ICS9248AG-192LFT IDT, Integrated Device Technology Inc, ICS9248AG-192LFT Datasheet
ICS9248AG-192LFT
Specifications of ICS9248AG-192LFT
Related parts for ICS9248AG-192LFT
ICS9248AG-192LFT Summary of contents
Page 1
Integrated Circuit Systems, Inc. Frequency Timing Generator for Transmeta Systems Recommended Application: Transmeta Output Features: • 1CPU(2.5V or 3.3V selectable 66.6MHz & overclocking of 66MHz. • 6 PCI (3.3V) @ 33.3MHz (all are free running selectable). • 1 ...
Page 2
ICS9248-192 Pin Descriptions Pin number Pin name 1 GNDREF PD# 12, 11, 10 PCICLK (5:0) 8 GNDPCI 9 VDDPCI Sel48_24# 15 24_48MHz 13 SDATA 14 SCLK CPU3.3-2.5# 16 48MHz 17 GND48 18 ...
Page 3
CPU Select Functions Power Management Clock Enable Configuration C ...
Page 4
ICS9248-192 General I The information in this section assumes familiarity with I How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) sends a ...
Page 5
Serial Configuration Command Bitmap Byte0: Functionality and Frequency Select Register (default = 0) Bit2 Bit7 Bit6 Bit5 Bit FS4 FS3 FS2 FS1 ...
Page 6
ICS9248-192 Byte 1: PCI Stop ...
Page 7
CPU_STOP# Timing Diagram CPUSTOP asychronous input to the clock synthesizer used to turn off the CPUCLKs for low power operation. CPU_STOP# is synchronized by the ICS9248-192. The minimum that the CPUCLK is enabled (CPU_STOP# high pulse) ...
Page 8
ICS9248-192 PD# Timing Diagram The power down selection is used to put the part into a very low power state without turning off the power to the part. PD asynchronous active low input. This signal is synchronized internally ...
Page 9
Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Logic Inputs . . . . . . . . ...
Page 10
ICS9248-192 Electrical Characteristics - CPUCLK 70° 3.3 V +/-5 PARAMETER SYMBOL Output High Voltage V OH2B Output Low Voltage V OL2B Output High Current I OH2B Output Low Current I OL2B ...
Page 11
Electrical Characteristics - 48MHz 70° 3 VDDL = 2.5V, +/-5 PARAMETER SYMBOL Output High Voltage V OH5 Output Low Voltage V OL5 Output High Current I OH5 Output Low ...
Page 12
ICS9248-192 4.40 mm. Body, 0.65 mm. pitch TSSOP (0.0256 Inch) (173 mil) Ordering Information ICS9248yG-192LF-T Example: ICS XXXX PPP 0540F—10/27/05 In Millimeters SYMBOL COMMON DIMENSIONS MIN 0.05 A2 0.80 b 0.19 ...
Page 13
Revision History Rev. Issue Date Description F 10/27/2005 Added LF to Ordering Information 0540F—10/27/05 13 ICS9248-192 Page # 12 ...