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参数资料
| 型号： | IDT72V51246L6BB8 |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 32/56页 |
| 文件大小： | 0K |
| 描述： | IC FLOW CTRL MULTI QUEUE 256-BGA |
| 标准包装： | 1,000 |
| 类型： | 多队列流量控制 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 256-BBGA |
| 供应商设备封装： | 256-BGA（17x17） |
| 包装： | 带卷 (TR) |
| 其它名称： | 72V51246L6BB8 |
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38
IDT72V51236/72V51246/72V51256 3.3V, MULTI-QUEUE FLOW-CONTROL DEVICES
(4 QUEUES) 36 BIT WIDE CONFIGURATION 589,824, 1,179,648 and 2,359,296 bits
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
Figure 14. Read Queue Selection with Reads Disabled
Figure 15. Read Queue Select, Read Operation and
OE Timing
RCLK
5937 drw17
tAH
tAS
Qn
RDADD
tQH
tQS
RADEN
REN
tENS
tAH
tAS
QP
tQH
tQS
QOUT
QP WD
tA
QP WD+1
tA
QP WD+2
tA
Qn WX+1
OV
tENS
tENH
tA
QP WD+3
QP WD+4
*A*
*B*
*C*
*D*
*E*
*F*
*G*
*H*
*I*
*J*
tA
tENH
Qn WX
RCLK
RADEN
tQH
tQS
tAH
tAS
RDADD
QA
OV
5937 drw18
Qout
tROV
tOLZ
tA
QA W0
PFT
tA
tENS
REN
tAH
tAS
QB
tQH
tQS
OE
tOE
tA
Previous Data in O/P Register
tA
QA W1
No Read
QB is Empty
tROV
*B*
*C*
*E*
*F*
*D*
*A*
*H*
*I*
*G*
tENH
tENS
QA W2
QA W3
QA W4
tOHZ
Cycle:
*A* Word Wd+1 is read from the previously selected queue, Qp.
*B* Reads are disabled, word Wd+1 remains on the output bus.
*C* A new queue, Qn is selected for read port operations.
*D* Due to FWFT operation Word, Wd+2 of Qp is read out regardless of
REN.
*E* The next available word Wx of Qn is read out regardless of
REN, 2 RCLK cycles after queue selection. This is FWFT operation.
*F* The queue, Qp is again selected.
*G* Word Wx+1 is read from Qn regardless of
REN, this is due to FWFT.
*H* Word Wd+3 is read from Qp, this read occurs regardless of
REN due to FWFT operation.
*I* Word Wd+4 is read from Qp.
*J* Reads are disabled on this cycle, therefore no further reads occur.
NOTES:
1. The Output Valid flag,
OV is HIGH therefore the previously selected queue has been read to empty. The Output Enable input is Asynchronous, therefore the Qout output bus
will go to Low-Impedance after time tOLZ.
The data currently on the output register will be available on the output after time tOE. This data is the previous data on the output register, this is the last word read out of the
previous queue.
2. In expansion mode the
OE inputs of all devices should be connected together. This allows the output busses of all devices to be High-Impedance controlled.
Cycle:
*A* Queue A is selected for reads. No data will fall through on this cycle, the previous queue was read to empty.
*B* No data will fall through on this cycle, the previous queue was read to empty.
*C* Word, W0 from Qa is read out regardless of
REN due to FWFT operation. The OV flag goes LOW indicating that Word W0 is valid.
*D* Reads are disabled therefore word, W0 of Qa remains on the output bus.
*E* Reads are again enabled so word W1 is read from Qa.
*F* Word W2 is read from Qa.
*G* Queue, Qb is selected on the read port. This queue is actually empty. Word, W3 is read from Qa.
*H* Word, W4 falls through from Qa.
*I* Output Valid flag,
OV goes HIGH to indicate that Qb is empty. Data on the output port is no longer valid.
Output Enable is taken HIGH, this is Asynchronous so the output bus goes to High-Impedance after time, tOHZ.
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| IDT72V51246L7-5BB | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
| IDT72V51246L7-5BB8 | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
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| IDT72V51253L6BB8 | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
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