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Integrated Device Technology Electronic Components Datasheet

ICS9LPRS462 Datasheet

Low Power Clock

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ICS9LPRS462 pdf
DATASHEET
Low Power Clock for ATI RS/RD600 series chipsets for
AMD CPUs
ICS9LPRS462
Description
ATI RD/RS600 series systems using AMD CPUs
Output Features
• Integrated Series Resistors on differential outputs
• Greyhound Compatible CPU outputs
• 2 - 0.7V Low Power differential CPU pairs
• 8 - 0.7V Low Power differential SRC pairs
• 4 - 0.7V Low Power differential ATIG pairs
• 1 - 66 MHz HyperTransport clock
• 2 - 48MHz USB clocks
• 3 - 14.318MHz Reference clocks
Features/Benefits:
• 3 - Programmable Clock Request pins for SRC and ATIG
clocks
• ATIGCLKs are programmable for frequency
• Spread Spectrum for EMI reduction
• Outputs may be disabled via SMBus
• External crystal load capacitors for maximum frequency
accuracy
Key Specifications
• CPU outputs cycle-to-cycle jitter <150ps
• SRC outputs cycle-to-cycle jitter < 125ps
• ATIG outputs cycle-to-cycle jitter < 125ps
• +/- 100ppm frequency accuracy on all outputs if REF is
tuned to +/-100ppm
Pin Configuration
GNDREF 1
VDDREF 2
X1 3
X2 4
VDD48 5
48MHz_0 6
48MHz_1 7
GND48 8
SMBCLK 9
SMBDAT 10
RESET_IN# 11
SRC7T_LPR 12
SRC7C_LPR 13
VDDSRC 14
GNDSRC 15
SRC6T_LPR 16
SRC6C_LPR 17
SRC5T_LPR 18
SRC5C_LPR 19
SRC4T_LPR 20
SRC4C_LPR 21
GNDSRC 22
VDDSRC 23
SRC3T_LPR 24
SRC3C_LPR 25
SRC2T_LPR 26
SRC2C_LPR 27
VDDSRC 28
GNDSRC 29
ATIG3T_LPR 30
ATIG3C_LPR 31
*CLKREQB# 32
64 FS0/REF0
63 FS1/REF1
62 FS2/REF2
61 **PD
60 VDDHTT
59 HTTCLK0
58 GNDHTT
57 *CLKREQA#
56 CPUKG0T_LPR
55 CPUKG0C_LPR
54 VDDCPU
53 GNDCPU
52 CPUKG1T_LPR
51 CPUKG1C_LPR
50 VDDA
49 GNDA
48 NC
47 SRC0T_LPR
46 SRC0C_LPR
45 GNDSRC
44 VDDSRC
43 SRC1T_LPR
42 SRC1C_LPR
41 ATIG0T_LPR
40 ATIG0C_LPR
39 VDDATIG
38 GNDATIG
37 ATIG1T_LPR
36 ATIG1C_LPR
35 ATIG2T_LPR
34 ATIG2C_LPR
33 *CLKREQC#
64-TSSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
Funtionality
FS2 FS1 FS0
000
001
010
011
100
101
110
111
CPU
MHz
Hi-Z
X/2
230.00
240.00
100.00
133.33
166.67
200.00
HTT
MHz
Hi-Z
X/3
76.67
80.00
66.66
66.66
66.66
66.66
SRC
M Hz
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
ATIG
M Hz
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
USB
M Hz
48.00
48.00
48.00
48.00
48.00
48.00
48.00
48.00
Power Groups
Pin Number
VDD
GND
58
Description
USB_48 outputs
14,23,26,36 15,22,27,37
33 32
SRCCLK outputs
ATIGCLK differential outputs
42 41
Analog, PLL
46 45 CPUCLK8 differential outputs
52 50
HTTCLK output
21
REF outputs
IDTTM/ICSTM Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs
1
1378A—04/07/08
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Integrated Device Technology Electronic Components Datasheet

ICS9LPRS462 Datasheet

Low Power Clock

No Preview Available !

ICS9LPRS462 pdf
ICS9LPRS462
Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs
Pin Description
PIN #
1 GNDREF
2 VDDREF
3 X1
4 X2
5 VDD48
6 48MHz_0
7 48MHz_1
8 GND48
9 SMBCLK
10 SMBDAT
PIN NAME
11 RESET_IN#
12 SRC7T_LPR
13 SRC7C_LPR
14 VDDSRC
15 GNDSRC
16 SRC6T_LPR
17 SRC6C_LPR
18 SRC5T_LPR
19 SRC5C_LPR
20 SRC4T_LPR
21 SRC4C_LPR
22 GNDSRC
23 VDDSRC
24 SRC3T_LPR
25 SRC3C_LPR
26 SRC2T_LPR
27 SRC2C_LPR
28 VDDSRC
29 GNDSRC
30 ATIG3T_LPR
31 ATIG3C_LPR
32 *CLKREQB#
TYPE
GND
PWR
IN
OUT
PWR
OUT
OUT
GND
IN
I/O
IN
OUT
OUT
PWR
GND
OUT
OUT
OUT
OUT
OUT
OUT
GND
PWR
OUT
OUT
OUT
OUT
PWR
GND
OUT
OUT
IN
DESCRIPTION
Ground pin for the REF outputs.
Ref, XTAL power supply, nominal 3.3V
Crystal input, nominally 14.318MHz
Crystal output, nominally 14.318MHz
Power pin for the 48MHz outputs and core. 3.3V
48MHz clock output.
48MHz clock output.
Ground pin for the 48MHz outputs
Clock pin of SMBus circuitry, 5V tolerant.
Data pin for SMBus circuitry, 5V tolerant.
Real Time falling edge triggered input, When asserted, the part initiates a power up
reset with the SMBus being reset to it's power up values, and all PLL derived clocks
stopped for the duration of Power up Stabilization. REF outputs continue to run.
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
Supply for SRC, 3.3V nominal
Ground pin for the SRC outputs
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
Ground pin for the SRC outputs
Supply for SRC, 3.3V nominal
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
True clock of low power differential SRC clock pair with integrated 33 ohm series
resistor. (no 50ohm shunt resistor to GND needed)
Complement clock of low power differential SRC clock pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
Supply for SRC, 3.3V nominal
Ground pin for the SRC outputs
True clock of low-power differential push-pull PCI-Express pair with integrated 33 ohm
series resistor. (no 50ohm shunt resistor to GND needed)
Complementary clock of low-power differential push-pull PCI-Express pair with
integrated 33 ohm series resistor. (no 50ohm shunt resistor to GND needed)
Programmable Clock Request pin for SRC/ATIG/SB_SRC outputs. If output is selected
for control, then that output is controlled as follows:
0 = Enabled, 1 = Tri-state
IDTTM/ICSTM Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs
2
1378A—04/07/08


Part Number ICS9LPRS462
Description Low Power Clock
Maker Integrated Device Technology
Total Page 23 Pages
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