IDT72P51559L6BBI8 IDT, Integrated Device Technology Inc, IDT72P51559L6BBI8 Datasheet - Page 45

• Manufacturer Part Number: IDT72P51559L6BBI8
• Description: IC FLOW CTRL 36BIT 256-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72P51559L6BBI8

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72P51559L6BBI8

NOTE:
D = Queue Depth
m = Almost Full Offset value.
PAF Timing
Assertion:
De-assertion: Read to PAF HIGH: t
PAFn Timing
Assertion:
De-assertion: Read to PAFn HIGH: t
* If a queue switch is occurring on the write port at the point of flag assertion or de-assertion
there may be one additional WCLK clock cycle delay.
IDT72P51539/72P51549/72P51559/72P51569 1.8V, MQ FLOW-CONTROL DEVICES
(32 QUEUES) 36 BIT WIDE CONFIGURATION 589, 824, 1,179,648, 2,359,296, and 4,718,592
in36 to out36
(Both ports selected for same queue when the 1
in36 to out36
(Write port only selected for same queue when the D-m Writes
1
in36 to out18
in36 to out9
in18 to out36
in9 to out36
Word is written in until the boundary is reached)
In36 to out36 (Almost Empty Mode)
(Both ports selected for same queue
when the 1
In36 to out36 (Packet Mode)
(Both ports selected for same queue
when the 1
In36 to out18
(Both ports selected for same queue
when the 1
In36 to out9
(Both ports selected for same queue
when the 1
In18 to out36
(Both ports selected for same queue
when the 1
In9 to out36
(Both ports selected for same queue
when the 1
st
Word is written in until the boundary is reached) (see note below for timing)
Programmable Almost Full Flag, PAF & PAFn Bus Boundary
I/O Set-Up
Default values:
st
st
st
st
st
st
Write Operation to PAF LOW: 2 WCLK + t
If t
Write Operation to PAFn LOW: 2 WCLK* + t
If t
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
SKEW3
SKEW2
I/O Set-Up
Output Ready, EF Flag Boundary
is violated there may be 1 added clock: t
is violated there may be 1 added clock: t
TABLE 9 — FLAG OPERATION BOUNDARIES & TIMING
if DF is LOW at Master Reset then m = 8
if DF is HIGH at Master Reset then m= 128
SKEW2
SKEW3
+ WCLK + t
+ WCLK* + t
EF Goes LOW after Last Read
EF Goes LOW after Last Read
EF Goes LOW after Last Read
EF Goes LOW after Last Read
EF Goes LOW after Last Read
EF Goes LOW after Last Read
st
EF Boundary Condition
WAF
PAF/PAFn Goes LOW after
D+1-m Writes
(see note below for timing)
PAF/PAFn Goes LOW after
PAF/PAFn Goes LOW after
D-m Writes (see below for timing)
PAF/PAFn Goes LOW after
D-m Writes (see below for timing)
PAF/PAFn Goes LOW after
(see note below for timing)
PAF/PAFn Goes LOW after
(see note below for timing)
([D+1-m] x 2) Writes
([D+1-m] x 4) Writes
WAF
PAF
PAF & PAFn Boundary
PAF
SKEW3
SKEW2
+ 2 WCLK* + t
+ 2 WCLK + t
WAF
PAF
45
NOTE:
D = Queue Depth
FF Timing
Assertion:
De-assertion:
In36 to out36
(Both ports selected for same queue
when the 1
In36 to out36
(Write port only selected for queue
when the 1
In36 to out18
(Both ports selected for same queue
when the 1
In36 to out18
(Write port only selected for queue
when the 1
In36 to out9
(Both ports selected for same queue
when the 1
In36 to out9
(Write port only selected for queue
In18 to out36
(Both ports selected for same queue
when the 1
In18 to out36
(Write port only selected for queue
when the 1
In9 to out36
(Both ports selected for same queue
when the 1
In9 to out36
(Write port only selected for queue
when the 1
when the 1
Write Operation to FF LOW: t
Read to FF HIGH: t
If t
SKEW1
I/O Set-Up
is violated there may be 1 added clock: t
st
st
st
st
st
st
st
st
st
st
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
Word is written in)
SKEW1
+ t
Full Flag, FF Boundary
WFF
WFF
COMMERCIAL AND INDUSTRIAL
FF Goes LOW after D+1 Writes
(see note below for timing)
FF Goes LOW after D Writes
(see note below for timing)
FF Goes LOW after D Writes
(see note below for timing)
FF Goes LOW after D Writes
(see note below for timing)
FF Goes LOW after D Writes
(see note below for timing)
FF Goes LOW after D Writes
(see note below for timing)
FF Goes LOW after ([D+1] x 2) Writes
(see note below for timing)
FF Goes LOW after (D x 2) Writes
(see note below for timing)
FF Goes LOW after ([D+1] x 4) Writes
(see note below for timing)
FF Goes LOW after (D x 4) Writes
(see note below for timing)
FF Boundary Condition
TEMPERATURE RANGES
SKEW1
FEBRUARY 13, 2009
+WCLK +t
WFF