Specifications

Programmers Model
ARM DUI 0447J Copyright © 2009-2014, ARM. All rights reserved. 4-24
ID052914 Non-Confidential
Configuration Status Register
The SYS_CFGSTAT Register characteristics are:
Purpose Describes if the transfer between the MCC and a Daughterboard
Configuration Controller completes, or if there is an error during the
transfer.
Usage constraints There are no usage constraints.
Configurations Available in all configurations.
Attributes See Table 4-3 on page 4-8.
Figure 4-14 shows the register bit assignments.
Figure 4-14 SYS_CFGSTAT Register bit assignments
Table 4-20 shows the register bit assignments.
Example 4-1 shows pseudo code for changing the SYS_CFG registers.
Example 4-1 Pseudo code for changing the SYS_CFG registers
Sys_cfg ( write, function, site, position, dcc, device, data)
// check if busy
if (SYS_CFGCTRL & SYS_CFG_START)
return FAILURE
// clear the complete bit in the SYS_CFGSTAT status register
SYS_CFGSTAT = 0
if (write)
// write data
SYS_CFGDATA = data
// set control register
SYS_CFGCTRL = SYS_CFG_START | SYS_CFG_WRITE | dcc | function | site | position | device
// wait for complete flag to be set while (!(SYS_CFGSTAT & SYS_CFG_COMPLETE)
// check error status and return error flag if set
if (SYS_CFGSTAT & SYS_CFG_ERROR) return FAILURE
31
0
Undefined
1
2
Error
Error
Complete
Table 4-20 SYS_CFGSTAT Register bit assignments
Bits Name Description
[31:2] − Undefined
[1] Error 1: configuration error. This bit is cleared when bit S of SYS_CFGCTRL is set.
[0] Complete 1: configuration complete. This bit is cleared when bit S of SYS_CFGCTRL is set.