pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 217
![no-image](/images/no-image-200.jpg)
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: 217 of 401
- Download datasheet (2Mb)
Revision 1.2
4.0 Embedded Controller Modules
HFCG Control Register 1 (HFCGCTRL1)
The HFCGCTRL1 register sets the frequency multiplier’s operating parameters. On V
bugger Interface reset, it is initialized to 0C
Location: 00 FFA0
Type:
Bit
Name
Reset
Bit
0
1
2
3
4
5
6
7
Varies per bit
Type
WO
WO
WO
WO
RO
RO
RO
Reserved
LOAD (Load M and N Values). Write 1 to this bit to perform a normal frequency change by loading
the HFCGML, HFCGMH and HFCGN buffer data to the frequency multiplier. The pre-scaler is
automatically set to a divide by 1. The bit always reads back 0. Results are undefined when more than
one of the following bits is written with 1 at the same time: LOAD, FAST, LOAD96, FAST96.
FAST (Load M, N and I Values). Write 1 to this bit to perform a fast frequency change by loading the
HFCGML, HFCGMH, HFCGN, HFCGIH and HFCGIL input buffer data in the frequency multiplier. The
pre-scaler is automatically set to a divide by 1. The bit always reads back 0. Results are undefined when
more than one of the following bits is written with 1 at the same time: LOAD, FAST, LOAD96, FAST96.
PMC ENABLE (Enable Core Domain Clock). Provides the status of the PMC enable/disable
command. Any data written to this bit is ignored.
0: Disabled
1: Enabled (default)
OHFC (Output Clock Status). Indicates when the HFCG is oscillating and produces a stable clock.
Any data written to this bit is ignored.
0: Not oscillating
1: Oscillating with stable output (default)
IVLID (I Value Valid).
0: Data read is invalid; repeat HFCGIL register read operation (default)
1: Data read is valid; HFCGIH can be read
LOAD96 (Load M and N Values for 96 MHz). Write 1 to this bit to perform normal locking on 96 MHz
frequency by loading the hardwired variables M and N to the frequency multiplier. The pre-scaler is set
according to the value held in HFCGP register. The bit always reads back 0. Results are undefined
when more than one of the following bits is written with 1 at the same time: LOAD, FAST, LOAD96,
FAST96.
FAST96 (Load M, N and I Values for 96 MHz). Write 1 to this bit to perform fast locking on 96 MHz
frequency by loading the hardwired variables M and N and registers HFCGIH and HFCGIL to the
frequency multiplier. The pre-scaler is set according to the value held in HFCGP register. The bit
always reads back 0. Results are undefined results when more than one of the following bits is written
with 1 at the same time: LOAD, FAST, LOAD96, FAST96.
Reserved.
16
7
0
FAST96
6
0
16
LOAD96
.
5
0
(Continued)
IVLID
217
4
0
Description
OHFC
3
1
PENABLE
CC
power-up, Watchdog reset and De-
2
1
FAST
1
0
www.national.com
LOAD
0
0
Related parts for pc87591l-n05
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![pc87591l](/images/no-image3.png)
Part Number:
Description:
Lpc Mobile Embedded Controllers
Manufacturer:
National Semiconductor Corporation
Datasheet:
![PC875](/photos/7/69/76943/425-8-dip_tmb.jpg)
Part Number:
Description:
PHOTOCOUPLER 2CH OUT 8-DIP
Manufacturer:
Sharp Microelectronics
Datasheet:
![mma1270keg](/images/no-image3.png)
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC12034](/images/no-image3.png)
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2350](/images/no-image3.png)
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2324](/images/no-image3.png)
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2301](/images/no-image3.png)
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![NDS8963](/images/no-image3.png)
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM1201](/images/no-image3.png)
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM3501TL-16](/images/no-image3.png)
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![AD9621](/images/no-image3.png)
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM2403](/images/no-image3.png)
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM592M](/images/no-image3.png)
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC10061](/images/no-image3.png)
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![DS36277TMX](/images/no-image3.png)
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet: