TMPR4925 datasheet(137/590 Pages) TOSHIBA

tên linh kiện	TMPR4925

Giải thích chi tiết về linh kiện	64-Bit TX System RISC TX49 Family

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Chapter 7 External Bus Controller

7-27

7.4.2

External Bus Base Address Register (EBBARn)

0x9000 (ch. 0), 0x9008 (ch. 1)

0x9010 (ch. 2), 0x9018 (ch. 3)

0x9020 (ch. 4), 0x9028 (ch. 5)

0x9030 (ch. 6), 0x9038 (ch. 7)

Channel 0 can be used as Boot memory. Therefore, the default is set by the Boot signal (see “7.3.2

Global/Boot-up Options”). Channels 1 - 7 have the same register configuration as Channel 0, but they

have different defaults than Channel 0.

BA[31:20]

Reserved

R/W

:Type

0x1FC(ch0,7)/0x000(ch1~6)

: Initial value

Reserved

: Type

: Initial value

Only in the case of Channel 0 are fields with different defaults in the “Channel 0/Other channel” state.

Bits

Mnemonic

Field Name

Description

31:20

BA[31:20]

Base Address

External Bus Control Base Address (Initial value: 0x1FC/0x000, R/W)

A physical address is used to specify the base address. The upper 12 bits [31:20] of

the physical address are compared to the value of this field.

19:0



Reserved



Figure 7.4.2 External Bus Base Address Register

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