SMSC USB4640i ユーザーズマニュアル
High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
Revision 1.0 (06-01-09)
12
SMSC USB4640/USB4640i
DATASHEET
Chapter 4 Block Diagram
Figure 4.1 USB4640/USB4640i Block Diagram
1.2 V
HS
IC
HS
IC
Dat
a &
S
trob
e
Re
pe
ate
r
C
o
n
tro
ller
Se
ri
al
In
te
rf
ac
e
E
ngi
ne
Se
ria
l
In
te
rf
ac
e
Rout
ing
& Por
t
Re
-O
rd
er
ing
Logi
c
Por
t C
ontr
o
ll
er
PH
Y
Por
t #
3
OC
Se
ns
e
Sw
it
ch
Drive
r
Tr
an
sa
cti
o
n
Tr
ans
lato
r
PH
Y
Por
t #
2
OC
Se
ns
e
Sw
it
c
h
Drive
r
USB Dat
a
Downs
tr
eam
OC S
e
n
se/
Pwr
Swi
tc
h
80
51
P
R
OC
ES
SO
R
SF
R
RAM
X
D
AT
A
BR
ID
G
E
+
BUS
ARBITE
R
RO
M
64
K
RAM
6 K
ADDR
MAP
GP
IO
s
Pr
ogr
a
m
Me
m
o
ry
I/
O
Bus
P
W
R_
FET
0
8 pi
ns
G
P
IO
1
0
(
C
RD
_P
W
R
)
GP
IO
3 K
to
ta
l
RAM
EP
2 TX
EP
2 RX
BUS
IN
TFC
EP2
R
X
EP
0 TX
EP
0 RX
SIE
CTL
BR
ID
G
E
BUS
IN
T
F
C
FM
D
U
CTL
AUTO
_
CBW
PR
OC
FMI
BU
S
INT
F
C
USB
Dat
a
Down
st
ream
Fl
ash Med
ia Cards
(r
equ
ire Comb
o
so
cket
)
MS
xD
*
SD/
MMC
/
SD
IO
OC
S
e
n
s
e/
Pw
r S
w
it
ch
SP
I
SPI (4 pi
ns)
3.3
V
1.
8
V
PL
L
24
M
H
z
Cryst
al
1.
8 V
R
eg
*F
o
r x
D
-Pi
ct
u
re
C
ard
TM
su
pp
or
t, pl
e
as
e
obt
a
in a
u
ser
lic
en
se
f
ro
m
th
e x
D
-P
ic
tu
re
Car
d Li
ce
ns
e
of
fic
e.
3.
3 V
1.8 V
R
eg
VD
DCR
HS
IC
Imp
e
danc
e