ADN4605: 40x40数字交叉点开关技术详解

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"ADN4605是一款40×40数字交叉点开关，由ADI公司制造，专用于视频矩阵核心设计。该芯片具备高速数据传输能力，支持从DC到4.25Gbps的每个端口NRZ数据速率，并提供可调接收均衡和发送预加重功能，以补偿长距离传输中的信号损失。此外，它还具有低功耗、低抖动、灵活的电源电压范围以及多种接口选项等特点。" ADN4605是ADI公司推出的一款高性能数字交叉点开关，主要用于构建高密度、高速的视频矩阵系统。该器件的关键特性包括： 1. **高速数据传输**：ADN4605支持每端口从直流到4.25Gbps的NRZ（非归零）数据速率，适用于高速数据交换应用。 2. **可调接收均衡**：内置的接收均衡器可以设置为3dB、6dB或12dB的增益提升，能够补偿长达40英寸FR4材料在4.25Gbps时的信号衰减，确保信号质量。 3. **可编程发送预加重/去加重**：用户可以根据需要调整发送端的预加重和输出电平，同样是为了补偿长距离传输后信号的损失。 4. **低功耗设计**：每个通道在2.5V电源和400mVp-p差分输出电平摆幅下仅消耗105mW，降低了系统的总体能耗。 5. **40×40全差分非阻塞阵列**：这种非阻塞设计使得任意输入可以连接到任意输出，提供灵活的信号路由。 6. **双级连接编程与双重映射**：允许双排名连接，通过两个独立的映射进行配置，增强了系统的可配置性。 7. **低抖动**：通常情况下，抖动低于25ps，确保了高精度的定时性能。 8. **宽电源电压范围**：支持2.5V至3.3V的电源电压，适应不同的系统需求。 9. **输入输出接口**：支持直流耦合或交流耦合的差分PECL/CML输入，以及差分CML输出，兼容多种接口标准。 10. **端口极性反转**：简化了线路布局，使得路由更加容易。 11. **50Ω片上I/O终端与禁用功能**：提供精确的阻抗匹配，同时允许在需要时禁用终端。 12. **数据编码支持**：支持8b10b编码、扰码或未编码的NRZ数据，满足不同数据编码协议的需求。 13. **控制接口**：提供串行(I²C从设备或SPI)和并行控制接口，方便系统集成和配置。 ADN4605的功能框图显示了其内部结构，包括均衡器(EQ)、接收器(Rx)、发射器(Tx)、40×40开关矩阵、连接映射寄存器、并行/串行控制逻辑接口、预加重电平和输出电平设置等组成部分，这些组件协同工作，实现高效的数据交换和路由功能。 ADN4605是一款面向高速、高密度视频矩阵系统的核心芯片，其丰富的特性使得它能够在各种严苛的环境中稳定、高效地工作。无论是用于数据中心、广播设施还是其他需要高速数据交换的应用，ADN4605都是一个理想的选择。

ADN4605 Data Sheet

Rev. A | Page 10 of 56

Pin No. Mnemonic Type Description

B23 ON20 Output High Speed Output Complement.

B24

OP20

Output

High Speed Output.

B25

Power

Negative Supply.

B26 V

Power Negative Supply.

C1 V

Power Negative Supply.

C2 IP0 Input High Speed Input.

C3 V

Power Negative Supply.

C4 V

Power Positive Supply.

C5 V

Power Positive Supply.

C6 V

Power Positive Supply.

C7 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C8 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C9 V

TTOB

Power

Output Termination Supply (B). T The V

TTOB

pins are normally tied to the

TTOA

pins.

C10 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C11 V

Power Positive Supply.

C12 V

Power Positive Supply.

C13

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C14 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C15 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C16

Power

Positive Supply.

C17

Power

Positive Supply.

C18 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C19 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C20 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C21 V

TTOB

Power

Output Termination Supply (B). The V

TTOB

pins are normally tied to the

TTOA

pins.

C22 V

Power Positive Supply.

C23 V

Power Positive Supply.

C24 DV

Power Digital Positive Supply.

C25 V

Power Negative Supply.

C26 V

Power Negative Supply.

D1 IP1 Input High Speed Input.

D2 IN0 Input High Speed Input Complement.

D3 V

Power Positive Supply.

D4 DV

Power Digital Positive Supply.

Power

Positive Supply.

Power

Positive Supply.

D7 V

Power Negative Supply.

D8 V

Power Negative Supply.

D9 V

Power Negative Supply.

D10 V

Power Negative Supply.

D11 V

Power Positive Supply.

D12 V

Power Positive Supply.

Data Sheet ADN4605

Rev. A | Page 11 of 56

Pin No. Mnemonic Type Description

D13 V

Power Negative Supply.

D14

Power

Negative Supply.

D15

Power

Negative Supply.

D16 V

Power Positive Supply.

D17 V

Power Positive Supply.

D18 V

Power Negative Supply.

D19 V

Power Negative Supply.

D20 V

Power Negative Supply.

D21 V

Power Negative Supply.

D22 V

Power Positive Supply.

D23 DV

Power Digital Positive Supply.

D24 V

Power Positive Supply.

D25 V

Power Negative Supply.

D26 IN39 Input High Speed Input Complement.

E1 IN1 Input High Speed Input Complement.

E2 IP2 Input High Speed Input.

E3 V

Power Positive Supply.

E4 V

Power Negative Supply.

E23 V

Power Negative Supply.

E24 V

Power Positive Supply.

E25 IN38 Input High Speed Input Complement.

E26

IP39

Input

High Speed Input

IP3

Input

High Speed Input

F2 IN2 Input High Speed Input Complement.

F3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

F4 V

Power Negative Supply.

F23 V

Power Negative Supply.

F24 V

TTIB

Power

Input Termination Supply (B). The V

TTIB

pins are normally tied to the

TTIA

pins.

F25 IP38 Input High Speed Input.

F26

IN37

Input

High Speed Input Complement.

IN3

Input

High Speed Input Complement.

G2 IP4 Input High Speed Input.

G3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

G4 V

Power Negative Supply.

G23 V

Power Negative Supply.

G24 V

TTIB

Power

Input Termination Supply (B). The V

TTIB

pins are normally tied to the

TTIA

pins.

G25

IN36

Input

High Speed Input Complement.

G26

IP37

Input

High Speed Input.

IP5

Input

High Speed Input.

H2 IN4 Input High Speed Input Complement.

H3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

H4 V

Power Negative Supply.

H23

WE/SCL/SCK

Control

Parallel control interface: First-Rank Write Strobe (WE) Active Low.

C Control Interface: I

C Clock (SCL).

SPI Control Interface: SPI Clock (SCK).

H24 V

TTIB

Power

Input Termination Supply (B). The V

TTIB

pins are normally tied to the

TTIA

pins.

ADN4605 Data Sheet

Rev. A | Page 12 of 56

Pin No. Mnemonic Type Description

H25 IP36 Input High Speed Input.

H26

IN35

Input

High Speed Input Complement.

IN5

Input

High Speed Input Complement.

J2 IP6 Input High Speed Input.

J3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

C/SPI/ UPDATE

Control

C Control Interface Selection (I

C).

SPI Control Interface Selection (

SPI) Active Low.

Parallel Control Interface (

UPDATE) Active Low.

J23

RE/SDI

Control

Parallel Control Interface: Read Strobe (RE) Active Low.

SPI Control Interface: Data Input (SDI) SPI Control.

J24 V

TTIB

Power

Input Termination Supply (B). The V

TTIB

pins are normally tied to the

TTIA

pins.

J25 IN34 Input High Speed Input.

J26 IP35 Input High Speed Input Complement.

K1 IP7 Input High Speed Input.

K2 IN6 Input High Speed Input Complement.

K3 V

Power Power Supply.

SER/

PAR

Control

Serial Control Interface Selection (SER).

Parallel Control Interface Selection (PAR) Active Low.

K23

Control Chip Select Active Low.

K24 V

Power Positive Supply.

K25 IP34 Input High Speed Input.

K26 IN33 Input High Speed Input Complement.

L1 IN7 Input High Speed Input Complement.

L2 IP8 Input High Speed Input.

L3 V

Power Positive Supply.

RESET

Control

Configuration Registers: Reset (Active Low). This pin is normally pulled

up to DV

L23 DATA0/SDA/SDO Control

Parallel Control Interface: Register Data Bit 0 (DATA0).

C Control Interface: Data In (SDA).

SPI Control Interface: Data Out (SDO).

L24 V

Power Positive Supply.

L25 IN32 Input High Speed Input Complement.

L26 IP33 Input High Speed Input.

M1 IP9 Input High Speed Input.

M2 IN8 Input High Speed Input Complement.

M3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

M4 ADDR0 Control Parallel Control Interface: Register Address Bit 0.

C Control Interface: Slave Address Bit 0.

M23

DATA1/

UPDATE

Control

Parallel Control Interface: Register (DATA1). Data Bit 1.

C or SPI Serial Control Interface (UPDATE). Active Low.

M24

TTIB

Power

Input Termination Supply (B). The V

TTIB

pins are normally tied to the

TTIA

pins.

M25 IP32 Input High Speed Input

M26 IN31 Input High Speed Input Complement.

N1 IN9 Input High Speed Input Complement.

N2 IP10 Input High Speed Input.

N3 V

TTIA

Power

Input Termination Supply (A). The V

TTIA

pins are normally tied to the

TTIB

pins.

N4 ADDR1 Control

Parallel Control Interface: Register Address Bit 1.

C Control Interface: Slave Address Bit 1.

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void AD_cal(void) { bat_adn=ADC_GetConversionValue(ADC1)*4095/(4095*2.3/2.5); bat_adn=bat_adn*0.001+bat_ado*0.999; bat_ado=bat_adn; }

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void AD_cal(void) { bat_adn=ADC_GetConversionValue(ADC1)4095/(40952.3/2.5); bat_adn=bat_adn0.001+bat_ado0.999; bat_ado=bat_adn; }