IDT72P51369L6BBI8 IDT, Integrated Device Technology Inc, IDT72P51369L6BBI8 Datasheet - Page 38

• Manufacturer Part Number: IDT72P51369L6BBI8
• Description: IC FLOW CTRL 36BIT 256-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72P51369L6BBI8

• Configuration: Dual
• Density: 4.5Mb
• Access Time (max): 3.7ns
• Word Size: 36b
• 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: 72P51369L6BBI8

Un-MARKing a Queue
UN-MARKing a Queue in FIFO Mode
UN-MARK Operational Notes:
In FIFO Mode
Write Port
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
- Un-MARKing can only occur during a Queue switch cycle.
- In FIFO Mode, UN-MARKing a Queue can be accomplished by either
- Note only 1 queue can be marked at any given time.
- In Standard/FIFO mode the MARK can NOT be moved location to
switching to the same queue or switching to another queue.
location within the queue.
Read Queue UN-MARK
Write Queue UN-MARK
1
A
1
A
Figure 22. UN-MARKing a Queue in FIFO Mode - Read Queue UN-MARK
Figure 21. UN-MARKing a Queue in FIFO Mode - Write Queue UN-MARK
RCLK
RADEN
WCLK
WADEN
RADEN
WADEN
B
0
B
0
Read Queue
Select Cycle
Write Queue
Select Cycle
A
A
Selects a Queue and UN-MARK the Queue
RCLK is the start
This rising edge of
Selects a Queue and UN-MARK the Queue
of the
This rising edge of
WCLK is the start
of the
1
1
st
st
cycle
cycle
38
Read Queue
MARK Cycle
Read Port
Write Queue
MARK Cycle
- Un-MARKing can only occur during a Queue switch cycle.
- In Standard/FIFO mode, UN-MARKing a Queue can be accomplished
- Note only 1 queue can be marked at any given time.
- In Standard/FIFO mode the MARK can NOT be moved location to
B
B
by either switching to the same queue or switching to another queue.
location within the queue.
ACTI ON
ACTI ON
COMMERCIAL AND INDUSTRIAL
6716 drw39
6716 drw38
TEMPERATURE RANGES
AUGUST 4, 2005