876784 Intel, 876784 Datasheet - Page 69
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
Lead Free Status / RoHS Status
Compliant
- Current page: 69 of 848
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Signal Description
2.16
Table 2-16. Real Time Clock Interface
2.17
Table 2-17. Other Clocks
Intel
®
ICH7 Family Datasheet
Real Time Clock Interface
Other Clocks
SATA_CLKP
SATA_CLKN
and Mobile
DMI_CLKP,
DMI_CLKN
(Desktop
RTCX1
RTCX2
Name
Name
CLK14
CLK48
Only)
Type
Special
Special
Type
I
I
I
I
Oscillator Clock: This clock signal is used for the 8254 timers. It runs at
14.31818 MHz. This clock is permitted to stop during S3 (or lower)
states.
48 MHz Clock: This clock signal is used to run the USB controller. It runs
at 48.000 MHz. This clock is permitted to stop during S3 (or lower)
states.
100 MHz Differential Clock: These signals are used to run the SATA
controller at 100 MHz. This clock is permitted to stop during S3/S4/S5
states.
100 MHz Differential Clock: These signals are used to run the Direct
Media Interface. They run at 100 MHz.
Crystal Input 1: This signal is connected to the 32.768 kHz crystal. If
no external crystal is used, RTCX1 can be driven with the desired clock
rate.
Crystal Input 2: This signal is connected to the 32.768 kHz crystal. If
no external crystal is used, RTCX2 should be left floating.
Description
Description
69
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