PC87366 datasheet(148/240 Pages) NSC

Nome de Peças	PC87366

Descrição Electrónicos	128-Pin LPC SuperI/O with System Hardware Monitoring, MIDI and Game Ports

PDF	240 Pages

Scroll/Zoom	100%

Fabricante Electrônico	NSC [National Semiconductor (TI)]

Página de início	http://www.national.com

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148 / 240 page

8.0 ACCESS.bus Interface (ACB) (Continued)

148

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8.3

ACB REGISTERS

The following abbreviations are used to indicate the Register Type:

• R/W = Read/Write

• R = Read from a speciﬁc address returns the value of a speciﬁc register. Write to the same address is to a different

• W=Write

• RO = Read Only

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

8.3.1

ACB Register Map

8.3.2

ACB Serial Data Register (ACBSDA)

This shift register is used to transmit and receive data. The most significant bit is transmitted (received) first, and the least

significant bit is transmitted (received) last. Reading or writing to the ACBSDA register is allowed only when the SDAST bit

of the ACBST register is set, or for repeated starts after setting the START bit. An attempt to access this register under other

conditions may produce unpredictable results.

Location:

Offset 00h

Type:

R/W

Offset Mnemonic

Type

Section

00h

ACBSDA

ACB Serial Data

R/W

8.3.2

01h

ACBST

ACB Status

Varies per bit

8.3.3

02h

ACBCST

ACB Control Status

Varies per bit

8.3.4

03h

ACBCTL1

ACB Control 1

R/W

8.3.5

04h

ACBADDR ACB Own Address

R/W

8.3.6

05h

ACBCTL2

ACB Control 2

R/W

8.3.7

Bit

76543210

Name

ACB Serial Data

Reset

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