pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 58
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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: 58 of 401
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3.0 Power, Reset and Clocks
3.1
3.1.1
The PC87591L-N05 has four power planes (wells), as shown in Table 8.
For correct PC87591L-N05 operation, V
is applied, protection is provided against rise-time differences only.
3.1.2
The PC87591L-N05 has three main power states:
The following power states are illegal:
• Battery Fail
• Power Fail
• Power Applied
• Host domain on and Suspend and/or Analog off (i.e., V
• Suspend on and Analog off (i.e., V
Host Domain, Suspend, Analog and Battery Backed power planes are all powered off (i.e., in this case V
AV
Host Domain, Suspend and Analog power planes are powered off. Battery Backed power plane is powered on (i.e.,
in this case V
Suspend, Analog and Battery Backed power planes are powered on, Host Domain power plane may be on or off (i.e.,
in this case V
The Power Applied state has several sub-states, depending on the domain:
— The host domain has Host Power On and Host Power Off states, according to the V
— The core domain and host-core interface have Active and Idle states. For details, see Section 4.17 on page 208.
CC
POWER
Power Planes
Power States
Host Domain
Suspend
Analog
Core
Battery Backed
and V
1. See the tables in Section 2.2.1 on page 38 to Section 2.2.13, specifically the Power Well col-
2. V
3. V
Power Plane
umn, for how the PC87591L-N05 external interface signals are assigned to various power
planes.
than the minimum value defined; otherwise, V
on the switching between them, refer to Section 6.2.9 on page 322.
BAT
CORF
PP
DD
CC
is an internal power signal derived from V
are all inactive).
, V
, AV
is generated from V
CC
CC
and AV
are active, V
Powers the LPC interface and Host Controlled
Functions (except for RTC and MSWC) and
some external signals
Powers the core domain, the host-core interface,
the MSWC and their external signals
Powers some internal analog circuits and their
external signals
Powers the internal (core) logic of all the device
modules
Powers the RTC, some MSWC registers, the
32.768 KHz clock/crystal oscillator signals and
some other storage elements that should be
preserved at all times
CC
are inactive; V
CC
CC
BAT
Table 8. PC87591L-N05 Power Planes
CC
must be applied whenever V
active and AV
and V
by an on-chip power converter.
1
Description
DD
BAT
1
1
may be active or inactive).
is active).
CC
DD
inactive) and vice-versa.
58
CC
BAT
active and V
or V
is used as the V
BAT.
1
DD
V
is applied. Apply AV
PP
CC
is taken from V
and/or AV
PP
Power Pins
source. For more details
V
AV
V
CORF
V
V
PP
DD
CC
CC
CC
DD
3
CC
are inactive).
2
CC
status;
if it is greater
at the same time that V
Ground Pins
AGND
GND
GND
GND
GND
DD
Revision 1.2
, V
CC
CC
,
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