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參數(shù)資料
| 型號： | CY28378OXCT |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK CK408/TITAN 845 48SSOP |
| 標(biāo)準包裝： | 1,000 |
| 類型： | 時鐘/頻率發(fā)生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU 服務(wù)器 |
| 輸入： | 晶體 |
| 輸出： | HCSL，LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:21 |
| 差分 - 輸入:輸出： | 無/是 |
| 頻率 - 最大： | 203MHz |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-BSSOP（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 48-SSOP |
| 包裝： | 帶卷 (TR) |
CY28378
........................ Document #: 38-07519 Rev. ** Page 4 of 21
Serial Data Interface
To enhance the flexibility and function of the clock synthesizer,
a two-signal serial interface is provided. Through the Serial
Data Interface (SDI), various device functions such as
individual clock output buffers, etc. can be individually enabled
or disabled.
Table 2. Frequency Selection Table
Input Conditions
Output Frequency
VCO
Freq.
PLL Gear
Constants
(G)
FS4
FS3
FS2
FS1
FS0
CPU
3V66
PCI
SEL4
SEL3
SEL2
SEL1
SEL0
0
100.7
67.1
33.6
402.80
47.99750
0
1
100.9
67.3
33.6
403.60
47.99750
0
1
0
108.0
72.0
36.0
432.00
47.99750
0
1
101.2
67.5
33.7
404.80
47.99750
0
1
0
114.0
76.0
38.0
456.00
47.99750
0
1
0
1
117.0
78.0
39.0
468.00
47.99750
0
1
0
120.0
80.0
40.0
480.00
47.99750
0
1
123.0
82.0
41.0
492.00
47.99750
0
1
0
125.7
62.9
31.4
377.12
63.99667
0
1
0
1
130.3
65.1
32.6
390.80
63.99667
0
1
0
1
0
133.9
67.0
33.5
401.70
63.99667
0
1
0
1
134.2
67.1
33.6
402.60
63.99667
0
1
0
134.5
67.3
33.6
403.50
63.99667
0
1
0
1
148.0
74.0
37.0
444.00
63.99667
0
1
0
152.0
76.0
38.0
456.00
63.99667
0
1
156.0
78.0
39.0
468.00
63.99667
1
0
160.0
80.0
40.0
480.00
63.99667
1
0
1
164.0
82.0
41.0
492.00
63.99667
1
0
1
0
167.4
66.9
33.5
334.80
95.99500
1
0
1
170.0
68.0
34.0
340.00
95.99500
1
0
1
0
175.0
70.0
35.0
350.00
95.99500
1
0
1
0
1
180.0
72.0
36.0
360.00
95.99500
1
0
1
0
185.0
74.0
37.0
370.00
95.99500
1
0
1
190.0
76.0
38.0
380.00
95.99500
1
0
166.8
66.7
33.4
333.60
95.99500
1
0
1
100.2
66.8
33.4
400.80
47.99750
1
0
1
0
133.6
66.8
33.4
400.80
63.99667
1
0
1
200.4
66.8
33.4
400.80
95.99500
1
0
166.6
66.6
33.3
333.33
95.99500
1
0
1
100.0
66.6
33.3
400.00
47.99750
1
0
200.0
66.6
33.3
400.00
95.99500
1
133.3
66.6
33.3
400.00
63.99667
Swing Select Functions
MULTSEL1
MULTSEL0
Board Target
Trace/Term Z
Reference R, IREF =
VDD/(3*Rr)
Output
Current
VOH @ Z
00
50
Rr = 221 1%,
IREF = 5.00 mA
IOH = 4*Iref
1.0V @ 50
10
50
Rr = 475 1%,
IREF = 2.32 mA
IOH = 6*Iref
0.7V @ 50
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