IDT72P51777L7-5BBI IDT, Integrated Device Technology Inc, IDT72P51777L7-5BBI Datasheet - Page 29

• 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

the SENI signal of the first device in a chain must be held LOW. The SENO signal
of a device should connect to the SENI of the next device in the chain. The SENO
of the final device is used to indicate that the programming of all devices is
complete. When the master device (ID=’000') SENO signal goes LOW the
internal programming is complete and queue write/read operation may begin.
Please refer to Figure 41, Parallel Programming for signal timing details.
MODES OF OPERATION
STANDARD MODE OPERATION
and BOI Mode.
IDT STANDARD MODE VS. BOI MODE
side is affected by these two modes, the write side is identical in both modes. In
IDT72P51767/72P51777 1.8V, MULTI-QUEUE FLOW-CONTROL DEVICES
(128 QUEUES) 40 BIT WIDE CONFIGURATION 5,898,240 and 11,796,480 bits
When Multi-Queue devices are connected in an Expansion Configuration,
The 10G Multi-queue supports two modes of operation, IDT Standard Mode
The device mode is configured during the master reset cycle. Only the read
Master
Device
Device Type
Expansion
Selected
Slave
Device
Programming
Serial
Figure 6. Device Programming Hierarchy
Mode Selected
Master Reset Cycle
Programming
Programming
Device
Default
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6724 drw08
Parallel Queue
PROGRAMMING HIERARCHY
expansion device type, the desired programming mode and the device
operating mode during the master reset cycle (i.e. on the rising edge of Master
Reset (MRS)). The second stage is to set values such as PAE/PAF, number
of queues, queue depth, etc. using the programming mode (serial, parallel,
default) selected in stage 1. Refer to Figure 6, Device Programming Hierarchy.
Programming
IDT standard mode, the device operates as the IDT72P51769 (4M multi-
queue) device as shown in Figure 49 and 50.
queue upon reentry to that queue. This allows for a customer to monitor a data
bit and stop reading based on the output (e.g., End of Packet or EOP). Note:
the EF flag is always updated “real time” using the read count in both modes.
Configuring the device is a 2 stage sequence. The first stage is to set the
The other option, or BOI mode, has the device reissue the last data from a
BOI Mode or IDT Standard mode
Device Operating Mode
Selected
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
FEBRUARY 11, 2009