參數(shù)資料
型號(hào): SL28555AQC
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: PROC SPECIFIC CLOCK GENERATOR, QCC56
封裝: 8 X 8 MM, LEAD FREE, QFN-56
文件頁(yè)數(shù): 1/25頁(yè)
文件大?。?/td> 189K
代理商: SL28555AQC
Low Power Clock Generator for Intel Mobile Platform
SL28555
Rev 1.4, December 16, 2007
Page 1 of 25
2200 Laurelwood Road, Santa Clara, CA 95054
Tel:(408) 855-0555
Fax:(408) 855-0550
www.SpectraLinear.com
Features
Compliant to Intel CK505
Low power push-pull type differential output buffers
Integrated voltage regulator
Integrated series terminationresistors on differential
clocks
Scalable low voltage VDD_IO (3.3V to 1.05V)
8-step drive strength control for all single-ended clocks
Differential CPU clocks with selectable frequency
100 MHz Differential SRC clocks
96 MHz Differential DOT clock
48 MHz USB clocks
33 MHz PCI clocks
Buffered Reference Clock 14.318 MHz
Low-voltage frequency select input
I2C support with readback capabilities
Ideal Lexmark Spread Spectrum profile for maximum
electromagnetic interference (EMI) reduction
56-pin QFN package
CPU
SRC
PCI
REF
DOT96 USB_48
LCD
x2 / x3
x7
x6
x 1
x1
Pin Configuration
Block Diagram
VDD_REF
VDD_CPU_I/O
VDD_SRC_I/O
CKPWRGD/PD#
PLL Reference
FS[C:A]
CPU PLL1
SS
PLL3
SS
CLKREQ#
VDD_SRC_I/O
REF
CPUT[1:0]
CPUC[1:0]
CPUT2_ITP/SRC8T
CPUC2_ITP/SRC8C
SRCT [2,3,4,11,7]
SRCC [2,3,4,11,7]
LCD_100T/SRC1T
I2C
Logic
SDATA
SCLK
14.318MHz
Crystal
Xin
Xout
ITP_EN
VDD_48
USB_48
VDD_PCI
PCI[4:0], PCIF0
PCI_STP#
CPU_STP#
CPU
SRC
PCI
PLL2
Fixed
LCD_100
DOT96
DOT96T
DOT96C
VDD_SRC_I/O
LCD_100C/SRC1C
VDD_I/O
GCLK_SEL
V
ss_R
E
F
S
B
/TEST_
M
O
D
E
C
K
P
W
RGD
/
P
D
#
Vd
d_
C
P
U
CPU
0
CPU
#
0
V
ss_C
P
U
CPU
1
CPU
#
1
V
d
_
CP
U_
IO
NC
SRC
8
/
IT
P
SRC
#8
/
ITP#
Vd
d_
S
R
C
_
IO
56 55 54 53 52 51 50 49 48 47 46 45 44 43
Xtal_Out
1
42
SRC7 / CR#_F
Xtal_In
2
41
SRC#7 / CR#_E
Vdd_REF
340
Vss_SRC
REF0 / FSC / TestSel
4
39
Vdd_SRC
SDATA
538
PCI_STOP#
SCLK
6
37
CPU_STOP#
PCI0 / CR#A
7
SL28555
36
SRC11
Vdd_PCI
8
35
SRC#11
PCI1 / CR#B
9
34
SRC#4
PCI2 / TME
10
33
SRC4
PCI3
11
32
Vdd_SRC_IO
PCI4/GCLK_SEL**
12
31
SRC#3 / CR#_D
PCIF0 / ITP_EN
13
30
SRC3 / CR#_C
Vss_PCI
14
29
Vss_SRC
15 16 17 18 19 20 21 22 23 24 25 26 27 28
V
d
_48
US
B
/
F
S
A
V
s
_48
Vd
d
_
IO
DO
T
9
6
D
O
T
#96
V
s
s_IO
Vdd
_
PLL
3
S
R
C1
/L
CD
_1
0
S
R
C#
1
/
L
C
D_1
00#
V
ss_
P
L
L3
V
d
d_
PLL3
_
IO
SR
C2
S
R
C
#2
* internal Pull-up
** internal Pull-down
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