Specifications

Programmers Model

ID052914 Non-Confidential

Note

The same interface is accessible from the MCC command line. See the ARM

Versatile

™

Express

Configuration Technical Reference Manual CFG command.

Configuration Control Register

The SYS_CFGCTRL Register characteristics are:

Purpose Controls the transfer of data across the SPI interface between the MCC

and a Daughterboard Configuration Controller.

Usage constraints See Table 4-18 and Table 4-19 on page 4-23.

Configurations Available in all configurations.

Attributes See Table 4-3 on page 4-8.

Figure 4-13 shows the register bit assignments.

Figure 4-13 SYS_CFGCTRL Register bit assignments

Table 4-18 shows the register bit assignments.

31 0

DCC

Function Position Device

1112

15161819

202526 172930

Site

Undefined

Write

Start

Table 4-18 SYS_CFGCTRL Register bit assignments

Bits Name Description

[31] Start Initiates the transfer.

[30] Write Read or write data:

Write.

Read.

[29:26] DCC

Daughterboard Configuration Controllers. This is a 4-bit number for the

particular

Daughterboard Configuration Controller on a board to access.

Examples are:

b0000

DCC 0.

b0001

DCC 1.

[25:20] Function 6-bit value that describes the function of the device being written to. See

SYS_CFGCTRL function values on page 4-23.

[19:18] - Undefined.