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參數(shù)資料
| 型號： | CY28353-2 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 時鐘和緩沖器 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大小： | 240K |
| 代理商： | CY28353-2 |
CY28312B-2
Document #: 38-07596 Rev. **
Page 5 of 17
CY28312B-2 Serial Configuration Map
The serial bits will be read by the clock driver in the following
order:
Byte 0–Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1–Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte N–Bits 7, 6, 5, 4, 3, 2, 1, 0
All unused register bits (reserved and N/A) should be written
to a “0” level.
All register bits labeled “Initialize to 0” must be written to zero
during initialization.
29
Acknowledge from slave
Data byte from slave – 8 bits
Not Acknowledge
Stop
30:37
38
39
Table 3. Byte Read and Byte Write Protocol
(continued)
Byte Write Protocol
Byte Read Protocol
Bit
Description
Bit
Description
Byte 0: Control Register 0
Bit
Pin#
–
Name
Default
0
Description
Bit 7
Spread Enable
0 = Disabled
1 = Enabled
‘000’ = ±0.25%
‘001’ = –0.5%
‘010’ = ±0.5%
‘011’ = ±0.38%
‘100’ = Reserved
‘101’ = Reserved
‘110’ = Reserved
‘111’ = Reserved
SW Frequency selection bits. See
Table 4
.
Bit 6
Bit 5
Bit 4
–
–
–
Spread Select2
Spread Select1
Spread Select0
0
0
0
Bit 3
Bit 2
Bit 1
Bit 0
–
–
–
–
SEL3
SEL2
SEL1
SEL0
0
0
0
0
Byte 1: Control Register 1
Bit
Pin#
42, 41
39, 38
Name
Default
1
1
Description
Bit 7
Bit 6
CPUT0, CPUC0
CPUT_CS,
CPUC_CS
48MHz
24_48MHz
Reserved
AGP2
AGP1
AGP0
(Active/Inactive)
(Active/Inactive)
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
6
7
–
28
27
26
1
1
0
1
1
1
(Active/Inactive)
(Active/Inactive)
Reserved
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
Byte 2: Control Register 2
Bit
Pin#
20
18
17
16
14
Name
Default
1
1
1
1
1
Description
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
PCI7
PCI6
PCI5
PCI4
PCI3
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28353OXC-2 | 功能描述:時鐘緩沖器 Differential clock Buffer/Driver RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| CY28353OXC-2T | 功能描述:時鐘緩沖器 Differential clock Buffer/Driver RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| CY28354-400 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:210-MHz 24-Output Buffer for 4-DDR DIMMS for VIA Chipsets Support |
| CY28354OXC-400 | 功能描述:時鐘緩沖器 273MHz Output Buffer for 4 DDR DIMMs RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| CY28354OXC-400T | 功能描述:時鐘緩沖器 273MHz Output Buffer for 4 DDR DIMMs RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
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