PC87591L datasheet(337/437 Pages) NSC

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6.0 Host-Controlled Modules and Host Interface (Continued)

Revision 1.07

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Figure 109. Structure of Standard Conﬁguration Register File

Table 48. Logical Device Number (LDN) Assignments

Write accesses to unimplemented registers (i.e., accessing the Data register while the Index register points to a non-existing

register) are ignored; reads return 0016 for all addresses except 7416 and 7516 (DMA configuration registers), which return 0416

(indicating that no DMA channel is active). The configuration registers are accessible immediately after Host Domain reset.

Standard Logical Device Conﬁguration Register Deﬁnitions

In the registers below, any undefined bit is reserved. Unless otherwise noted, the following definitions also hold true:

●

All registers are read/write.

●

All reserved bits return 0 on reads except where noted. To prevent unpredictable results, do not modify these bits.

Use read-modify-write to prevent the values of reserved bits from being changed during write.

●

Write-only registers should not use read-modify-write during updates.

LDN

Functional Block

0416

Mobile System Wake-Up Control (MSWC)

0516

Keyboard and Mouse Controller (KBC) - Mouse Interface

0616

Keyboard and Mouse Controller (KBC) - Keyboard Interface

0F16

Shared BIOS and Security

1016

Real Time Clock

1116

Power Management I/F Channel 1

1216

Power Management I/F Channel 2

0716

2016

3016

6016

7516

FE16

Logical Device Number Register

SuperI/O Configuration Registers

Logical Device Control Register

Standard Logical Device

Special (Vendor-Defined)

Configuration Registers

Banks

2F16

F016

Bank Select

6316

7416

7016

7116

Configuration Registers

(One per Logical Device)

Logical Device

PC87591L Datasheet(PDF) 337 Page - National Semiconductor (TI)

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