Datasheet

Mobile Intel
®
Celeron
®
Processor (0.18µ) in BGA2 and Micro-PGA2 Packages
Datasheet 283654-003 12
2. Mobile Intel Celeron Processor
Features
2.1 New Features in the Mobile Intel Celeron Processor
2.1.1 On-die GTL+ Termination
The termination resistors for the GTL+ system bus are integrated onto the processor die. The
RESET# signal does not have on-die termination and requires an external 56.2Ω ±1% terminating
resistor.
2.1.2 Streaming SIMD Extensions
The mobile Intel Celeron processor implements Streaming SIMD (single instruction, multiple
data) extensions. Streaming SIMD extensions can enhance floating point, video, sound, and 3-D
application performance.
2.1.3 Signal Differences Between the Mobile Intel Celeron
Processors in the BGA1/Micro-PGA1 and the BGA2/Micro-
PGA2
With the exception of BCLK, PICCLK, and PWRGOOD, the CMOS inputs and Open-drain
outputs have changed from 2.5V tolerant to 1.5V tolerant.
Table 1. New BGA2/Micro-PGA2 Signals
Signals Function
CLKREF System bus clock trip point control
CMOSREF 1.5V CMOS input buffer trip point control
EDGECTRLP GTL+ output buffer control
BSEL[1:0] Processor system bus speed selection
RSVD Reserved, may be defined in the future
RTTIMPEDP On-die GTL+ termination control
VCCT On-die GTL+ termination current supply
VID[4:0] Voltage Identification