Z80189 Datasheet, PDF(62/107 Page) Zilog, Inc. – GENERAL-PURPOSE EMBEDDED CONTROLLERS

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

Z80189 Datasheet, PDF (62/107 Pages) Zilog, Inc. – GENERAL-PURPOSE EMBEDDED CONTROLLERS

◁

Zilog

Z80189 MIMIC REGISTER MAP

PRELIMINARY

Z80189/Z8L189

GENERAL-PURPOSE EMBEDDED CONTROLLERS

MMC MIMIC Master Control Reg.

IUS/IP Interrupt Pending

IE Interrupt Enable

IVEC Interrupt Vector

RTCR Receive Time Constant

TTCR Transmit Time Constant

DLM Divisor Latch (MSByte)

DLL Divisor Latch (LSByte)

SCR Scratch Register

MSR Modem Status Register

LSR Line Status Register

MCR Modem Control Register

LCR Line Control Register

IER Interrupt Enable Register

RBR Receiver Buffer Register

THR Transmitter Holding Reg.

FSCR FIFO Status and Control

TTTC Tran. Timeout Time Const.

RTTC Rec. Timeout Time Const.

IIR Interrupt Identification

FCR FIFO Control Register

MPU Addr/Access

XXFF R/W

XXFE R/Wb7

XXFD R/W

XXFC R/W

XXFB R/W

XXFA R/W

XXF9 R only

XXF8R only

XXF7 R only

XXF6 R/Wb7-4

XXF5 R/Wb6432

XXF4 R only

XXF3 R only

XXF1 R only

XXF0 W only

XXF0 R only

XXEC R/W7-4

XXEB R/W

XXEA R/W

None

XXE9 R only

PCAddr/Access

None

01,DLAB=1,R/W

00,DLAB=1,R/W

07 R/W

06 R only

05 R only

04 R/W

03 R/W

01,DLAB=0 R/W

00,DLAB=0 R only

00,DLAB=0 W only

None

02 R only

02 W only

Z80189 PC DMA MAILBOX BRG,COM_PORT, PIA AND MISC REGISTERS

PA Data Direction Register

PA Data Register

MIMIC Modification Register

ROM Address Boundary Reg.

RAMLBR RAM Lower Boundary Reg.

RAMUBR RAM Upper Boundary Reg.

PB Data Register

PB Data Direction Register

BRG High Constant

BRG Low Constant

Interrupt Edge/Pin Mux Control

PC Data Register

PC Data Direction Register

Z80189 Enhancements Register

WSG Chip Select Register

IOBRG Register

COM Decode Register

System Configuration Register

MPU Addr/Access

XXEDH R/W

XXEEH R/W

XXE9 W only

XXE8 R/W

XXE7 R/W

XXE6 R/W

XXE5 R/W

XXE4 R/W

XXE1 R/W

XXE0 R/W

XXDF R/W

XXDE R/W

XXDD R/W

XXD9 R/W

XXD8 R/W

XXD6 R/W

XXD7 R/W

XXEF R/W

PCAddr/Access

None

DS971890301

▷