TMPR4956C datasheet(196/286 Pages) TOSHIBA

Part #	TMPR4956C

Description	64-Bit TX System RISC TX49 Family

PDF	286 Pages

Scroll/Zoom	100%

Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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196 / 286 page

Chapter 11 TX4956 System Interface

11-28

11.2.11.3 Read requests

Figure 11.2.25 illustrates the SysCmd format in the case of read requests.

000

Read request specific

Figure 11.2.25 Bit Definition of SysCmd Bus for Read Requests

Table 11.2.8, Table 11.2.9, and Table 11.2.10 indicate the methods for specifying SysCmd[4:0]

for read requests.

Table 11.2.8 Specification Method of SysCmd[4:3] for Read Requests

SysCmd[4:3]

Read Properties

0-1

Reserved

Non-coherent block read

Word or partial word read

Table 11.2.9 Specification Method of SysCmd[2:0] for Block Read Requests

SysCmd[2]

Reserved

SysCmd[1:0]

Read Block Size

Reserved

8 words

2-3

Reserved

Table 11.2.10 Data Size Expressed by SysCmd[2:0] for Word or Partial Word Read Requests

SysCmd[2:0]

Read Data Size

1 byte valid (byte)

2 bytes valid (half-word)

3 bytes valid (tri-byte)

4 bytes valid (word)

Reserved

TMPR4956C Datasheet(PDF) 196 Page - Toshiba Semiconductor