PC87591L datasheet(336/437 Pages) NSC

336 / 437 page

6.0 Host-Controlled Modules and Host Interface (Continued)

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336

Revision 1.07

Figure 108. Host-Controlled Domain Detailed Block Diagram

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 3016 or higher physically accesses the logical device configuration registers currently pointed to by the Index reg-

ister, within the logical device currently selected by the LDN register.

LPC

Interface

LCLK

RESET1-2

LAD3-0

LFRAME

LDRQ

SERIRQ

RI1

RI2

SMI

BADDR0-1

& Control

Registers

Conﬁg

Shared

Strap

Conﬁg

CLKRUN

LPCPD

Bus

RTC

BIOS

Security

System

Wake-Up

Control

Mobile

SHBM

HCFGBAH, HCFGBAL

KBC

Host I/F

PC87591L Datasheet(PDF) 336 Page - National Semiconductor (TI)

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