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參數(shù)資料
| 型號： | 952703BF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 217.9 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | GREEN, MO-118, SSOP-48 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大小： | 264K |
| 代理商： | 952703BF |
3
Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
0813B—05/17/05
Pin Description
PIN # PIN NAME
PIN
TYPE
DESCRIPTION
1
VDDREF
PWR
Ref, XTAL power supply, nominal 3.3V
2
**FS0/REF0
I/O
Frequency select latch input pin / 14.318 MHz reference clock.
3
**FS1/REF1
I/O
Frequency select latch input pin / 14.318 MHz reference clock.
4
**Mode/REF2
I/O
Function select latch input pin, 0=Desktop Mode, 1=Mobile Mode / Ref clock output.
5
GNDREF
PWR
Ground pin for the REF outputs.
6
X1
IN
Crystal input, Nominally 14.318MHz.
7
X2
OUT
Crystal output, Nominally 14.318MHz
8
GNDZ
PWR
Ground pin for the ZCLK outputs
9
ZCLK0
OUT
3.3V Hyperzip clock output.
10
ZCLK1
OUT
3.3V Hyperzip clock output.
11
VDDZ
PWR
Power supply for ZCLK clocks, nominal 3.3V
12
SCLK
IN
Clock pin of I2C circuitry 5V tolerant
13
VDDPCI
PWR
Power supply for PCI clocks, nominal 3.3V
14
*FS2/PCICLK_F0
I/O
Frequency select latch input pin / 3.3V PCI free running clock output.
15
*FS3/PCICLK_F1
I/O
Frequency select latch input pin / 3.3V PCI free running clock output.
16
PCICLK0
OUT
PCI clock output.
17
PCICLK1
OUT
PCI clock output.
18
GNDPCI
PWR
Ground pin for the PCI outputs
19
VDDPCI
PWR
Power supply for PCI clocks, nominal 3.3V
20
PCICLK2
OUT
PCI clock output.
21
*(PCI_STOP#)PCICLK3
I/O
Stops all PCICLKs besides the PCICLK_F clocks at logic 0 level, when input low. This
input is activated by the MODE selection pin / PCI clock output.
22
*(CPU_STOP#)PCICLK4
I/O
Stops all CPUCLKs besides the CPUCLK_F clocks at logic 0 level, when input low. This
input is activated by the MODE selection pin / PCI clock output.
23
*(PD#)PCICLK5
I/O
Asynchronous active low input pin used to power down the device into a low power state /
PCI clock output.
24
GNDPCI
PWR
Ground pin for the PCI outputs
25
GND48
PWR
Ground pin for the 48MHz outputs
26
24_48MHz/SEL24_48#MHz**~
I/O
24/48MHz clock output / Latched select input for 24/48MHz output. 0=48MHz, 1 = 24MHz.
27
12_48MHz/SEL12_48#MHz*
I/O
12/48MHz clock output / Latched select input for 12/48MHz output. 0=48MHz, 1 = 12MHz.
28
AVDD48
PWR
Power for 24/48MHz outputs and fixed PLL core, nominal 3.3V
29
VDDAGP
PWR
Power supply for AGP clocks, nominal 3.3V
30
AGPCLK1
OUT
AGP clock output
31
AGPCLK0
OUT
AGP clock output
32
GNDAGP
PWR
Ground pin for the AGP outputs
33
SDATA
I/O
Data pin for I2C circuitry 5V tolerant
34
IREF
OUT
This pin establishes the reference current for the SRCCLK pairs. This pin requires a fixed
precision resistor tied to ground in order to establish the appropriate current.
35
AGND
PWR
Analog Ground pin for Core PLL
36
AVDD
PWR
3.3V Analog Power pin for Core PLL
37
CPUCLKODC0
OUT
"Complememtary" clocks of differential pair CPU outputs. These open drain outputs need
an external 1.5V pull-up.
38
CPUCLKODT0
OUT
True clock of differential pair CPU outputs. These open drain outputs need an external
1.5V pull-up.
39
GNDCPU
PWR
Ground pin for the CPU outputs
40
CPUCLKODT1
OUT
True clock of differential pair CPU outputs. These open drain outputs need an external
1.5V pull-up.
41
GND
PWR
Ground pin.
42
SRCCLKC
OUT
Complement clock of differential pair for S-ATA support.
+/- 300ppm accuracy required.
43
SRCCLKT
OUT
True clock of differential pair for S-ATA support.
+/- 300ppm accuracy required.
44
VDDSRC
PWR
Supply for SRC clocks, 3.3V nominal
45
GNDAPIC
PWR
Ground pin for the IOAPIC outputs.
46
IOAPIC0
OUT
IOAPIC clock outputs, norminal 2.5V.
47
IOAPIC1
OUT
IOAPIC clock outputs, norminal 2.5V.
48
VDDLAPIC
PWR
Power pin for the IOAPIC outputs. 2.5V.
* Internal Pull-Up Resistor ** Internal Pull-Down Resistor ~ 1.5X Drive Strength
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