PC87373 datasheet(43/174 Pages) NSC

43 / 174 page

3.0 Device Architecture and Configuration (Continued)

www.national.com

Revision 1.1

3.6 REGISTER TYPE ABBREVIATIONS

The following abbreviations are used to indicate the Register Type:

R/W

= Read/Write.

= Read from register (data written to this address is sent to a different register).

= Write (see above).

= Read Only.

= Write Only. Reading from the bit returns 0.

R/W1C = Read/Write 1 to Clear. Writing 1 to a bit clears it to 0. Writing 0 has no effect.

R/W1S = Read/Write 1 to Set. Writing 1 to a bit sets its value to 1. Writing 0 has no effect.

In the registers below, use one of the following methods to handle the reserved bits:

Write 0 to reserved bits, unless another “required value” is speciﬁed. This method can be used for registers contain-

ing bits of all types.

Use read-modify-write to preserve the values of the reserved bits. This method can be used only for registers con-

taining bits of R/W, RO, R/W1C and R/W1S types.

3.7 PC87373 CONFIGURATION REGISTERS

This section describes the PC87373 configuration and ID registers (i.e., registers with first level indexes in the range of

20h

−2Fh). See Table 15 for a summary and directory of these registers.

3.7.1

SuperI/O ID Register (SID)

This register contains the identity number of the device family. The PC87373 family is identified by the value F3h.

Power Well: VSB3

Location:

Index 20h

Type:

Table 15. SuperI/O Conﬁguration Registers

Index

Mnemonic

Power Well

Type

Section

20h

SID

SuperI/O ID

VSB3

3.7.13.7.1

21h

SIOCF1

SuperI/O Configuration 1

VDD3

Varies per bit

3.7.2

22h

SIOCF2

SuperI/O Configuration 2

VSB3

R/W or RO

3.7.3

23h

SIOCF3

SuperI/O Configuration 3

VSB3

R/W or RO

3.7.4

24h

SIOCF4

SuperI/O Configuration 4

VSB3

R/W or RO

3.7.5

25h

Reserved

26h

SIOCF6

SuperI/O Configuration 6

VDD3

Varies per bit

3.7.6

27h

SRID

SuperI/O Revision ID

VSB3

3.7.7

28h

Reserved

29h

CLOCKCF Clock Generator Control

VSB3

Varies per bit

3.7.8

2Ah-2Fh Reserved for National use

Bit

76543210

Name

Family ID

Reset

F3h

Bit

Description

−0 Family ID. Identifies a family of devices with similar functionality but with different implemented options.

PC87373 数据表(PDF) 43 Page - National Semiconductor (TI)

PC87373 数据表(HTML) 43 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

PC87373 数据表(PDF) 43 Page - National Semiconductor (TI)

PC87373 数据表(HTML) 43 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载