Intel E3815 FH8065301567411 데이터 시트
제품 코드
FH8065301567411
PCU – iLB – 8254 Timers
Intel
®
Atom™ Processor E3800 Product Family
Datasheet
4551
37
PCU – iLB – 8254 Timers
The 8254 contains three counters which have fixed uses including system timer and
speaker tone. The reference clock for the counters (1.19318 MHz) is generated from a
14.318 MHz clock divided by 12.
speaker tone. The reference clock for the counters (1.19318 MHz) is generated from a
14.318 MHz clock divided by 12.
37.1
Signal Descriptions
Please see
for additional details.
The signal description table has the following headings:
•
Signal Name: The name of the signal/pin
•
Direction: The buffer direction can be either input, output, or I/O (bidirectional)
•
Platform Power: The reference power plane.
•
Description: A brief explanation of the signal’s function
I
O
I
O
I
O
I
O
I
O
I
O
I
O
O
Platform Control Unit
UA
R
R
T
LPC
GP
IO
IO
RT
C
C
HP
ET
ET
82
5
5
9
AP
IC
IC
82
5
5
4
SM
B
B
iLB
SPI
PMC
Table 330. 8254 Signals
Signal Name
Direction
Plat. Power
Description
ILB_8254_SPKR
O
V1P8S
Speaker: The signal drives an external speaker driver
device, which in turn drives the system speaker. Upon
PMC_PLTRST#, its output state is 0.
This signal is muxed and may be used by other functions.
device, which in turn drives the system speaker. Upon
PMC_PLTRST#, its output state is 0.
This signal is muxed and may be used by other functions.