10

Integrated

Circuit

Systems, Inc.

ICS9LPRS365

Advance Information

1218—09/09/09

MLF Pin Description (Continued)

PIN #

PIN NAME

TYPE

DESCRIPTION

49

GNDSRC

PWR

Ground for SRC clocks

50

SRCC7/CR#_E

I/O

SRC7 complement or Clock Request control E for SRC6 pair

The power-up default is SRC7#, but this pin may also be used as a Clock Request control of

SRC6 via SMBus. Before configuring this pin as a Clock Request Pin, the SRC7 output pair

must first be disabled in byte 3, bit 3 of SMBus configuration space . After the SRC output is

disabled (high-Z), the pin can then be set to serve as a Clock Request for SRC6 pair using byte

6, bit 7 of SMBus configuration space

Byte 6, bit 7

0 = SRC7# enabled (default)

1= CR#_E controls SRC6.

51

SRCT7/CR#_F

I/O

SRC7 true or Clock Request control 8 for SRC8 pair

The power-up default is SRC7, but this pin may also be used as a Clock Request control of

SRC8 via SMBus. Before configuring this pin as a Clock Request Pin, the SRC7 output pair

must first be disabled in byte 3, bit 3 of SMBus configuration space After the SRC output is

disabled (high-Z), the pin can then be set to serve as a Clock Request for SRC8 pair using byte

6, bit 6 of SMBus configuration space

Byte 6, bit 6

0 = SRC7# enabled (default)

1 = CR#_F controls SRC8.

52

VDDSRC_IO

PWR

1.05V to 3.3V from external power supply

53

CPUC2_ITP/SRCC8

OUT

Complement clock of low power differential CPU2/Complement clock of differential SRC pair.

The function of this pin is determined by the latched input value on pin 7, PCIF5/ITP_EN on

powerup. The function is as follows:

Pin 7 latched input Value

0 = SRC8#

1 = ITP#

54

CPUT2_ITP/SRCT8

OUT

True clock of low power differential CPU2/True clock of differential SRC pair. The function of this

pin is determined by the latched input value on pin 7, PCIF5/ITP_EN on powerup. The function is

as follows:

Pin 7 latched input Value

0 = SRC8

1 = ITP

55

NC

N/A

No Connect

56

VDDCPU_IO

PWR

1.05V to 3.3V from external power supply

57

CPUC1_F

OUT

Complement clock of low power differenatial CPU clock pair. This clock will be free-running

during iAMT.

58

CPUT1_F

OUT

True clock of low power differential CPU clock pair. This clock will be free-running during iAMT.

59

GNDCPU

PWR

Ground Pin for CPU Outputs

60

CPUC0

OUT

Complement clock of low power differential CPU clock pair.

61

CPUT0

OUT

True clock of low power differential CPU clock pair.

62

VDDCPU

PWR

Power Supply 3.3V nominal.

63

CK_PWRGD/PD#

IN

Notifies CK505 to sample latched inputs, or iAMT entry/exit, or PWRDWN# mode

64

FSLB/TEST_MODE

IN

3.3V tolerant input for CPU frequency selection. Refer to input electrical characteristics for

Vil_FS and Vih_FS values. TEST_MODE is a real time input to select between Hi-Z and REF/N

divider mode while in test mode. Refer to Test Clarification Table.