PC87309VLJ datasheet(189/192 Pages) NSC

189 / 192 page

Glossary

189

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Glossary

ADDR

Address Register of the Parallel Port in EPP

modes.

AFIFO

Address FIFO for the Parallel Port in Extended Ca-

pabilities Port (ECP) mode 011.

ASCR

Auxiliary Status and Control Register for the

UART2 in Extended operation modes.

ASK-IR

Amplitude Shift Keying Infrared.

BGD(H) and BGD(L)

Baud rate Generator Divisor buffer (High and Low

bytes) for the UARTs.

BSR

Bank Selection Register for the UARTs, when en-

abled, i.e., when bit 7 of this register is 1.

CCR

Conﬁguration Control Register of the Floppy Disk

Controller (FDC) for write operations.

CFIFO

Parallel port data FIFO in Extended Capabilities

Port (ECP) mode 010.

CNFGA and CNFGB

Conﬁguration registers A and B for the Parallel Port

in Extended Capabilities Port (ECP) mode 111.

Confg0

See PP Confg0.

Consumer Remote Control Mode

This IR mode supports all four protocols currently

used in remote-controlled home entertainment

equipment. Also called TV-Remote mode.

Control0, Control2 and Control4

Internal conﬁguration registers of the Parallel Port

in Extended Capabilities Port (ECP) modes.

CSN

Card Select Number register - an 8-bit register with

a unique value that identiﬁes an ISA card when us-

ing PnP protocol.

CTR

Control Register of the Parallel Port in SPP modes.

DASK-IR

Digital Amplitude Shift Keying Infrared.

DATA0, DATA1, DATA2 and DATA3

Data Registers of the Parallel Port in EPP modes.

DATAR

Data Register for the Parallel Port in Extended Ca-

pability Port (ECP) modes 000 and 001.

DCR

Data Control Register for the Parallel Port in Ex-

tended Capabilities Port (ECP) modes.

Device

Any circuit that performs a speciﬁc function, such

as a Parallel Port.

DFIFO

ECP Data FIFO in Extended Capabilities Port

(ECP) mode 011.

DID

Device ID register for the UARTs.

DIR

Digital Input Register of the Floppy Disk Controller

(FDC) for read operations.

DOR

Digital Output Register of the Floppy Disk Control-

ler (FDC).

DSR

Two expressions:

1. Data rate Select Register of the Floppy Disk Con-

troller (FDC) for write operations.

2. The Data Status Register of the Parallel Port in Ex-

tended Capabilities Port (ECP) modes.

DTR

Data Register of the Parallel Port in SPP or EPP

modes.

EAR

Extended Auxiliary Register of the Parallel Port in

Extended Capabilities Port (ECP) modes.

ECP

Extended Capabilities Port.

ECR

Extended Control Register for the Parallel Port in

Extended Capabilities Port (ECP) modes.

EDR

Extended Data Register for the Parallel Port in ex-

tended Capabilities Port (ECP) modes.

EIR

Two expressions:

1. Extended Index Register of the Parallel Port Ex-

tended Capabilities Port (ECP) modes.

2. Event Identiﬁcation Register for the UARTs for read

cycles.

Extended UART Operation Mode

This UART operation mode supports standard

16450 and 16550A UART operations plus addition-

al interrupts and DMA features.

EPP

Enhanced Parallel Port.

EXCR1 and EXCR2

Extended Control Registers 1 and 2 for the UARTs.

FCR

The FIFO Control Register for the UARTs.

FDC

Floppy Disk Controller.

FDD

Floppy Disk Drive.

FER1 and FER2

Function Enable Registers of the Power Manage-

ment.

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