ICS9UMS9633BW Datasheet, PDF (3/18 Pages) Integrated Device Technology – ULTRA MOBILE PC CLOCK FOR AUTOMOTIVE USE

ICS9UMS9633BW
ULTRA MOBILE PC CLOCK FOR AUTOMOTIVE USE
Datasheet
SSOP Pin Description (continued)
PIN #
PIN NAME
25 VDDIO_1.5
26 SRCC1_LPR
27 SRCT1_LPR
28 GNDSRC
29 SRCC2_LPR
30 SRCT2_LPR
31 *CR#2
32 FSB_L
33 CPUC2_LPR
34 CPUT2_LPR
35 GNDCPU
36 VDDIO_1.5
37 VDDCORE_3.3
38 CPUC1_LPR
39 CPUT1_LPR
40 GNDCPU
41 VDDIO_1.5
42 CPUC0_LPR
43 CPUT0_LPR
44 CPU_STOP#
TYPE
DESCRIPTION
PWR Power supply for low power differential outputs, nominal 1.5V.
OUT ^{Complementary clock of differential 0.8V push-pull SRC output with integrated 33ohm}
series resistor. No 50ohm resistor to GND needed.
OUT ^{True clock of differential 0.8V push-pull SRC output with integrated 33ohm series}
resistor. No 50ohm resistor to GND needed.
PWR Ground pin for the SRC outputs
OUT
Complementary clock of differential 0.8V push-pull SRC output with integrated 33ohm
series resistor. No 50ohm resistor to GND needed.
OUT ^{True clock of differential 0.8V push-pull SRC output with integrated 33ohm series}
resistor. No 50ohm resistor to GND needed.
IN Clock request for SRC2, 0 = enable, 1 = disable
IN ^{Low threshold input for CPU frequency selection. Refer to input electrical}
characteristics for Vil_FS and Vih_FS values.
OUT ^{Complementary clock of differential pair 0.8V push-pull CPU outputs with integrated}
33ohm series resistor. No 50 ohm resistor to GND needed.
OUT ^{True clock of differential pair 0.8V push-pull CPU outputs with integrated 33ohm}
series resistor. No 50 ohm resistor to GND needed.
PWR Ground pin for the CPU outputs
PWR Power supply for low power differential outputs, nominal 1.5V.
PWR 3.3V power for the PLL core
OUT ^{Complementary clock of differential pair 0.8V push-pull CPU outputs with integrated}
33ohm series resistor. No 50 ohm resistor to GND needed.
OUT ^{True clock of differential pair 0.8V push-pull CPU outputs with integrated 33ohm}
series resistor. No 50 ohm resistor to GND needed.
PWR Ground pin for the CPU outputs
PWR Power supply for low power differential outputs, nominal 1.5V.
OUT ^{Complementary clock of differential pair 0.8V push-pull CPU outputs with integrated}
33ohm series resistor. No 50 ohm resistor to GND needed.
OUT ^{True clock of differential pair 0.8V push-pull CPU outputs with integrated 33ohm}
series resistor. No 50 ohm resistor to GND needed.
IN Stops CPU0 clock when enabled.
45 CLKPWRGD#/PD_3.3
This 3.3V LVTTL input is a level sensitive strobe used to determine when latch inputs
IN are valid and are ready to be sampled. This is an active low input. / Asynchronous
active high input pin used to place the device into a power down state.
46 X2
47 X1
48 VDDREF_3.3
OUT Crystal output, Nominally 14.318MHz
IN Crystal input, Nominally 14.318MHz.
PWR Power pin for the XTAL and REF clocks, nominal 3.3V
IDT^TM/ICS^TM Ultra Mobile PC Clock for Automotive use
3
1425A—09/02/09