M69KB096AB datasheet(28/73 Pages) STMICROELECTRONICS

部品番号	M69KB096AB

部品情報	64 Mbit (4Mb x 16), 104MHz Clock Rate, 1.8V Supply, Bare Die, Burst PSRAM

PDF	73 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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28 / 73 page

7 Configuration Registers

M69KB096AB

28/73

Figure 7.

Set Configuration Register (Software Method)

Only the Bus Configuration Register (BCR) and the Refresh Configuration Register (RCR) can be modified.

To program the BCR or the RCR on last bus write cycle, DQ0-DQ15 must be set to ‘0001h’ and ‘0000’ respectively.

The highest order address location is not modified during this operation.

The control signals E, G, W, LB and UB, must be toggled as shown in the above figure.

Figure 8.

Read Configuration Register (Software Method)

To read the BCR, RCR or DIDR on last bus read cycle, DQ0-DQ15 must be set to ‘0001h’, ‘0000’ and ‘0002’ respectively.

The highest order address location is not modified during this operation.

The control signals E, G, W, LB and UB, must be toggled as shown in the above figure.

Addr.

7FFFFFh

LB, UB

AI09469f

7FFFFFh

DQ0-DQ15

(2)

Configuration

tEHEL2

Addr.

7FFFFFh

LB, UB

AI09470f

7FFFFFh

DQ0-DQ15

(1)

Configuration

tEHEL2

M69KB096AB データシート(PDF) 28 Page - STMicroelectronics