VR4102 datasheet(33/701 Pages) NEC

33 / 701 page

CHAPTER 1 INTRODUCTION

1.4.2 I/O Registers

The I/O registers are used for peripheral unit control.

Table 1-1. BCU Registers

Function

Address

BCUCNTREG 1

BCU Control Register 1

0x0B00 0000

BCUCNTREG 2

BCU Control Register 2

0x0B00 0002

BCUSPEEDREG

BCU Access Cycle Change Register

0x0B00 000A

BCUERRSTREG

BCU BUS ERROR Status Register

0x0B00 000C

BCURFCNTREG

BCU Refresh Control Register

0x0B00 000E

REVIDREG

Peripheral Unit Revision ID Register

0x0B00 0010

BCURFCOUNTREG

BCU Refresh Cycle Count Register

0x0B00 0012

CLKSPEEDREG

Clock Setting Register

0x0B00 0014

Table 1-2. DMAAU Registers

Function

Address

AIUIBALREG

AIU IN DMA Base Address Register Low

0x0B00 0020

AIUIBAHREG

AIU IN DMA Base Address Register High

0x0B00 0022

AIUIALREG

AIU IN DMA Address Register Low

0x0B00 0024

AIUIAHREG

AIU IN DMA Address Register High

0x0B00 0026

AIUOBALREG

AIU OUT DMA Base Address Register Low

0x0B00 0028

AIUOBAHREG

AIU OUT DMA Base Address Register High

0x0B00 002A

AIUOALREG

AIU OUT DMA Address Register Low

0x0B00 002C

AIUOAHREG

AIU OUT DMA Address Register High

0x0B00 002E

FIRBALREG

FIR DMA Base Address Register Low

0x0B00 0030

FIRBAHREG

FIR DMA Base Address Register High

0x0B00 0032

FIRALREG

FIR DMA Address Register Low

0x0B00 0034

FIRAHREG

FIR DMA Address Register High

0x0B00 0036

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