ICS9LPRS480 Datasheet, PDF (6/25 Pages) Integrated Device Technology – Programmable System Clock Chip for ATI RS780 - K8TM based Systems

Integrated
Circuit
Systems, Inc.
ICS9LPRS480
TSSOP Pin Description (Continued)
PIN #
PIN NAME
33 VDDATIG
34 _{ATIG1C_LPRS}
35
ATIG1T_LPRS
36 _{ATIG0C_LPRS}
37 _{ATIG0T_LPRS}
38
SB_SRC1C_LPRS
39 _{SB_SRC1T_LPRS}
40 GNDSB_SRC
41 VDDSB_SRC_IO
42 VDDSB_SRC
43 _{SB_SRC0C_LPRS}
44
SB_SRC0T_LPRS
45
CLKREQ4#*
46
CLKREQ3#*
47 VDDSATA
48
SRC6C/SATAC_LPRS
49 _{SRC6T/SATAT_LPRS}
50 GNDSATA
51
CLKREQ2#*
52
CLKREQ1#*
53 GNDCPU
54 VDDCPU_IO
55 VDDCPU
56 _{CPUKG0C_LPRS}
57 _{CPUKG0T_LPRS}
58 _PD#
59 GNDHTT
60
HTT0C_LPRS/66M
61
HTT0T_LPRS/66M
62 VDDHTT
63 VDDREF
64
REF2/SEL_27
PIN TYPE
PWR
OUT
OUT
OUT
OUT
OUT
OUT
GND
PWR
PWR
OUT
OUT
IN
IN
PWR
OUT
OUT
GND
IN
IN
GND
PWR
PWR
OUT
OUT
IN
PWR
OUT
OUT
PWR
PWR
I/O
DESCRIPTION
Power supply for ATIG core, nominal 3.3V
Complementary clock of low-power differential push-pull PCI-Express pair with integrated series
resistor. (no 50ohm shunt resistor to GND and no 33 ohm series resistor needed)
True clock of low-power differential push-pull PCI-Express pair with integrated series resistor. (no
50ohm shunt resistor to GND and no 33 ohm series resistor needed)
Complementary clock of low-power differential push-pull PCI-Express pair with integrated series
resistor. (no 50ohm shunt resistor to GND and no 33 ohm series resistor needed)
True clock of low-power differential push-pull PCI-Express pair with integrated series resistor. (no
50ohm shunt resistor to GND and no 33 ohm series resistor needed)
Complement clock of low power differential Chipset-to-Chipset SRC clock pair. (no 50ohm shunt resistor
to GND and no 33 ohm series resistor needed
True clock of low power differential Chipset-to-Chipset SRC clock pair. (no 50ohm shunt resistor to GND
and no 33 ohm series resistor needed
Ground pin for the SB_SRC outputs
Power supply for differential SB_SRC outputs, nominal 1.05V to 3.3V
Supply for SB SRC PLL core, 3.3V nominal
Complement clock of low power differential Chipset-to-Chipset SRC clock pair. (no 50ohm shunt resistor
to GND and no 33 ohm series resistor needed
True clock of low power differential Chipset-to-Chipset SRC clock pair. (no 50ohm shunt resistor to GND
and no 33 ohm series resistor needed
Clock Request pin for SRC4 outputs. If output is selected for control, then that output is controlled as
follows:
0 = enabled, 1 = Low-Low
Clock Request pin for SRC3 outputs. If output is selected for control, then that output is controlled as
follows:
0 = enabled, 1 = Low-Low
Power supply for SATA core logic, nominal 3.3V
Complement clock of low power differential SRC/SATA clock pair. (no 50ohm shunt resistor to GND and
no 33 ohm series resistor needed)
True clock of low power differential SRC clock pair. (no 50ohm shunt resistor to GND and no 33 ohm
series resistor needed)
Ground pin for the SRC outputs
Clock Request pin for SRC2 outputs. If output is selected for control, then that output is controlled as
follows:
0 = enabled, 1 = Low-Low
Clock Request pin for SRC1 outputs. If output is selected for control, then that output is controlled as
follows:
0 = enabled, 1 = Low-Low
Ground pin for the CPU outputs
Power supply for differential CPU outputs, nominal 1.05V to 3.3V
Supply for CPU core, 3.3V nominal
Complementary signal of low-power differential push-pull AMD K8 "Greyhound" clock with integrated
series resistor. (no 33 ohm series resistor needed)
True signal of low-power differential push-pull AMD K8 "Greyhound" clock with integrated series
resistor.(no 33 ohm series resistor needed)
Enter /Exit Power Down.
0 = Power Down, 1 = normal operation.
Ground pin for the HTT outputs
Complementary signal of low-power differential push-pull hypertransport clock with integrated series
resistor. (no 50ohm shunt resistor to GND and no 33 ohm series resistor needed) / 1.8V single ended
66MHz hyper transport clock
True signal of low-power differential push-pull hypertransport clock with integrated series resistor. (no
50ohm shunt resistor to GND and no 33 ohm series resistor needed) /1.8V single ended 66MHz hyper
transport clock
Supply for HTT clocks, nominal 3.3V.
Ref, XTAL power supply, nominal 3.3V
14.318 MHz reference clock, 3.3V/3.3V Latched input to select 27MHz SS and non SS on SRC7
0 = 100MHz differential spreading SRC clock, 1 = 27MHz non-spreading singled clock on pin 12 and
27MHz spread clock on pin 13.
1391D—02/02/09
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