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參數(shù)資料
| 型號： | OR3T125-4BA352I |
| 元件分類： | FPGA |
| 英文描述： | FPGA, 784 CLBS, 92000 GATES, PBGA352 |
| 封裝： | PLASTIC, BGA-352 |
| 文件頁數(shù)： | 185/210頁 |
| 文件大?。?/td> | 2138K |
| 代理商： | OR3T125-4BA352I |
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Preliminary Data Sheet, Rev. 1
ORCA Series 3 FPGAs
September 1998
76
Lucent Technologies Inc.
Programmable Clock Manager (PCM): Advance Information (continued)
PCM Detailed Programming
Descriptions of bit fields and individual control bits in the PCM control registers are provided in Table 30. Refer to
Figure 46 for more information on the location of the PCM elements that are discussed. In the following discussion,
the duty cycle is in the percentage of the clock period where the clock is high.
Table 30. PCM Control Registers
Bit #
Function
Register 0—Divider 0 Programming
Bits [3:0]
4-Bit Divider, DIV0, Value. This value enables the input clock to immediately be divided by a
value from 1 to 8. A 0 value (the default) indicates that DIV0 is bypassed (no division). Bypass
incurs less delay than dividing by 1. Hexadecimal values greater than 8 for bits [3:0] yield their
modulo 8 value. For example, if bits [3:0] are 1001 (9 hex), the result is divide by 1 (remainder
9/8 = 1).
Bits [6:4]
Reserved.
Bit 7
DIV 0 Reset Bit. DIV0 may not be reset by GSRN depending on the value of register 7, bit 7.
This bit may be set to 1 to reset DIV0 to its default value. Bit 0 must be set to 0 (the default) to
remove the reset.
Register 1—Divider 1 Programming
Bits [3:0]
4-Bit Divider, DIV1, Value. This value enables the feedback clock to be divided by a value from
1 to 8. A 0 value (the default) indicates that DIV1 is bypassed (no division). Bypass incurs less
delay than dividing by 1. Hexadecimal values greater than 8 for bits [3:0] yield their modulo 8
value. For example, if bits [3:0] are 1001 (9 hex), the result is divide by 1 (remainder 9/8 = 1).
Bits [6:4]
Reserved.
Bit 7
DIV1 Reset Bit. DIV1 may not be reset by GSRN, depending on the value of register 7, bit 7.
This bit may be set to 1 to reset DIV1 to its default value. Bit 0 must be set to 0 (the default) to
remove the reset.
Register 2—Divider 2 Programming
Bits [3:0]
4-Bit Divider, DIV2, Value. This value enables the tapped delay line output clock driven onto
ExpressCLK
to be divided by a value from 1 to 8. A 0 value (the default) indicates that DIV2 is
bypassed (no division). Bypass incurs less delay than dividing by 1. Hexadecimal values greater
than 8 for bits [3:0] yield their modulo 8 value. For example, if bits [3:0] are 1001 (9 hex), the
result is divide by 1 (remainder 9/8 = 1).
Bits [6:4]
Reserved.
Bit 7
DIV2 Reset Bit. DIV2 may not be reset by GSRN, depending on the value of register 7, bit 7.
This bit may be set to 1 to reset DIV2 to its default value. Bit 7 must be set to 0 (the default) to
remove the reset.
Register 3—DLL 2x Duty-Cycle Programming
Bits [2:0]
Duty-cycle selection for the doubled clock period associated with the input clock high. The duty
cycle is (value of bit 6) * 50% + ((value of bits [2:0]) + 1) * 6.25%. See the description for bit 6.
Bits [5:3]
Duty-cycle selection for the doubled clock period associated with the input clock low. The duty
cycle is (value of bit 7) * 50% + ((value of bits [2:0]) + 1) * 6.25%. See the description for bit 7.
Bit 6
Master duty-cycle control for the first clock period of the doubled clock: 0 = less than or equal to
50%, 1 = greater than 50%.
Bit 7
Master duty-cycle control for the second clock period of the doubled clock: 0 = less than or equal
to 50%, 1 = greater than 50%. Example: Both clock periods having a 62.5% duty cycle, bits [7:0]
are 11 001 001.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OR3T125-4BA352 | FPGA, 784 CLBS, 92000 GATES, PBGA352 |
| OR3T125-5B432 | FPGA, 784 CLBS, 92000 GATES, PBGA432 |
| OR3T125-5B600 | FPGA, 784 CLBS, 92000 GATES, PBGA600 |
| OR3T125-6B432 | FPGA, 784 CLBS, 92000 GATES, PBGA432 |
| OR3T125-6B600 | FPGA, 784 CLBS, 92000 GATES, PBGA600 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OR3T125-4BC432I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field Programmable Gate Array (FPGA) |
| OR3T125-4BC600I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field Programmable Gate Array (FPGA) |
| OR3T125-4PS208I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field Programmable Gate Array (FPGA) |
| OR3T125-4PS240I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field Programmable Gate Array (FPGA) |
| OR3T125-5BA352 | 制造商:AGERE 制造商全稱:AGERE 功能描述:3C and 3T Field-Programmable Gate Arrays |
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