8

ICS9LPRS355

Datasheet

1205—06/24/14

MLF Pin Description (Continued)

PIN #

PIN NAME

TYPE

DESCRIPTION

17

USB_48MHz/FSLA

I/O

Fixed 48MHz USB clock output. 3.3V./ 3.3V tolerant input for CPU frequency selection. Refer to

input electrical characteristics for Vil_FS and Vih_FS values.

18

GND48

PWR

Ground pin for the 48MHz outputs.

19

VDD96_IO

PWR

1.05V to 3.3V from external power supply

20

SRCT0/DOTT_96

OUT

True clock of SRC or DOT96. The power-up default function depends on 27_Select,1= SRC0

0=DOT96

21

SRCC0/DOTC_96

OUT

Complement clock of SRC or DOT96. The power-up default function depends on 27_Select,1=

SRC0

0=DOT96

22

GND

PWR

Ground pin for the DOT96 clocks.

23

VDDPLL3

PWR

Power supply for SRC / SE1 and SE2 clocks, 3.3V nominal.

24

27MHz_NonSS/SRCT1/SE1/LCD-SST

OUT

True clock of differential SRC1 clock pair / 3.3V single-ended output. 27_Select determines the

power-up default, 1=27MHz non-spread SE clock, 0 = LCD_SST 100MHz differential clock. See

table 2 for more information.

25

27MHz_SS/SRCC1/SE2/LCD-SSC

OUT

Complement clock of differential SRC1 clock pair / 3.3V single-ended output. 27_Select

determines the power-up default, 1=27MHz spread SE clock, 0 = LCD_SSC 100MHz differential

clock. See table 2 for more information.

26

GND

PWR

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

27

VDDPLL3_IO

PWR

1.05V to 3.3V from external power supply

28

SRCT2/SATAT

OUT

True clock of differential SRC/SATA clock pair.

29

SRCC2/SATAC

OUT

Complement clock of differential SRC/SATA clock pair.

30

GNDSRC

PWR

Ground pin for SRC clocks.

31

SRCT3/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

32

SRCC3/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