIF0

Factory

vSADR0_tri

SMBCLK

SMBDAT

9ZML1245/55

only

Engine Configuration

Resistors are integrated

GND x7

GNDA

R31DS0023EU0600 May 12, 2021

12 3 4 5 6 7...28

中文翻译

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与9ZML1256相关器件

型号	品牌	获取价格	描述	数据表
9ZX21200	RENESAS	获取价格	12-output DB1200Z Derivative
9ZX21201	IDT	获取价格	12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI
9ZX21201	RENESAS	获取价格	12-output DB1200Z Compliant Buffer
9ZX21201AKLF	IDT	获取价格	12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI
9ZX21201AKLFT	IDT	获取价格	12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI
9ZX21201BKLF	IDT	获取价格	12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI
9ZX21201BKLFT	IDT	获取价格	12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI
9ZX21501	RENESAS	获取价格	15-output DB1900Z Derivative
9ZX21501B	IDT	获取价格	15-Output Differential Zbuffer for PCIe Gen2/3 and QPI
9ZX21501BKLF	IDT	获取价格	15-Output Differential Zbuffer for PCIe Gen2/3 and QPI

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