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IDTCV149PV [IDT]

Processor Specific Clock Generator, 400MHz, PDSO56, SSOP-56;
IDTCV149PV
型号： IDTCV149PV
厂家： INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述：

Processor Specific Clock Generator, 400MHz, PDSO56, SSOP-56

时钟 光电二极管 外围集成电路 晶体
文件： 总17页 (文件大小：427K)
中文：  中文翻译
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IDTCV149  
PROGRAMMABLE FLEXPC™  
CLOCK FOR AMD K8  
PROCESSOR ATI RS480  
DESCRIPTION:  
FEATURES:  
IDTCV149is a 56pinclockdevice forAMDadvance K8processors. The  
CPUoutputbufferisdesignedtosupportupto400MHzprocessor. Thisdevice  
alsoimplementsBand-gapreferencedIREFtoreducetheimpactofVDDvariation  
ondifferentialoutputs,whichcanprovidemorerobustsystemperformance.  
EachCPU/SRCclockhasitsownSpreadSpectrumselection,whichallows  
forisolatedchangesinsteadofaffecting otherclockgroups.  
• One high precision N and SSC programmable PLL for CPU  
• One high precision N and SSC programmable PLL for SRC[2:1]  
• One high precision N and SSC programmable PLL for SRC0  
[7:3] (PCI Express)  
• One high precision PLL for 48MHz  
• Band-gap circuit for differential outputs  
• Support multiple spread spectrum modulation, down and  
center  
• Support SMBus block read/write, index read/write  
• Selectable output strength for REF, PCI, 48MHz, HTT66  
• Available in SSOP and TSSOP packages  
KEYSPECIFICATION:  
• CPU CLK cycle to cycle jitter < 85ps  
• SRC CLK cycle to cycle jitter < 100ps  
• Static PLL frequency divide error = 0 ppm  
FUNCTIONALBLOCKDIAGRAM  
SRC  
SSC  
N Programming  
SRC[7:3], 0  
PCI0  
SRC  
PCI/  
SRC PLL  
SSC  
N Programming  
14.318MHz  
Osc  
SRC/  
Host/  
SRC[2:1]  
CLKREQ0#  
CLKREQ1#  
CPU PLL  
SSC  
N Programming  
CPU[1:0]  
HTT66  
TURBO1#  
USB48  
Fixed PLL  
No SSC  
48MHz/  
24_48MHz  
REF[2:0]  
Reset#  
OUTPUTTABLE  
CPU  
CLKREQ  
SRC  
HTT66  
PCI  
TURBO  
USB48  
24_48  
REF  
RESET#  
2
2
8
1
1
1
1
1
3
1
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.  
COMMERCIAL TEMPERATURE RANGE  
MAY 2004  
1
© 2004 Integrated Device Technology, Inc.  
DSC - 6497/2  
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
PINCONFIGURATION  
CPU AND SRC SPREAD SPECTRUM  
MAGNITUDECONTROL  
SMC[2:0]  
000  
%
XIN  
XOUT  
1
56  
55  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
VDD_REF  
VSS_REF  
REF0  
OFF  
2
001  
-0.25  
- 0.5  
VDD_48  
3
010  
REF1  
USB_48  
4
011  
-0.75  
±0.125  
±0.25  
±0.375  
±0.5  
5
VSS_48  
REF2  
100  
(1)CLK_STOP  
SCL  
6
VDD_PC1  
PCI0  
101  
7
110  
8
SDA  
(1) SEL24/24_48#  
VSS_PCI  
VDD_HTT  
HTT66  
111  
9
CLKREQ0#  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
CLKREQ1#  
SRCT7  
VSS_HTT  
CPUT0  
CPUC0  
VDD_CPU  
SESIGNALSTRENGTHSELECTION  
SRCC7  
Str[1:0]  
Strength  
0.6x  
VDD_SRC  
(2)  
00  
01  
10  
11  
RESET#  
VSS_CPU  
0.8x  
SRCT6  
SRCC6  
SRCT5  
CPUT1  
CPUC1  
1 x  
1.2x  
VDDA  
VSSA  
IREF  
SRCC5  
VSS_SRC  
VDD_SRC  
SRCT4  
VSS_SRC  
VDD_SRC  
SRCT0  
PCI (BASED ON SRC = 100MHz)  
SRCC4  
SRCT3  
PCIS[1:0]  
PCI  
33.33  
36.36  
40  
SRCC0  
VDD_SRC  
VSS_SRC  
SRCT1  
00  
01  
10  
11  
SRCC3  
(2) TURBO1  
30.77  
SRCT2  
SRCC2  
SRCC1  
NOTES:  
1. Internal 130KΩ pull-down resistor.  
2. Tristate at power on to be compatible with ATI pin definition.  
SSOP/ TSSOP  
TOP VIEW  
2
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
PINDESCRIPTION  
Pin Name  
XIN  
Type  
IN  
Pin #  
Description  
XTALin  
1
XOUT  
PCI0  
OUT  
OUT  
OUT  
OUT  
I N  
2
XTALout  
50  
PCI clock  
HTT66  
USB48  
Turbo1  
47  
66.66 MHz  
48MHz  
4
26  
Turbofrequencyselect  
Differentialclock  
CPUC[1:0]  
CPUT[1:0]  
OUT  
40, 41, 44, 45  
SRCC[7:0]  
SRCT[7:0]  
OUT  
12, 13, 16, 17, 18, 19,  
22, 23, 24, 25, 27, 28,  
Differentialclock  
29, 30, 33, 34  
IREF  
REF[1:0]  
REF2  
OUT  
OUT  
OUT  
IN  
37  
53,54  
52  
10  
11  
8
Differentialclockreferencecurrent  
14.318MHz  
14.318MHz  
CLKREQ0#  
CLKREQ1#  
SDA  
SRC OE control, see bytes 3, 4  
SRC OE control, see bytes 3, 4  
SMBus data  
IN  
I/O  
IN  
SCL  
7
SMBus clock  
SEL24/24_48#  
CLK_STOP  
RESET#  
IN  
9
Latched select input for 24 or 48MHz output. 1 = 24MHz, 0 = 48MHz.  
Active HIGH, drives all clocks to LOW (except CPU clocks)  
Resetoutputsignal,OpenDrain  
IN  
6
OUT,  
OD  
15  
3
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
SMPROTOCOL  
INDEXBLOCK WRITEPROTOCOL  
INDEXBLOCKREADPROTOCOL  
Mastercanstopreadinganytimebyissuingthestopbitwithoutwaiting  
untilNthbyte(bytecountbit30-37).  
Bit  
1
# of bits  
From  
Master  
Master  
Slave  
Master  
Slave  
Master  
Slave  
Master  
Slave  
Master  
Slave  
Description  
1
8
1
8
1
8
1
8
1
8
1
Start  
D2h  
2-9  
Bit  
1
# of bits  
From  
Master  
Master  
Slave  
Master  
Slave  
Master  
Master  
Slave  
Slave  
Description  
10  
Ack (Acknowledge)  
Registeroffsetbyte(startingbyte)  
Ack (Acknowledge)  
Byte count, N (0 is not valid)  
Ack (Acknowledge)  
firstdatabyte(Offsetdatabyte)  
Ack (Acknowledge)  
2nddatabyte  
1
8
1
8
1
1
8
1
8
Start  
D2h  
11-18  
19  
2-9  
10  
Ack (Acknowledge)  
Registeroffsetbyte(startingbyte)  
Ack (Acknowledge)  
RepeatedStart  
20-27  
28  
11-18  
19  
29-36  
37  
20  
21-28  
29  
D3h  
38-45  
46  
Ack (Acknowledge)  
Ack (Acknowledge)  
:
30-37  
Byte count, N (block read back of N  
bytes), power on is 8  
38  
1
8
1
8
Master  
Slave  
Master  
Slave  
Ack (Acknowledge)  
firstdatabyte(Offsetdatabyte)  
Ack (Acknowledge)  
2nddatabyte  
Master  
Slave  
Nthdatabyte  
39-46  
47  
Acknowledge  
Master  
Stop  
48-55  
Ack (Acknowledge)  
:
Master  
Slave  
Ack (Acknowledge)  
Nthdatabyte  
Notacknowledge  
Stop  
Master  
INDEX BYTE READ  
INDEX BYTE WRITE  
Setting bit[11:18] = starting address. After reading back the first data byte,  
masterissuesStopbit.  
Settingbit[11:18]=startingaddress,bit[20:27]=01h.  
4
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
BYTE 0  
Bit  
Output(s)Affected  
Description/Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
SRCT7, SRCC7  
SRCT6, SRCC6  
SRCT5, SRCC5  
SRCT4, SRCC4  
SRCT3, SRCC3  
SRCT2, SRCC2  
SRCT1, SRCC1  
SRCT0, SRCT0  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
1
1
1
1
1
1
1
BYTE 1  
Bit  
Output(s)Affected  
Description/Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
USB48  
REF2  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Outputenable  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Tristate  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
1
1
1
1
1
1
1
REF1  
REF0  
24_48MHz  
CPUT1, CPUC1  
CPUT0, CPUC0  
HTT66  
BYTE 2  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
PCI0  
Reserved  
PCI0 SEL1  
PCI0 SEL0  
Reserved  
SRCs  
Outputenable  
Tristate  
Enable  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
0
0
0
0
0
see PCI select table  
SRCT PWRDWN drive mode  
CPUT1 PWRDWN drive mode  
CPUT0 PWRDWN drive mode  
Driven in power down  
Driven in power down  
Driven in power down  
Tristateinpowerdown  
Tristateinpowerdown  
Tristateinpowerdown  
CPUT1  
CPUT0  
BYTE 3  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
SRC7  
SRC6  
CLKREQ0#  
CLKREQ0#  
CLKREQ0#  
CLKREQ0#  
CLKREQ0#  
CLKREQ1#  
CLKREQ1#  
CLKREQ1#  
CLKREQ1#  
CLKREQ1#  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
SRC5  
Controlled by CLKREQB#  
or CLKREQA#  
SRC4  
SRC3  
Reserved  
Reserved  
SRC0  
Controlled by CLKREQB#  
or CLKREQA#  
CLKREQ0#  
CLKREQ1#  
5
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
BYTE 4  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
SRC7  
SRC6  
NotControlled  
NotControlled  
NotControlled  
NotControlled  
NotControlled  
Controlled  
Controlled  
Controlled  
Controlled  
Controlled  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
SRC5  
When CLKREQ is HIGH,  
OutputisHi-Z  
SRC4  
SRC3  
Reserved  
Reserved  
SRC0  
When CLKREQ is HIGH,  
OutputisHi-Z  
NotControlled  
Controlled  
BYTE 5  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
HTT66  
HTT66  
HTT66strengthselection  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
1
0
1
0
1
0
PCIStrC1  
PCIStrC0  
REFStr1  
REFStr0  
48MHStr1  
48MHzStr0  
PCIstrengthselection  
REFstrengthselection  
USB48MHzstrengthselection  
BYTE 6  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
Reserve  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
SRC0, SR[7:3], SMC2  
SRC0, SR[7:3], SMC1  
SRC0, SR[7:3], SMC0  
Reserved  
SRC0, SRC[7:3] SSC control  
(see SMC table)  
SRC[2:1], SMC2  
SRC[2:1], SMC1  
SRC[2:1], SMC0  
SRC[2:1] control (see SMC table)  
BYTE 7  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
Revision ID  
Revision ID  
Revision ID  
Revision ID  
Vendor ID  
Vendor ID  
Vendor ID  
Vendor ID  
R
R
R
R
R
R
R
R
0
0
0
0
0
1
0
1
6
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
BYTE 8 (INDEX BLOCK READ BYTE COUNT)  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
1
0
1
1
0
BYTE 9  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
Reserved  
Reserved  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
Reserved  
Reserved  
Reserved  
CPU SMC2  
CPU SMC1  
CPU SMC0  
CPU PLL SSC control  
(see SMC table)  
BYTE10  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
WD_1_Timer7  
WD_1_Timer6  
WD_1_Timer5  
WD_1_Timer4  
WD_1_Timer3  
WD_1_Timer2  
WD_1_Timer1  
WD_1_Timer0  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
1
0
1
1
WatchDog_1_Alarm timer  
Defaultis11*290ms  
BYTE11  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
CPU_N8  
Reserved  
Reserved  
Reserved  
WDRB  
RW  
RW  
RW  
RW  
R
0
0
0
0
0
Alarmreadback,  
Alarm  
reset by WD disable  
2
1
0
RESET#(1)  
Reserved  
ResetEnable  
Disable  
Disable  
ResetEnable  
RW  
RW  
RW  
0
0
0
WatchDogEnable  
WatchDogEnable  
Enable  
7
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
BYTE12  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
CPU_N7  
CPU_N6  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
1
0
1
1
0
CPU_N5  
CPU_N4  
CPU CLK = N*Resolution  
Resolution=1.3333  
CPU_N3  
CPU_N2  
CPU_N1  
CPU_N0, LSB  
BYTE13  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
SRC1_N7, MSB  
SRC1_N6  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
1
0
1
1
0
SRC1_N5  
SRC2, SRC1  
SRC1_N4  
SRC CLK = N*Resolution  
Resolution=0.66667  
SRC1_N3  
SRC1_N2  
SRC1_N1  
SRC1_N0, LSB  
BYTE14  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
SRC0_N7, MSB  
SRC0_N6  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
1
0
1
1
0
SRC0_N5  
SRC0_N4  
SRC[7:3], SRC0  
SRC CLK = N*Resolution  
Resolution=0.66667  
SRC0_N3  
SRC0_N2  
SRC0_N1  
SRC0_N0, LSB  
BYTE15  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
Disable  
Disable  
Enable  
Enable  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
CPU N programming enable  
SRC1, SRC2 N Programming enable  
Disable  
Enable  
SRC0, SRC[7:3] N Programming enable  
Disable  
Enable  
Turbo1enable  
Turbo  
Disable  
Enable  
TurboActiveSelection  
Active HIGH  
Active LOW  
Reserved  
T1CN8  
8
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
BYTE16  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
T1CN7  
T1CN6  
T1CN5  
T1CN4  
T1CN3  
T1CN2  
T1CN1  
T1CN0  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
1
0
1
1
0
Turbo1 CPU PLL N setting  
CLK = N*Resolution  
Resolution=1.3333  
BYTE17  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
TSRC1_N7, MSB  
TSRC1_N6  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
1
0
0
1
0
1
1
0
TSRC1_N5  
Turbo1  
TSRC1_N4  
SRC2, SRC1  
TSRC1_N3  
SRC CLK = N*Resolution  
Resolution=0.66667  
TSRC1_N2  
TSRC1_N1  
TSRC1_N0, LSB  
BYTE 18 (RESERVED FOR USER)  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
BYTE 19 (RESERVED FOR USER)  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
9
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
BYTE 20 (RESERVED FOR USER)  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
0
RW  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
0
BYTE21  
Bit  
Output(s)Affected  
Description / Function  
0
1
Type  
Power On  
7
6
5
4
3
2
1
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Reserved  
Test_scl  
RW  
RW  
RW  
RW  
RW  
RW  
RW  
0
0
0
0
0
0
0
On chiptestmodeenable  
CLKoutputsenable  
Normal  
Normal  
SCLK = 1, CLK outputs = 1  
SCLK = 0, CLK outputs = 0  
CLKoutputs=Tristate  
0
Test_hiz  
RW  
0
BYTE 62 = 70h  
BYTE 63 = 13h  
ABSOLUTEMAXIMUMRATINGS(1)  
Symbol  
VDDA  
VDD  
Description  
3.3V Core Supply Voltage  
3.3V I/O Supply Voltage  
3.3V Input HIGH  
Min  
Max  
4.6  
4.6  
4.6  
Unit  
V
V
VIH  
V
VID  
3.3V Input LOW  
–0.5  
–65  
V
TS  
Storage Temperature  
+150  
°C  
V
ESD Prot Input ESD Protection  
Human Body Model  
NOTE:  
2000  
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause  
permanent damage to the device. This is a stress rating only and functional operation  
of the device at these or any other conditions above those indicated in the operational  
sections of this specification is not implied. Exposure to absolute maximum rating  
conditions for extended periods may affect reliability.  
10  
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
ELECTRICAL CHARACTERISTICS - INPUT / SUPPLY / COMMON OUTPUT  
PARAMETERS  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%  
Symbol  
VIH  
Parameter  
Input HIGH Voltage  
Input LOW Voltage  
Test Conditions  
Min.  
Typ.  
—
Max.  
Unit  
V
3.3V ± 5%  
3.3V ± 5%  
VDD  
2
VSS - 0.3  
0.7  
VDD + 0.3  
VIL  
—
0.8  
V
VIH_FS  
VIL_FS  
IIH  
3.3V Input HIGH Voltage  
3.3V Input LOW Voltage  
Input HIGH Current  
Input LOW Current  
—
VDD + 0.3  
V
VSS - 0.3  
–5  
—
0.35  
5
V
VIN = VDD  
—
µA  
µA  
µA  
mA  
MHz  
nH  
IIL1  
VIN = 0V, inputs with no pull-up resistors  
VIN = 0V, inputs with pull-up resistors  
Full active, CL = full load  
–5  
—
—
—
400  
—
7
IIL2  
Input LOW Current  
–200  
—
—
IDD3.3OP  
FI  
Operating Supply Current  
Input Frequency(1)  
—
VDD = 3.3V  
—
14.31818  
—
LPIN  
Pin Inductance(2)  
—
CIN  
Logic inputs  
—
—
5
COUT  
CINX  
TSTAB  
Input Capacitance(2)  
Output pin capacitance  
X1 and X2 pins  
—
—
6
pF  
—
—
5
Clock Stabilization(2,3)  
From VDD power-up  
Triangular modulation  
—
—
1.8  
33  
ms  
Modulation Frequency(2)  
30  
—
KHz  
NOTES:  
1. Input frequency should be measured at the REF output pin and tuned to ideal 14.31818MHz to meet ppm frequency accuracy on PLL outputs.  
2. This parameter is guaranteed by design, but not 100% production tested.  
3. See TIMING DIAGRAMS for timing requirements.  
11  
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
ELECTRICALCHARACTERISTICS-SRC0.7CURRENTMODEDIFFERENTIALPAIR  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 2pF  
Symbol  
ZO  
Parameter  
Test Conditions  
Min.  
3000  
2.4  
Typ.  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max.  
—
Unit  
Ω
Current Source Output Impedance(1) VO = VX  
VOH3  
VOL3  
Output HIGH Voltage  
Output LOW Voltage  
Voltage HIGH(1)  
Voltage LOW(1)  
IOH = -1mA  
IOL = 1mA  
—
V
—
0.4  
V
VHIGH  
VLOW  
VOVS  
Statistical measurement on single-ended signal using  
oscilloscope math function  
660  
–300  
—
1150  
150  
1150  
—
mV  
Max Voltage(1)  
Measurement on single-ended signal using absolute value  
mV  
VUDS  
Min Voltage(1)  
–300  
250  
—
VCROSS(ABS) Crossing Voltage (abs)(1)  
550  
140  
300  
10.003  
—
mV  
mV  
ppm  
ns  
d - VCROSS  
Crossing Voltage (var)(1)  
Long Accuracy(1,2)  
Average Period(2)  
Absolute Min Period(1,2)  
Rise Time(1)  
Variation of crossing over all edges  
See TPERIOD Min. - Max. values  
100MHz nominal  
ppm  
–300  
9.997  
9.912  
175  
175  
—
TPERIOD  
TABSMIN  
100MHz nominal  
ns  
tR  
tF  
VOL = 0.175V, VOH = 0.525V  
VOL = 0.175V, VOH = 0.525V  
700  
700  
125  
125  
55  
ps  
Fall Time(1)  
ps  
d-tR  
Rise Time Variation(1)  
Fall Time Variation(1)  
Duty Cycle(1)  
ps  
d-tF  
—
ps  
dT3  
Measurement from differential waveform  
Measurement from differential waveform  
45  
%
tJCYC-CYC  
SKEW  
Jitter, Cycle to Cycle(1)  
Pin-to-Pin Skew(1)  
TSU_SRC(1,3)  
—
125  
ps  
VT = 50%  
—
—
—
—
—
—
250  
60  
ps  
ns  
ns  
SRC STOP response to CLKREQ#  
SRC START response to CLKREQ#  
TDRIVE_SRC(1,3)  
60  
NOTES:  
1. This parameter is guaranteed by design, but not 100% production tested.  
2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz.  
3. See TIMING DIAGRAMS for timing requirements.  
12  
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
ELECTRICALCHARACTERISTICS-CPUDIFFERENTIALPAIR(SSCENABLEAND  
DISABLE)  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 2pF  
Symbol  
tR  
Parameter(1)  
Rise Edge Rate  
Test Conditions  
Min.  
2
Typ.  
—
Max.  
10  
Unit  
V/ns  
V/ns  
V
tF  
Fall Edge Rate  
2
—
10  
VDIFF  
∆VDIFF  
Differential Voltage (single end)  
Change in VDIFF_DC Magnitude  
Common Mode Voltage  
Change in Common Mode Voltage  
Jitter, Cycle to Cycle  
0.4  
–150  
1.05  
–200  
—
1.25  
—
2.3  
+150  
1.45  
+200  
200  
mV  
V
VCM  
∆VCM  
1.25  
—
mV  
ps  
tCCJITTER  
—
tJA  
tFS  
Jitter Accumulated  
Frequency Stabilization from  
Power-Up  
–1000  
—
—
—
+1000  
3
ps  
ms  
RON  
Output Impedance  
15  
47  
35  
50  
—
55  
53  
Ω
%
Duty Cycle Duty Cycle  
ppm  
Long Accuracy(2)  
Average Period(2)  
See TPERIOD Min. - Max. values  
–300  
+300  
ppm  
TPERIOD  
200MHz nominal  
250MHz nominal  
4.9985  
3.9988  
—
—
5.0015  
4.0012  
ns  
NOTES:  
1. Parameters guaranteed by design, but not 100% production tested.  
2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz.  
13  
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
ELECTRICAL CHARACTERISTICS - PCICLK / PCICLK_F, HTT66  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 30pF  
Symbol  
Parameter  
Test Conditions  
See Tperiod Min. - Max. values  
33.33MHzoutputnominal  
33.33MHzoutputspread  
IOH = -1mA  
Min.  
—
Typ.  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max.  
300  
30.009  
30.1598  
—
Unit  
ppm  
ns  
ppm  
LongAccuracy(1,2)  
ClockPeriod(2)  
TPERIOD  
29.991  
29.991  
2.4  
—
VOH  
VOL  
IOH  
Output HIGH Voltage  
OutputLOWVoltage  
Output HIGH Current  
V
V
IOL = 1mA  
0.55  
—
VOH at Min. = 1V  
VOH at Max. = 3.135V  
VOL at Min. = 1.95V  
VOL at Max. = 0.4V  
Risingedgerate  
-33  
—
mA  
-33  
IOL  
OutputLOWCurrent  
30  
—
mA  
—
38  
EdgeRate(1)  
1
4
V/ns  
V/ns  
ns  
EdgeRate(1)  
Fallingedgerate  
1
4
tR1  
tF1  
Rise Time(1)  
VOL = 0.8V, VOH = 2V  
VOL = 0.8V, VOH = 2V  
VT = 1.5V  
0.3  
0.3  
45  
1.2  
Fall Time(1)  
Duty Cycle(1)  
Jitter, Cycle to Cycle(1)  
1.2  
ns  
dT1  
55  
%
tJCYC-CYC  
VT = 1.5V  
—
500  
ps  
NOTES:  
1. This parameter is guaranteed by design, but not 100% production tested.  
2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz.  
ELECTRICALCHARACTERISTICS-24_48MHZ,48MHZ,USB  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 20pF  
Symbol  
Parameter  
Test Conditions  
See Tperiod Min. - Max. values  
48MHzoutputnominal  
IOH = -1mA  
Min.  
—
Typ.  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max.  
300  
20.834  
—
Unit  
ppm  
ns  
ppm  
LongAccuracy(1,2)  
ClockPeriod(2)  
TPERIOD  
VOH  
20.8257  
2.4  
—
Output HIGH Voltage  
OutputLOWVoltage  
Output HIGH Current  
V
VOL  
IOL = 1mA  
0.55  
—
V
IOH  
VOH at Min. = 1V  
VOH at Max. = 3.135V  
VOL at Min. = 1.95V  
VOL at Max. = 0.4V  
Risingedgerate  
-29  
—
mA  
-23  
—
IOL  
OutputLOWCurrent  
29  
mA  
—
27  
EdgeRate(1)  
1
2
V/ns  
V/ns  
ns  
EdgeRate(1)  
Fallingedgerate  
1
2
tR1  
tF1  
Rise Time(1)  
VOL = 0.8V, VOH = 2V  
VOL = 0.8V, VOH = 2V  
VT = 1.5V  
0.5  
0.5  
45  
1.2  
1.2  
55  
Fall Time(1)  
Duty Cycle(1)  
Jitter, Cycle to Cycle(1)  
ns  
dT1  
%
tJCYC-CYC  
VT = 1.5V  
—
350  
ps  
NOTES:  
1. This parameter is guaranteed by design, but not 100% production tested.  
2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz.  
14  
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
ELECTRICALCHARACTERISTICS-REF-14.318MHZ  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 20pF  
Symbol  
Parameter  
Test Conditions  
See Tperiod Min. - Max. values  
14.318MHzoutputnominal  
IOH = -1mA  
Min.  
—
Typ.  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max.  
0
Unit  
ppm  
ns  
ppm  
LongAccuracy(1)  
TPERIOD  
VOH  
Clock Period  
69.827  
2.4  
—
69.855  
—
OutputHIGHVoltage(1)  
OutputLOWVoltage(1)  
Output HIGH Current  
V
VOL  
IOL = 1mA  
0.4  
—
V
IOH  
VOH at Min. = 1V  
VOH at Max. = 3.135V  
VOL at Min. = 1.95V  
VOL at Max. = 0.4V  
Risingedgerate  
-33  
—
mA  
-33  
—
IOL  
OutputLOWCurrent  
30  
mA  
—
38  
EdgeRate(1)  
1
4
V/ns  
V/ns  
ns  
EdgeRate(1)  
Fallingedgerate  
1
4
tR1  
tF1  
Rise Time(1)  
VOL = 0.8V, VOH = 2V  
VOL = 0.8V, VOH = 2V  
VT = 1.5V  
0.3  
0.3  
45  
1.2  
1.2  
55  
Fall Time(1)  
Duty Cycle(1)  
Jitter, Cycle to Cycle(1)  
ns  
dT1  
%
tJCYC-CYC  
VT = 1.5V  
—
1000  
ps  
NOTE:  
1. This parameter is guaranteed by design, but not 100% production tested.  
15  
IDTCV149  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
COMMERCIALTEMPERATURERANGE  
CLKREQ#ASSERTION  
TheclocksamplestheCLKREQ#signalonarisingedgeofSRCclock.AfterdetectingtheCLKREQ#assertionlow,allcontrolledSRCclockswillbetristate  
ontheirnexthightolowtransition.  
tSU_SRC  
CLKREQ#  
SRC  
SRC#  
CLKREQ#-DE-ASSERTION  
Thede-assertionoftheCLKREQ#signalistobesampledontherisingedgeoftheSRCfreerunningclockdomain.AfterdetectingCLKREQ#de-assertion,  
allcontrolledSRCclockswillresumeinaglitchfreemanner.  
tDRIVE_SRC  
CLKREQ#  
SRC  
SRC#  
16  
IDTCV149  
COMMERCIALTEMPERATURERANGE  
PROGRAMMABLEFLEXPC™CLOCKFORAMDK8PROCESSORATIRS480  
ORDERINGINFORMATION  
IDTCV XXX  
Device Type  
XX  
Package  
X
Grade  
Blank Commercial Temperature Range  
(0°C to +70°C)  
Small Shrink Outline Package  
Thin Shrink Small Outline Package  
TSSOP - Green  
PV  
PA  
PAG  
Programmable FlexPC™ Clock for AMD K8  
Processor ATI RS480  
149  
CORPORATE HEADQUARTERS  
6024 Silver Creek Valley Road  
San Jose, CA 95138  
for SALES:  
800-345-7015 or 408-284-8200  
fax: 408-284-2775  
www.idt.com  
for Tech Support:  
logichelp@idt.com  
17  

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