UM0434 datasheet(343/390 Pages) STMICROELECTRONICS

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Nexus3 module

UM0434

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12.4.7

Read/Write access address register (RWA)

The read/write access address register, shown in

Table 233, provides the system bus

address to be accessed when initiating a read or a write access.

12.4.8

Watchpoint trigger register (WT)

The watchpoint trigger register, shown in

Table 234, allows the watchpoints defined within

the e200z3 Nexus1 logic to trigger actions. These watchpoints can control program and/or

data trace enable and disable. The WT bits can be used to produce an address related

window for triggering trace messages.

Half @110

1 1 0

—

AHB[63–56]

AHB[55–48]

Word @000

0 0 0

AHB[31–24]

AHB[23–16]

AHB[15–8]

AHB[7–0]

Word @100

1 0 0

AHB[63–56]

AHB[55–48]

AHB[47–40]

AHB[39–32]

Doubleword @000

0 0 0

—

First RWD pass

AHB[31–24]

AHB[23–16]

AHB[15–8]

AHB[7–0]

Second RWD pass

AHB[63–56]

AHB[55–48]

AHB[47–40]

AHB[39–32]

“—” indicates byte lanes which will contain unused data.

Table 232.

RWD byte lane data placement (continued)

Transfer sizeand

byte offset

RWA(2:0)

RWD

31–24

23–16

15–8

7–0

Table 233.

Read/write access address register

Field

Read/Write Data

Reset

All zeros

R/W

Read/Write

Number

0xA

Table 234.

Watchpoint trigger register

2928

2625

2322

2019

Field

PTS

PTE

DTS

DTE

—

Reset

All zeros

R/W

Read/Write

Number

0xB

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