IDT72P51769L6BBI IDT, Integrated Device Technology Inc, IDT72P51769L6BBI Datasheet - Page 37

• Manufacturer Part Number: IDT72P51769L6BBI
• Description: IC FLOW CTRL 36BIT 256-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72P51769L6BBI

• 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: 72P51769L6BBI

MARK Operational Notes:
In FIFO Mode
Write Port
IDT72P51749/72P51759/72P51769 1.8V, MULTI-QUEUE FLOW-CONTROL DEVICES
(128 QUEUES) 36 BIT WIDE CONFIGURATION 1,179,648, 2,359,296, and 4,718,592
bits
- MARKing can only occur during a Queue switch cycle
- The entire Queue is MARKed at a time.
- In IDT Standard/FWFT mode, MARK is used to mark the first location
- In IDT Standard/FWFT mode the MARK can NOT be moved within the
of the Queue.
queue.
Read Queue MARK
Write Queue MARK
1
1
A
WCLK
WADEN
1
1
A
RCLK
RADEN
Figure 20. MARKing a Queue in FIFO Mode - Read Queue MARK
RADEN
WADEN
Figure 19. MARKing a Queue in FIFO Mode - Write Queue MARK
B
1
0
B
1
0
Write Queue
Read Queue
Select Cycle
Select Cycle
A
A
This rising edge of
WCLK is the start of the
1
This rising edge of
RCLK is the start
of the
st
cycle
Selects the Queue and MARK the Queue
Selects the Queue and MARK the Queue
1
st
cycle
37
Write Queue
MARK Cycle
Read Port
Read Queue
MARK Cycle
Selects a Queue
- MARKing can only occur during a Queue switch cycle
- Only the first location of the Queue can be MARKed in Standard /FWFT
- In IDT Standard mode the MARK can NOT be moved location to location
B
Selects a Queue
B
mode.
within the queue.
ACTI ON
ACTI ON
COMMERCIAL AND INDUSTRIAL
6714 drw36
6714 drw37
TEMPERATURE RANGES
SEPTEMBER 27, 2004