ICS9248-80
ICS9248-80 is General Purpose 133MHz System Clock manufactured by Renesas.
Description
The ICS9248-80 is a general purpose system clock. It provides 8 output CLKs, 1 REF CLK and excellent power management features through CLK_STOP#.
Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces EMI by 8d B to 10 d B. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-80 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.
Features
Extended temperature range (-20°C to +70°C) Output features
:
- 8 CLK outputs @ 3.3V, up to 133.34MHz.
- 1-REF output @ 3.3V, 14.31818MHz. Spread Spectrum for EMI control I2C interface to stop clocks, select spread and frequency. Excellent power managment feature through CLK_STOP# and individual stop clocks through I2C. Input is from a 14.31818MHz crystal.
Block Diagram
Pin Configuration
28-Pin 209 mil SSOP
- These inputs have a 120K internal pull-up to 3.3V.
- - These inputs have a 120K internal pull-down to GND.
Pentium II is a trademark of Intel Corporation I2C is a trademark of Philips Corporation
ICS9248
- 80
Pin Descriptions
Pin number
Pin name
GNDREF
X1
X2
6, 7, 14, 27 FS (0:3)
8, 11 9, 18, 24
GND VDDO CLK_STOP#
SDATA
SCLK
15, 21
GNDO
16, 17, 19, 20, 22, 23, 25, 26 CLK (0:7)
VDDREF
Type OUT PWR IN OUT PWR IN PWR PWR IN IN IN...
