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78Q2123S/F
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P38
DS
_
21x
3_
00
1
7
8Q
21
23
/78Q
21
33
Dat
a Sh
eet
Re
v. 1.6
25
4.5
Di
git
al T
iming
C
h
ara
ct
eri
sti
cs
4.5.
1
RST
Characteristi
cs
T
reset
VCC
Oscillator
RST
Figure
1
:
RS
T Pulse Dur
a
tion
P
ara
meter
S
y
m
b
ol
Conditions
Min
No
m
M
ax
Uni
t
RST
Pu
lse A
s
ser
ti
on
Tres
et
V
CC = 3.
3V
and
oscillato
r stab
ilized
30
O
scillator
Clock
Cy
cles
4.5.
2
MII T
r
an
smit
Int
erf
ace
Ch
ara
cter
is
ti
cs
S
y
m
b
ol
Conditi
ons
Min
Nom
M
ax
Unit
S
etu
p Tim
e:
TX
_C
LK
to
T
XD[3:0]
, T
X_
EN, T
X_ER
TX
SU
15
ns
Ho
ld Time: TX_
CLK to
T
XD[3:0]
, T
X_
EN, T
X_ER
TX
HD
0
ns
CKI
N
-
to
-
T
X
_
CLK
Dela
y
T
C
K
IN
0
40
ns
T
X_CLK D
uty
-
Cy
cle
40
60
%
Figur
e
2
:
Tra
ns
m
i
t
I
nputs
to the
78Q
2
12
3/
78Q
213
3
7
8Q
21
23/7
8Q
21
33
Dat
a Sh
eet
DS
_
21x
3_
00
1
26
Re
v. 1.6
4.5.
3
MI
I Recei
ve Interface
Ch
ara
cter
is
ti
cs
S
y
m
b
ol
Conditi
ons
Min
Nom
M
ax
Unit
Rec
ei
ve Ou
t
p
ut
Del
ay
:
RX_
CLK t
o RX
D[3:0],
RX_
DV, RX_E
R
RX
DLY
10
30
ns
RX_
CLK Duty
-
Cyc
l
e
40
60
%
Figure
3
:
R
ec
eiv
e O
ut
put
s f
ro
m t
he
78Q
2
12
3/
78Q
2
13
3
4.6
M
D
IO Int
erfa
ce Input
T
im
ing
Ch
ara
cter
is
ti
cs
S
y
m
b
ol
C
onditions
Min
Nom
M
ax
Uni
t
S
etu
p Tim
e:
MDC t
o M
DI
O
MIO
SU
10
ns
Hold Time: MDC t
o M
DI
O
MI
O
HD
10
ns
Max Fr
eq
u
en
c
y: MD
C
F
ma
x
25
MHz
Figure
4
:
MDIO
as
an In
pu
t
to
th
e
78Q
2
12
3/
78Q2
133
DS
_
21x
3_
00
1
7
8Q
21
23
/78Q
21
33
Dat
a Sh
eet
Re
v. 1.6
27
4.6.
1
M
DIO
I
nterf
ac
e O
utput
T
i
ming
Ch
ara
ct
er
istics
S
ym
b
ol
Conditi
ons
Min
No
m
M
ax
Uni
t
MDC
to M
DI
O
d
ata del
ay
MC2
D
30
ns
M
DIO
o
utp
ut f
ro
m high Z
t
o d
riven
aft
er M
DC
MCZ2
D
30
ns
MDI
O
ou
t
pu
t from
dri
ven
t
o h
igh
Z aft
er MD
C
MCD2Z
30
ns
Figure
5
:
M
D
I
O a
s an
Ou
tp
ut
to t
he
78Q
212
3/78Q
2
13
3
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P38
78Q2123S/F
Mfr. #:
Buy 78Q2123S/F
Manufacturer:
Maxim Integrated
Description:
Ethernet ICs 10/100 Base Tx Transcvr w/MDIX
Lifecycle:
New from this manufacturer.
Delivery:
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EMS
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