Z86M1720ASC データシートの表示（PDF） - Zilog

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Z86M1720ASC

PCMCIA Interface Solution

Zilog 

Z86017/Z16017 PCMCIA Interface Solution

Product Specification

60

EEPROM Register

Address: SELECT 19h

Name: Window 3 Start Address LSB

Type: Write/Read

Table 39. Window 3 Start Address LSB: Address 19h

Bit Placement Bit Name

Bits 7-0

Description

LSB starting Address for Port 3.

EEPROM Register

Address: SELECT 1Ah

Name: Window 3 Start/Range Address MSB

Type: Write/Read

Table 40. Window 3 Start/Range Address MSB: Address 1Ah

Bit Placement Bit Name

Bits 2-0

Bit 3

EN_WRITE_PROTECT

Bits 6-4

Bit 7

EN_DMA_ACK

Description

Bits 8, 9, and 10 of the starting address range of Port 3.

When this bit is set, the RWPROT bit in the pin

replacement register is used to inhibit writing to the

external peripherals. When this bit is cleared, PROT is

ignored.

Bits 8, 9, and 10 of the starting address range of Port 3.

When this bit is set, ATA_DMA_Acknowledge is set when

the address space is accessed, and Speaker Out on the

PCMCIA interface is used as DREQ.

PS012002-1201

Programming Internal Registers

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