pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 220
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pc87591l-n05
Manufacturer Part Number
pc87591l-n05
Description
Lpc Mobile Embedded Controller
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L-N05.pdf
(401 pages)
- Current page: 220 of 401
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4.0 Embedded Controller Modules
HFCG Control Register 2 (HFCGCTRL2)
The HFCGCTRL2 register sets the frequency multiplier’s operating parameters. On V
bugger Interface reset, it is initialized to 00
Location: 00 FFAE
Type:
Bit
Name
Reset
7-5
Bit
0
1
2
3
4
R/W1C SCESTR (SIO Clock Enable Start). Indicates that a rising edge was detected on the SENABLE
R/W1C SCESTP (SIO Clock Enable Stop). Indicates that a falling edge was detected on the SENABEL
R/W1C MONERR (Monitor Error). Indicates that a 48 MHz monitor error was detected during the last
Varies per bit
Type
RO
RO
SIO ENABLE (Enable Host Domain Clock). Provides the status of the SuperI/O enable/disable
command. Any data written to this bit is ignored.
0: Disabled (default)
1: Enabled
signal. When set, an interrupt is sent to the ICU (level high). Cleared by writing 1 to it. This interrupt
may be masked only in the ICU.
0: No rising edge on SENABLE was detected (default)
1: A rising edge on SENABLE was detected and an interrupt is sent to the ICU
signal. When set, an interrupt is sent to the ICU (level high). Cleared by writing 1 to it. This interrupt
may be masked only in the ICU.
0: No falling edge on SENABLE was detected (default)
1: A falling edge on SENABLE was detected and an interrupt is sent to the ICU
Watchdog or Debugger reset process. Note that this bit is cleared by all resets except Watchdog and
Debugger Interface resets. Once set, this bit is cleared by writing 1 to it.
0: No error detected (default)
1: 48 MHz monitor detected an out of range frequency
96MON (96 MHz Oscillations On). Indicates the oscillation frequency at which the HFCG is operating.
0: HFCG is oscillating as defined by the HFCGM and HFCGN. The core clock is identical to HFCG fre-
1: HFCG is oscillating at 96 MHz. The core clock is pre-scaled as defined by HFCGP.
Reserved.
16
7
0
quency (default).
Reserved
6
0
16
.
5
0
(Continued)
96MON
220
4
0
Description
MONERR
3
0
SCESTP
CC
power-up, Watchdog reset and De-
2
0
SCESTR
1
0
SENABLE
0
0
Revision 1.2
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