Specifications

Programmers Model

ID052914 Non-Confidential

Figure 4-5 shows the bit assignments.

Figure 4-5 SYS_LED Register bit assignments

Table 4-6 shows the bit assignments.

4.4.4 100Hz Counter Register

The SYS_100HZ Register characteristics are:

Purpose A 32-bit counter incremented at 100Hz. The 100Hz reference is derived

from the on-board 32.768kHz crystal oscillator. The register is set to zero

by a CB_nRST reset, and when read, returns the count since the last reset.

Usage constraints There are no usage constraints.

Configurations Available in all configurations.

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

Table 4-7 shows the bit assignments.

4.4.5 Flag Registers

The SYS_* Registers characteristics are:

Purpose Provides two 32-bit register locations containing general-purpose flags.

You can assign any meaning to the flags.

Usage constraints There are no usage constraints.

Configurations Available in all configurations.

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

31 8 7 0

Undefined LED[7:0]

Table 4-6 SYS_LED Register bit assignments

Bits Access Name Reset Description

[31:8] Read-only - - Reserved

[7:0] Read-write LED[7:0]

0xXX

Set the corresponding register bit to 1 to light the LED.

Table 4-7 SYS_100HZ Register bit assignments

Bits Name Reset Description

[31:0] SYS_100HZ

0xXXXXXXXX

100Hz counter