IDT72P51339L6BBI8 IDT, Integrated Device Technology Inc, IDT72P51339L6BBI8 Datasheet - Page 74

• Manufacturer Part Number: IDT72P51339L6BBI8
• Description: IC FLOW CTRL 36BIT 256-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72P51339L6BBI8

• Configuration: Dual
• Density: 576Kb
• Access Time (max): 3.7ns
• Word Size: 36b
• Organization: 2Kx36x8
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: BGA
• Clock Freq (max): 166MHz
• Supply Current: 150mA
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 256
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72P51339L6BBI8

NOTE:
1. The waveform here shows the PAE flag operation when no queue switches are occurring and a queue selected on both the write and read ports is being written to then read
2. Assertion: 2*RCLK + t
3. If t
Cycle:
*A* Queue 30 of Device 1 is selected on the read port. A queue within Device 2 had previously been selected. The PAE flag output and the data outputs of device 1 are High-Impedance.
*B* No read occurs, REN is HIGH.
*C* No read occurs, REN is HIGH.
*D* No read occurs, REN is HIGH
*E* The PAE flag output now switches to device 1. Word, Wn is read from Q30 due to the FWFT operation. This read operation from Q30 is at the almost empty boundary, therefore
*F* Q15 of device 1 is selected.
*G* The PAE flag goes LOW due to the read from Q30 2 RCLK cycles earlier. Word Wn+1 is read out due to the FWFT operation.
*H* Word, W0 is read from Q15 due to the FWFT operation.
*I* The PAE flag goes HIGH to show that Q15 is not almost empty.
IDT72P51339/72P51349/72P51359/72P51369 1.8V, MQ FLOW-CONTROL DEVICES
(8 QUEUES) 36 BIT WIDE CONFIGURATION 589, 824, 1,179,648, 2,359,296, and 4,718,592
PAE
(Device 1)
PAE
(Device 2)
WCLK
RDADD
RADEN
RCLK
WEN
from at the almost empty boundary.
Flag Latencies:
De-assertion: t
REN
RCLK
PAE
Qout
REN
PAE will go LOW 2 RCLK cycles later.
SKEW2
HIGH-Z
is violated there will be one extra RCLK cycle.
HIGH-Z
t
CLKH
t
AS
t
QS
SKEW2
D
*A*
1
Q
+ RCLK + t
30
RAE
t
ENS
t
QH
n+1 words in Queue
t
AH
RAE
t
CLKL
*B*
t
Figure 60. Almost Empty Flag Timing and Queue Switch (FWFT mode)
ENH
t
SKEW2
*C*
t
RAE
Figure 61. Almost Empty Flag Timing
*D*
t
AEHZ
t
AELZ
t
HIGH-Z
OLZ
74
*E*
t
ENS
t
A
t
t
AS
QS
n+2 words in Queue
D
1
*F*
Q
15
D
1
t
QH
Q
t
AH
t
ENH
30
W
n
*G*
1
t
A
t
RAE
COMMERCIAL AND INDUSTRIAL
D
1
Q
30
*H*
W
t
n+1
TEMPERATURE RANGES
RAE
t
A
D
2
1
Q
AUGUST 4, 2005
15
*I*
W
n+1 words in Queue
0
t
A
t
D
RAE
1
6716 drw69
Q
6716 drw68
15
W
1