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參數資料
| 型號： | W83178S |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 100 MHZ 3-DIMM SDRAM BUFFER |
| 中文描述： | W83 SERIES, LOW SKEW CLOCK DRIVER, 13 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
| 封裝： | SOP-28 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 129K |
| 代理商： | W83178S |
Preliminary W83178S
100 MHZ 3-DIMM SDRAM BUFFER
Publication Release Date: March 1999
Revision A1
- 1 -
1. GENERAL DESCRIPTION
The W83178S is a 13 outputs SDRAM clock buffer for 3-DIMMs models incorporate with W83196S-
14 which is the clock synthesizer especially for the 100 MHz models such as Intel BX chipsets. (Refer
the datasheet fo Winbond W83196S-14)
The W83178S receives the clock from chipset by the Buffer_In pin and provides almost zero-delay
(less than 4 nS propagation delay) SDRAM buffer outputs for the 13 SDRAM clocks which are
synchronous with the CPU clock outputs priovided by W83196S-14. The clock skew between any two
clock outputs is less than 250 pS and the output buffer impedance is about 15 ohms.
The W83178S also provides I
2
C serial bus interface to program the registers to enable or disable
each SDRAM clock outputs.
2. FEATURES
Supports Intel Pentium II CPUs for BX chipset
13 SDRAM clocks for 3-DIMMs
Clock skew less than 250 pS
Almost none delay Buffer-in controlling SDRAM clocks(<4 nS propagation delay)
I
2
C 2-wire serial interface
Programmable registers to enable/stop each output
Incorporate with W83196S-14
Packaged in 28-pin SOP
3. PIN CONFIGURATION
28
27
26
25
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Vss
VDD
SDRAM 9
SDRAM 8
Vss
VDD
SDRAM11
SDRAM10
Vss
Vss
*SCLOCK
SDRAM 6
SDRAM 7
VDD
VDD
Vss
VDD
Vss
SDRAM 2
SDRAM 3
SDRAM 4
SDRAM 5
SDRAM12
SDRAM 0
SDRAM 1
VDD
*SDATA
BUFFER_IN
相關PDF資料 |
PDF描述 |
|---|---|
| W83193R-01 | 83.MHZ 3-DIMM CLOCK |
| W83193R-02 | 83.3 MHZ 3-DIMM CLOCK |
| W83193R-04 | 83.3 MHZ 3-DIMM CLOCK |
| W83193R-04A | 83.3 MHZ 3-DIMM CLOCK |
| W83194AR-73 | 150MHZ CLOCK FOR WHITNEY CHIPSET |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W83193R-01 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:83.MHZ 3-DIMM CLOCK |
| W83193R-02 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:83.3 MHZ 3-DIMM CLOCK |
| W83193R-04 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:83.3 MHZ 3-DIMM CLOCK |
| W83193R-04A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:83.3 MHZ 3-DIMM CLOCK |
| W83194AR-73 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:150MHZ CLOCK FOR WHITNEY CHIPSET |
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