参数资料
型号: IDT72T18125L5BB
厂商: IDT, Integrated Device Technology Inc
文件页数: 13/55页
文件大小: 0K
描述: IC FIFO 524X18 2.5V 5NS 240BGA
标准包装: 1
系列: 72T
功能: 异步,同步
存储容量: 9M(512K x 18)
数据速率: 10MHz
访问时间: 5ns
电源电压: 2.375 V ~ 2.625 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 240-BGA
供应商设备封装: 240-PBGA(19x19)
包装: 托盘
其它名称: 72T18125L5BB
20
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72T1845/55/65/75/85/95/105/115/125 2.5V TeraSync 18-BIT/9-BIT FIFO 2Kx18/4Kx9, 4Kx18/
8Kx9, 8Kx18/16Kx9, 16Kx18/32Kx9, 32Kx18/64Kx9, 64Kx18/128Kx9, 128Kx18/256Kx9, 256Kx18/512Kx9, 512Kx18/1Mx9
FEBRUARY 10, 2009
Figure 3. Programmable Flag Offset Programming Sequence (Continued)
x9 to x9 Mode
All Other Modes
# of Bits Used:
12 bits for the IDT72T1845
13 bits for the IDT72T1855
14 bits for the IDT72T1865
15 bits for the IDT72T1875
16 bits for the IDT72T1885
17 bits for the IDT72T1895
18 bits for the IDT72T18105
19 bits for the IDT72T18115
20 bits for the IDT72T18125
Note: All unused bits of the
LSB & MSB are don’t care
# of Bits Used:
Note: All unused bits of the
LSB & MSB are don’t care
11 bits for the IDT72T1845
12 bits for the IDT72T1855
13 bits for the IDT72T1865
14 bits for the IDT72T1875
15 bits for the IDT72T1885
16 bits for the IDT72T1895
17 bits for the IDT72T18105
18 bits for the IDT72T18115
19 bits for the IDT72T18125
D/Q8
D/Q0
EMPTY OFFSET REGISTER
1
2
3
4
5
6
7
8
1st Parallel Offset Write/Read Cycle
2nd Parallel Offset Write/Read Cycle
3rd Parallel Offset Write/Read Cycle
4th Parallel Offset Write/Read Cycle
D/Q8
D/Q0
EMPTY OFFSET REGISTER
9
10
11
12
13
14
15
16
D/Q8
D/Q0
FULL OFFSET REGISTER
1
2
3
4
5
6
7
8
D/Q8
D/Q0
EMPTY OFFSET REGISTER
17
5th Parallel Offset Write/Read Cycle
D/Q8
D/Q0
FULL OFFSET REGISTER
9
10
11
12
13
14
15
16
6th Parallel Offset Write/Read Cycle
D/Q8
D/Q0
17
FULL OFFSET REGISTER
IDT72T1895/72T18105/72T18115/72T18125(1) x9 Bus Width
D/Q8
D/Q0
EMPTY OFFSET REGISTER
1
2
3
4
5
6
7
8
1st Parallel Offset Write/Read Cycle
2nd Parallel Offset Write/Read Cycle
3rd Parallel Offset Write/Read Cycle
D/Q8
D/Q0
EMPTY OFFSET REGISTER
9
10
11
12
13
14
15
16
D/Q8
D/Q0
FULL OFFSET REGISTER
1
2
3
4
5
6
7
8
4th Parallel Offset Write/Read Cycle
D/Q8
D/Q0
FULL OFFSET REGISTER
9
10
11
12
13
14
15
16
IDT72T1845/72T1855/72T1865/72T1875/
72T1885/72T1895(1) x9 Bus Width
D/Q17
D/Q0
D/Q16
EMPTY OFFSET REGISTER
Data Inputs/Outputs
# of Bits Used
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1st Parallel Offset Write/Read Cycle
Data Inputs/Outputs
2nd Parallel Offset Write/Read Cycle
1
2
3
4
5
6
7
8
10
11
12
13
14
15
9
FULL OFFSET REGISTER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
10
11
12
13
14
15
9
Non-Interspersed
Parity
Interspersed
Parity
D/Q17
D/Q0
D/Q16
D/Q8
16
IDT72T1845/72T1855/72T1865/72T1875/
72T1885/72T1895 x18 Bus Width
4666 drw 06
D/Q17
D/Q0
D/Q16
EMPTY OFFSET (LSB) REGISTER
Data Inputs/Outputs
# of Bits Used
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
EMPTY OFFSET (MSB) REGISTER
Data Inputs/Outputs
17
16
18
1st Parallel Offset Write/Read Cycle
2nd Parallel Offset Write/Read Cycle
Data Inputs/Outputs
3rd Parallel Offset Write/Read Cycle
4th Parallel Offset Write/Read Cycle
1
2
3
4
5
6
7
8
10
11
12
13
14
15
9
18 17
FULL OFFSET (LSB) REGISTER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
10
11
12
13
14
15
9
FULL OFFSET (MSB) REGISTER
17
18
18 17
Non-Interspersed
Parity
Interspersed
Parity
D/Q17
D/Q0
D/Q16
D/Q17
D/Q0
D/Q16
D/Q17
D/Q0
D/Q16
D/Q8
16
IDT72T18105/72T18115/72T18125 x18 Bus Width
5909 drw07
19
18
19
20
18
19
20
NOTES:
1. When programming the IDT72T1895 with an input bus width of x9 and output bus width of x18, 4 write cycles will be required. When Reading the IDT72T1895 with an output
bus width of x9 and input bus width of x18, 4 read cycles will be required. A total of 6 program/read cycles will be required if both the input and output bus widths are set to x9.
2. Consecutive reads of the offset registers is not permitted. The read operation must be disabled for a minimum of one RCLK cycle in between offset register accesses. (Please
refer to Figure 22, Parallel Read of Programmable Flag Registers (IDT Standard and FWFT Modes) for more details).
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