參數(shù)資料
型號: IDT72V51443L6BB8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 28/50頁
文件大?。?/td> 0K
描述: IC FLOW CTRL MULTI QUEUE 256-BGA
標(biāo)準(zhǔn)包裝: 1,000
類型: 多隊(duì)列流量控制
安裝類型: 表面貼裝
封裝/外殼: 256-BBGA
供應(yīng)商設(shè)備封裝: 256-BGA(17x17)
包裝: 帶卷 (TR)
其它名稱: 72V51443L6BB8
34
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V51433/72V51443/72V51453 3.3V, MULTI-QUEUE FLOW-CONTROL DEVICES
(16 QUEUES) 18 BIT WIDE CONFIGURATION 589,824, 1,179,648 and 2,359,296 bits
Figure
12.
Read
Queue
Select,
Read
Operation
RCLK
5939
drw14
tAH
tAS
Q
F
RDADD
tQH
tQS
RADEN
REN
tENS
tENH
tENS
tAH
tAS
Q
G
tQH
tQS
Q
OUT
Q
P
W
n-3
tA
Q
P
W
n-2
tA
Previous
Q,
Q
P
W
n-1
tA
Q
P
W
n
tA
Q
F
W
0
PFT
tA
Q
F
W
1
Q
F
W
2
tROV
OV
Previous
Q
1
2
*A*
*B*
*C*
*D*
*E*
*F*
*G*
*H*
PFT
*I*
Cycle
:
*A*
Word
Wn-
3is
read
from
a
previously
selected
queue
Qp
on
the
read
port.
*B*
Wn-
2is
read.
*C*
Reads
are
disabled,
Wn-
1remains
on
the
output
bus.
*D*
A
new
queue,
Q
Fis
selected
for
read
operations.
*E*
Due
to
the
First
Word
Fall
Through
(FWFT)
effect,
a
read
from
the
previous
queue
Qp
will
take
place,
Wn
from
Qp
is
placed
onto
the
output
bus
regardless
of
REN
.
*F*
The
next
word
available
in
the
new
queue,
Q
F-W
0falls
through
to
the
output
bus,
again
this
is
regardless
of
REN
.
*G*
A
new
queue,
Q
G
is
selected
for
read
operations.
(This
queue
is
an
empty
queue).
Word,
W
1is
also
read
from
Q
F.
*H*
Word,
W
1is
read
from
Q
F.
This
occurs
regardless
of
REN
due
to
FWFT.
*I*
Word
W
2from
Q
Fremains
on
the
output
bus
because
Q
G
is
empty.
The
Output
Valid
Flag,
OV
goes
HIGH
to
indicate
that
the
current
word
is
not
valid,
i.e.
Q
G
is
empty.
W
2is
the
last
word
in
Q
G
.
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