SMSC USB464 - Manual (Page 12)

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 &
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trob
e
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pe
ate
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ri
al
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te
rf
ac
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ngi
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ria
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rf
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& Por
t
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-O
rd
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ing
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ontr
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Y
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t #
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an
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ans
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r
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Y
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t #
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ns
e
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it
c
h
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r
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a
Downs
tr
eam
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e
n
se/
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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
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RAM 6 K
ADDR MAP
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IO
s
Pr
ogr
a
m
Me
m
o
ry
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O
Bus
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W
R_
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0
8 pi
ns
G
P
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1
0
(
C
RD
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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
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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
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o
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ct
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re
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ard
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su
pp
or
t, pl
e
as
e
obt
a
in a
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ser
lic
en
se
f
ro
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th
e x
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-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