MSC8144ADS Freescale, MSC8144ADS Datasheet - Page 40

• Manufacturer Part Number: MSC8144ADS
• Manufacturer: Freescale

Specifications of MSC8144ADS

• Lead Free Status / RoHS Status: Compliant

ADS Functional Description
5.10.2
The device used for the SHMOO programmable clock is the ICS307-03 by ICS. The ICS307-03
is a dynamic, serially programmable clock source that is flexible and takes up minimal board
space. Output frequencies are programmed via the host SPI port. In advanced PLL coupled to an
array of configurable output dividers and three outputs allows low-jitter generation of frequencies
from 200 Hz to 270 MHz. The device can be reprogrammed during operation, where the output
frequency may be determined at run time. The CLK1 output may be connected to the MSC8144
CLKIN pin. The CLK2 output drives variant frequencies to MSC8144 PLL2 (Figure 5-11),
which is connected to the PCI_CLK_IN input.
5-16
SHMOO Programmable Clock
Clock
Host
SPI
Osc
ICS30703
Figure 5-11. Programmable Clock Block Diagram
BCSR Ctrl
PD
PCI Clock
PMC
Figure 5-10. MSC8144 Clock Scheme
1
2
100MHz
PCI Host
Osc.
JUMPER
Clock
MSC8144ADS MSC8144, Rev. 0
1
PCI_CLK_IN
Ext CLK
LVDS
CLKIN
PCI_CLK_IN
SRIO_REF_CLK
SRIO_REF_CLK
MSC8144
CLKOUT
Freescale Semiconductor
CLKOUT