1613C—02/08/12

ICS9ERS3165

Embedded 64-Pin Industrial Temperature Range CK505 Compatible Clock

3

TSSOP Pin Description (continued)

PIN #

PIN NAME

TYPE

DESCRIPTION

17

27FIX/LCDT/SRCT_LR1/SE1

OUT

Single-ended 3.3V 27MHz fix clock output / True clock of differential SRC1 or LCD

clock pair / Single ended 3.3V peripheral clock output. The default output selection

is determined by the SEL_27 default latch value. See below:

27_SEL=0: LCD100 with -0.5% down spread is selected as default. LCD100 spread

percentage can be adjusted OR output can be changed to SRC or 3.3V single-ended

peripheral clock output via SMBUs B1b[4:1].

27_SEL=1: Single-ended 27FIX output is selected.

18

27SS/LCDC/SRCC_LR1/SE2

OUT

Single-ended 3.3V 27MHz fix clock output / Complementary clock of differential

SRC1 or LCD clock pair / Single ended 3.3V peripheral clock output. The default

output selection is determined by the SEL_27 default latch value. See below:

27_SEL=0: LCD100 with -0.5% down spread is selected as default. LCD100 spread

percentage can be adjusted OR output can be changed to SRC or 3.3V single-ended

peripheral clock output via SMBUs B1b[4:1].

27_SEL=1: Single-ended 27SS output is selected with -0.5% down spread as

default. Spread percentage can be adjusted via SMBus B1b[4:1].

19

GND

PWR Ground pin for SRC / SE1 and SE2 clocks, PLL3.

20

VDDPLL3I/O

PWR

1.05V to 3.3V from external power supply

21

SRCT_LR2/SATACLKT

OUT True clock of differential SRC/SATA clock pair.

22

SRCC_LR2/SATACLKC

OUT Complement clock of differential SRC/SATA clock pair.

23

GNDSRC

PWR Ground pin for SRC clocks.

24

SRCT_LR3/CR#_C

I/O

True clock of differential SRC clock pair/ Clock Request control C for either SRC0 or

SRC2 pair

The power-up default is SRCCLK3 output, but this pin may also be used as a Clock

Request control of SRC pair 0 or SRC pair 2 via SMBus. Before configuring this pin

as a Clock Request Pin, the SRC3 output must first be disabled in byte 4, bit 7 of

SMBus address space . After the SRC3 output is disabled, the pin can then be set to

serve as a Clock Request pin for either SRC pair 2 or pair 0 using the CR#_C_EN bit

located in byte 5 of SMBUs address space.

Byte 5, bit 3

0 = SRC3 enabled (default)

1= CR#_C enabled.

Byte 5, bit 2 controls whether CR#_C controls SRC0 or SRC2 pair

Byte 5, bit 2

0 = CR#_C controls SRC0 pair (default),

1= CR#_C controls SRC2 pair

25

SRCC_LR3/CR#_D

I/O

Complementary clock of differential SRC clock pair/ Clock Request control D for

either SRC1 or SRC4 pair

The power-up default is SRCCLK3 output, but this pin may also be used as a Clock

Request control of SRC pair 1 or SRC pair 4 via SMBus. Before configuring this pin

as a Clock Request Pin, the SRC3 output must first be disabled in byte 4, bit 7 of

SMBus address space . After the SRC3 output is disabled, the pin can then be set to

serve as a Clock Request pin for either SRC pair 1 or pair 4 using the CR#_D_EN bit

located in byte 5 of SMBUs address space.

Byte 5, bit 1

0 = SRC3 enabled (default)

1= CR#_D enabled.

Byte 5, bit 0 controls whether CR#_D controls SRC1 or SRC4 pair

Byte 5, bit 0

0 = CR#_D controls SRC1 pair (default),

1= CR#_D controls SRC4 pair

26

VDDSRCI/O

PWR

1.05V to 3.3V from external power supply

27

SRCT_LR4

I/O

True clock of differential SRC clock pair 4

28

SRCC_LR4

I/O

Complement clock of differential SRC clock pair 4

29

GNDSRC

PWR Ground pin for SRC clocks.

30

SRCT_LR9

OUT True clock of differential SRC clock pair.

31

SRCC_LR9

OUT Complement clock of differential SRC clock pair.

32

SRCC_LR11/CR#_G

I/O

SRC11 complement /Clock Request control for SRC9 pair

The power-up default is SRC11#, but this pin may also be used as a Clock Request

control of SRC9 via SMBus. Before configuring this pin as a Clock Request Pin, the

SRC11 output pair must first be disabled in byte 3, bit 7 of SMBus configuration

space After the SRC11 output is disabled (high-Z), the pin can then be set to serve

as a Clock Request for SRC9 pair using byte 6, bit 5 of SMBus configuration space

Byte 6, bit 5

0 = SRC11# enabled (default)

1= CR#_G controls SRC9