LAN83C180_01 Datasheet, PDF (19/22 Pages) SMSC Corporation – 10/100 Fast Ethernet PHY Transceiver

AC ELECTRICAL CHARACTERISTICS
Recommended operating conditions apply except where stated.
CHARACTERISTIC
REFCLK
Frequency
Duty cycle
RX_CLK
Frequency
Duty cycle
Frequency
Duty cycle
TX_CLK
Frequency
Duty cycle
Frequency
Duty cycle
MDC
Frequency
Minimum high/low
VALUE
MIN MAX
UNITS
CONDITIONS
25±100ppm
45
55
MHz
%
25±100ppm
40
60
2.5±100ppm
40
60
MHz
%
MHz
%
100Mbs mode
100Mbs mode
10Mbs mode
10Mbs mode
25±100ppm
40
60
2.5±100ppm
40
60
MHz
%
MHz
%
100Mbs mode
100Mbs mode
10Mbs mode
10Mbs mode
-
2.5
160
-
MHz
ns
LED/PULL
LED
LED/PULL
LED
LED
5k (5 )
TX_CLK
1
DGND1
2
TX_EN
FDST
3
LNKST
4
SPDST
5
ACTST
COLST
6
7
8
DVDD1
9
RXGND3
10
RXVDD3
11
PA4
nRESET
12
13
RXVDD2
14
RXGND2
15
PA3
16
48
RXEN
47
DVDD3
46
MDC
45
MDIO
44
DGND3
43
RefCLK
42
OSCVDD
41
XTAL1
25MHz
40
XTAL2
39
OSCGND
38
TXGND4
37
TXVDD4
36
TXVDD3
35
TXGND3
34
TxRef100
33
TxRef10
C1
C2
VDD
49.9
0.1uF
34 (1 ) 34 (1 )
16.2
(1 )
16.2
(1 )
0.01uF
1.1k
(1 )
1.1k
(1 )
1:1 MAGNETICS
FIGURE 3 - EXTERNAL COMPONENTS
SMSC DS – LAN83C180
Page 19
Rev. 08/24/2001