参数资料
型号: KSZ8873FLL
厂商: Micrel Inc
文件页数: 21/115页
文件大小: 0K
描述: IC ETHERNET SW 3PORT 64LQFP
产品培训模块: KSZ8873 Ethernet Switches
特色产品: KSZ8873 Ethernet Switch Controller
标准包装: 160
控制器类型: 以太网开关控制器
接口: MII
电源电压: 1.8V,2.5V,3.3V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
其它名称: 576-3631
KSZ8873FLL-ND
Micrel, Inc.
KSZ8873MLL/FLL/RLL
September 20, 2013
13
Revision 1.6
Pin Description and I/O Assignment
Pin Number
Pin Name
Type
(1)
Description
1
RXM1
I/O
Physical receive or transmit signal (– differential)
2
RXP1
I/O
Physical receive or transmit signal (+ differential)
3
AGND
GND
Analog ground
4
TXM1
I/O
Physical transmit or receive signal (– differential)
5
TXP1
I/O
Physical transmit or receive signal (+ differential)
6
VDDA_3.3
P
3.3V analog VDD
7
AGND
GND
Analog ground.
8
ISET
O
Set physical transmit output current.
Pull-down this pin with an 11.8K 1% resistor to ground.
9
VDDA_1.8
P
1.8V analog core power input from VDDCO (Pin 56).
10
RXM2
I/O
Physical receive or transmit signal (– differential)
11
RXP2
I/O
Physical receive or transmit signal (+ differential)
12
AGND
GND
Analog ground.
13
TXM2
I/O
Physical transmit or receive signal (– differential)
14
TXP2
I/O
Physical transmit or receive signal (+ differential)
15
FXSD2
I
MLL/RLL: connect to analog ground by pull-down resistor.
FLL: Fiber signal detect / factory test pin
16
PWRND
Ipu
Chip power down input (active low).
17
X1
I
25MHz or 50MHz crystal/oscillator clock connections.
Pins (X1, X2) connect to a crystal. If an oscillator is used, X1 connects to a 3.3V
tolerant oscillator and X2 is a no connect.
Note: Clock is ± 50ppm for crystal and oscillator, the clock should be applied to X1
pin before reset voltage goes high.
18
X2
O
19
SMTXEN3
Ipu
Switch MII transmit enable
20
SMTXD33/
EN_REFCLKO_3
lpu/I
MLL/FLL: Switch MII transmit data bit 3
RLL: Strap option: RMII mode Clock selection
PU = Enable REFCLKO_3 output
PD = Disable REFCLKO_3 output
21
SMTXD32/
NC
Ipu
MLL/FLL: Switch MII transmit data bit 2
RLL: No connection
22
SMTXD31
Ipu
Switch MII/RMII transmit data bit 1
23
SMTXD30
Ipu
Switch MII/RMII transmit data bit 0
24
GND
Digital ground
25
VDDIO
P
3.3V, 2.5V or 1.8V digital VDD input power supply for IO with well decoupling
capacitors.
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