HB28C048A6 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HB28C048A6

FLASH ATA Card 48 MByte/32 MByte/16 MByte

Hitachi -> Renesas Electronics 

HB28C048/032/016A6

2. Task File register access specifications

There are two cases of Task File register mapping, one is mapped I/O address area, the other is mapped Memory address

area. Each case of Task File register read and write operations are executed under the condition as follows. That area can

be accessed by Byte/Word/Odd Byte mode which are defined by PC card standard specifications.

(1) I/O address map

Task File Register Read Access Mode (1)

Mode

-REG -CE2 -CE1 A0

Standby mode

×

H

H

×

Byte access (8-bit)

L

H

L

L

L

H

L

H

Word access (16-bit) L

L

L

×

Odd byte access (8-bit) L

L

H

×

Note: ×: L or H

-IORD -IOWR -OE

×

×

×

L

H

H

L

H

H

L

H

H

L

H

H

-WE D8 to D15 D0 to D7

×

High-Z High-Z

H

High-Z even byte

H

High-Z odd byte

H

odd byte even byte

H

odd byte High-Z

Task File Register Write Access Mode (1)

Mode

-REG -CE2 -CE1 A0

Standby mode

×

H

H

×

Byte access (8-bit)

L

H

L

L

L

H

L

H

Word access (16-bit) L

L

L

×

Odd byte access (8-bit) L

L

H

×

Note: ×: L or H

-IORD -IOWR -OE

×

×

×

H

L

H

H

L

H

H

L

H

H

L

H

-WE D8 to D15 D0 to D7

×

Don’t care Don’t care

H

Don’t care even byte

H

Don’t care odd byte

H

odd byte even byte

H

odd byte Don’t care

Task File Register Access Timing Example (1)

A0 to A10

-REG

-CE2/-CE1

-IORD

- IOWR

D0 to D15

Dout

read cycle

Din

write cycle

13

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