Micrel, Inc. M9999-030106 8 March 2006 Pin Number Pin Name Type(Note 1)
參數(shù)資料
型號： KSZ8721BI TR
廠商： Micrel Inc
文件頁數(shù)： 31/32頁
文件大?。?/td> 0K
描述： TXRX PHY 10/100 2.3.3/5V 48-SSOP
標(biāo)準(zhǔn)包裝： 1,000
類型： 收發(fā)器
驅(qū)動器/接收器數(shù)： 1/1
規(guī)程： MII，RMII
電源電壓： 2.375 V ~ 2.625 V
安裝類型： 表面貼裝
封裝/外殼： 48-BSSOP（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 48-SSOP
包裝： 帶卷 (TR)
配用： 576-1627-ND - BOARD EVALUATION FOR KSZ8721BMC
576-1626-ND - BOARD EVALUATION FOR KSZ8721BL
其它名稱： KSZ8721BITR
KSZ8721BITR-ND
KS8721B/BT
Micrel, Inc.
M9999-030106
8
March 2006
Pin Number
Pin Name
Type(Note 1) Pin Function
37
REXT
I
External resistor (6.49kΩ) connects to REXT and GNDRX.
38
VDDRCV
Pwr
Analog 2.5V power supply.
39
GND
Ground
40
TX-
O
Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.
41
TX+
O
Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.
42
VDDTX
Pwr
Transmitter 2.5V power supply.
43
GND
Ground.
44
GND
Ground.
45
XO
O
XTAL feedback: Used with XI for Xtal application.
46
XI
I
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock
47
VDDPLL
Pwr
Analog PLL 2.5V power supply.
48
RST#
Ipu
Chip Reset: Active low, minimum of 50s pulse is required
Note 1. Pwr = power supply
GND = ground
I = input
O = output
I/O = bi-directional
Ipu = input w/ internal pull-up
Ipd = input w/ internal pull-down
Ipd/O = input w/ internal pull-down during reset, output pin otherwise
Ipu/O = input w/ internal pull-up during reset, output pin otherwise
PU = strap pin pull-up
PD = strap pin pull-down
NC = No connect
37
REXT
I
External resistor (6.49kΩ) connects to REXT and GNDRX.
38
VDDRCV
Pwr
Analog 2.5V power supply.
39
GND
Ground
40
TX-
O
Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.
41
TX+
O
Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.
42
VDDTX
Pwr
Transmitter 2.5V power supply.
43
GND
Ground.
44
GND
Ground.
45
XO
O
XTAL feedback: Used with XI for Xtal application.
46
XI
I
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock
47
VDDPLL
Pwr
Analog PLL 2.5V power supply.
48
RST#
Ipu
Chip Reset: Active low, minimum of 50s pulse is required
Pin Number
Pin Name
Type
37
REXT
I
External resistor (6.49kΩ) connects to REXT and GNDRX.
38
VDDRCV
Pwr
Analog 2.5V power supply.
39
GND
Ground
40
TX-
O
Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.
41
TX+
O
Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.
42
VDDTX
Pwr
Transmitter 2.5V power supply.
43
GND
Ground.
44
GND
Ground.
45
XO
O
XTAL feedback: Used with XI for Xtal application.
46
XI
I
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock
47
VDDPLL
Pwr
Analog PLL 2.5V power supply.
48
RST#
Ipu
Chip Reset: Active low, minimum of 50s pulse is required
Pin Number
Pin Name
Type
37
REXT
I
External resistor (6.49kΩ) connects to REXT and GNDRX.
38
VDDRCV
Pwr
Analog 2.5V power supply.
39
GND
Ground
40
TX-
O
Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.
41
TX+
O
Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.
42
VDDTX
Pwr
Transmitter 2.5V power supply.
43
GND
Ground.
44
GND
Ground.
45
XO
O
XTAL feedback: Used with XI for Xtal application.
46
XI
I
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock
47
VDDPLL
Pwr
Analog PLL 2.5V power supply.
48
RST#
Ipu
Chip Reset: Active low, minimum of 50s pulse is required
Pin Function
37
REXT
I
External resistor (6.49kΩ) connects to REXT and GNDRX.
38
VDDRCV
Pwr
Analog 2.5V power supply.
39
GND
Ground
40
TX-
O
Transmit Outputs: Differential transmit output for 100BaseTX/FX or 10BaseT.
41
TX+
O
Transmit Outputs: Differential transmit output for FX, 100BaseTX/FX or 10BaseT.
42
VDDTX
Pwr
Transmitter 2.5V power supply.
43
GND
Ground.
44
GND
Ground.
45
XO
O
XTAL feedback: Used with XI for Xtal application.
46
XI
I
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock
47
VDDPLL
Pwr
Analog PLL 2.5V power supply.
48
RST#
Ipu
Chip Reset: Active low, minimum of 50s pulse is required
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