參數(shù)資料
型號(hào)： KSZ8021RNL
廠商： Micrel Inc
文件頁(yè)數(shù)： 43/43頁(yè)
文件大?。?/td> 0K
描述： TXRX PHY 100BASE TX 3.3V 24QFN
標(biāo)準(zhǔn)包裝： 75
類型： PHY 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： RMII
電源電壓： 1.8V，2.5V，3.3V
安裝類型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 24-QFN 裸露焊盤(pán)（4x4）
包裝： 管件
其它名稱： 576-3740-5
Micrel, Inc.
KSZ8021RNL / KSZ8031RNL
August 2010
9
M9999-082710-1.0
Pin Description – KSZ8021RNL / KSZ8031RNL
Pin Number
Pin Name
Type
(1)
Pin Function
1
VDD_1.2
P
1.2V core VDD (power supplied by KSZ8021RNL / KSZ8031RNL)
Decouple with 2.2uF and 0.1uF capacitors-to-ground.
2
VDDA_3.3
P
3.3V analog VDD.
3
RXM
I/O
Physical receive or transmit signal (- differential)
4
RXP
I/O
Physical receive or transmit signal (+ differential)
5
TXM
I/O
Physical transmit or receive signal (- differential)
6
TXP
I/O
Physical transmit or receive signal (+ differential)
7
XO
O
Crystal feedback – for 25 MHz crystal
This pin is a no connect if oscillator or external clock source is used.
8
XI
I
RMII – 25MHz Mode:
25MHz +/-50ppm Crystal / Oscillator / External Clock Input
RMII – 50MHz Mode:
50MHz +/-50ppm Oscillator / External Clock Input
For unmanaged mode (power-up default setting),
KSZ8021RNL takes in the 50MHz clock on this pin.
KSZ8031RNL takes in the 25MHz crystal / clock on this pin.
After power-up, both the KSZ8021RNL and KSZ8031RNL can be programmed via
PHY register 1Fh bit [7] to either the 25MHz mode or 50MHz mode.
See also REF_CLK (pin 16) description.
9
REXT
I
Set physical transmit output current
Connect a 6.49K
Ω resistor-to-ground on this pin.
10
MDIO
I/O
Management Interface (MII) Data I/O
This pin has a weak pull-up, is open drain like, and requires an external 1.0K pull-
up resistor.
11
MDC
I
Management Interface (MII) Clock Input
This clock pin is synchronous to the MDIO data pin.
12
RXD1
Ipd/O
RMII Receive Data Output[1]
(2)
13
RXD0
Ipu/O
RMII Receive Data Output[0]
(2)
14
VDDIO
P
3.3V, 2.5V or 1.8V digital VDD
15
CRS_DV /
PHYAD[1:0]
Ipd/O
RMII Mode:
Carrier Sense/Receive Data Valid Output /
Config Mode:
The pull-up/pull-down value is latched as PHYAD[1:0] at the
de-assertion of reset. See “Strapping Options” section for details.
16
REF_CLK
Ipd/O
RMII – 25MHz Mode:
This pin provides the 50MHz RMII reference clock output to
the MAC.
RMII – 50MHz Mode:
This pin is a no connect.
For unmanaged mode (power-up default setting),
KSZ8021RNL is in RMII – 50MHz mode and does not use this pin.
KSZ8031RNL is in RMII – 25MHz mode and outputs the 50MHz RMII
reference clock on this pin.
After power-up, both KSZ8021RNL and KSZ8031RNL can be programmed via PHY
register 1Fh bit [7] to either 25MHz mode or 50MHz mode.
See also XI (pin 8) description.
17
RXER
Ipd/O
RMII Receive Error Output
18
INTRP
Ipu/Opu
Interrupt Output: Programmable Interrupt Output
This pin has a weak pull-up, is open drain like, and requires an external 1.0K pull-
up resistor.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KSZ8021RNL TR 功能描述:以太網(wǎng) IC 3.3V, 100Base-FX Physical Layer Transceiver with RMII support (24-QFN) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8021RNL-EVAL 功能描述:以太網(wǎng)開(kāi)發(fā)工具 3.3V, 100Base-FX Physical Layer Transceiver w/ RMII Support - Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評(píng)估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
KSZ8021RNL-TR 功能描述:1/1 Transceiver Full RMII 24-QFN (4x4) 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):過(guò)期 類型:收發(fā)器 協(xié)議:RMII 驅(qū)動(dòng)器/接收器數(shù):1/1 雙工:全 接收器滯后:- 數(shù)據(jù)速率:- 電壓 - 電源:1.8V，2.5V，3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商器件封裝:24-QFN（4x4） 標(biāo)準(zhǔn)包裝:1
KSZ8031RNL 功能描述:TXRX PHY 100BASE TX 3.3V 24QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,140 系列:AU 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:CAN 電源電壓:5.3 V ~ 27 V 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:管件 其它名稱:935267940512AU5790D14AU5790D14-ND
KSZ8031RNL TR 功能描述:以太網(wǎng) IC 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ RMII Support (24-QFN) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
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