IDT72P51777L7-5BBI IDT, Integrated Device Technology Inc, IDT72P51777L7-5BBI Datasheet - Page 79

• Manufacturer Part Number: IDT72P51777L7-5BBI
• Description: IC FLOW CTRL 40BIT 376-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72P51777L7-5BBI

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72P51777L7-5BBI

Cycle:
*A*
*AA* Status word 4 of device 0 is selected for the PAFn bus. The bus is currently providing status of a previously selected status word, Quad Y of device X.
*B*
*BB* Queue 31 of device 0 is selected on the write port.
*CC* PAFn continues to show status of Quad4 D0.
*DD* No write operation.
*E*
*EE* PAF[7] goes HIGH to show that D0 Q31 is not almost empty due to the read on cycle *C*.
*F*
*FF* Word, Wy+1 is written into D0 Q31.
*GG* PAF[7] and the discrete PAF flag go LOW to show the write on cycle *DD* causes Q31 of D0 to again go almost full.
*H*
IDT72P51767/72P51777 1.8V, MULTI-QUEUE FLOW-CONTROL DEVICES
(128 QUEUES) 40 BIT WIDE CONFIGURATION 5,898,240 and 11,796,480 bits
Device 0
Bus
Queue 31 of device 0 is selected for read operations.
The last word in the output register is available on Qout. OE was previously taken LOW so the output bus is in Low-Impedance.
No read operation.
The PAFn bus is updated with the status word selected on the previous cycle, D0 Quad 4. PAF[7] is LOW showing the status of queue 31.
The PAFn outputs of the device previously selected on the PAFn bus go to High-Impedance.
No read operations occur, REN is HIGH.
The active queue PAF flag of device 0 goes from High-Impedance to Low-Impedance.
Word, Wy is written into D0 Q31.
Queue 2 of Device 6 is selected for read operations.
Word, Wy+2 is written into D0 Q31.
No read operation.
Device 0
WRADD
WADEN
RDADD
RADEN
WCLK
RCLK
ESTR
FSTR
PAFn
PAFn
PAFn
WEN
Prev.
REN
Qout
PAF
OE
Din
t
D
D
QS
t
AS
t
t
X
X
STS
AS
SW y
SW y
000 11111
D0Q31
D0 quad3
t
*A*
OLZ
*AA*
000 00011
t
t
t
AH
t
QH
STH
AH
t
QS
t
AS
W
*B*
HIGH - Z
X
D0 Q31
*BB*
t
AH
t
QH
Figure 59. PAF
HIGH-Z
*C*
*CC*
t
A
t
1
SKEW3
t
STS
PAF
PAF
PAF n - Direct Mode, Flag Operation
PAF
t
t
AS
PAFHZ
t
PAFLZ
111 00000
D7 SW 0
D0SW3
D0SW3
*D*
W
*DD*
X +1
t
79
t
AH
2
STH
0xxx xxxx
0xxx xxxx
t
ENS
*E*
t
DS
Word W
D0 Q31
*EE*
t
A
t
QS
3
t
t
AS
DH
y
t
t
PAF
PAFLZ
110 00010
D6Q2
*F*
D0SW3
D0SW3
W
D0 Q31
t
DS
D-M+1
D0 Q31
*FF*
W
t
QH
t
AH
y+1
HIGH-Z
t
DH
1xxx xxxx
1xxx xxxx
*G*
t
DS
COMMERCIAL AND INDUSTRIAL
t
A
D0 Q31
*GG*
W
y+2
t
DH
t
ENH
t
t
PAF
TEMPERATURE RANGES
WAF
*H*
W
D0 Q31
D - M + 2
FEBRUARY 11, 2009
D0SW3
D0SW3
*I*
0xxx xxxx
0xxx xxxx
t
A
D6 Q2
6724 drw73
W
0