pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 336
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pc87591l
Manufacturer Part Number
pc87591l
Description
Lpc Mobile Embedded Controllers
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L.pdf
(437 pages)
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6.0 Host-Controlled Modules and Host Interface
Banked Logical Device Registers Structure
Each functional block is associated with a Logical Device Number (LDN). The configuration registers are grouped into banks,
where each bank holds the standard configuration registers of the corresponding logical device. Table 48 shows the LDN
values of the PC87591x functional blocks. Any value not listed is reserved.
Figure 109 shows the structure of the standard configuration register file. The Host-Controlled Functions control and config-
uration registers are not banked and are accessed by the Index-Data register pair only, as described above. However, the
device control and device configuration registers are duplicated over seven banks for the seven logical devices. Therefore,
two-dimensional indexing is used to access a specific register in a specific bank: the LDN register selects the bank (or logical
device) and the Index register selects the register within the bank. Accessing the Data register while the Index register holds
a value of 30
ister, within the logical device currently selected by the LDN register.
16
or higher physically accesses the logical device configuration registers currently pointed to by the Index reg-
Figure 108. Host-Controlled Domain Detailed Block Diagram
BADDR0-1
HCFGBAH, HCFGBAL
SHBM
Config
Strap
RTC
336
Registers
& Control
Config
(Continued)
Interface
Security
KBC
&
PM
Host I/F
Wake-Up
Shared
System
Control
Mobile
BIOS
LPC
Bus
&
LAD3-0
RI1
RESET1-2
LCLK
SERIRQ
LDRQ
LFRAME
SMI
CLKRUN
LPCPD
RI2
Revision 1.07
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