Master Boot Procedure; Figure 2-3. Master Boot Sequence Flowchart; Table 2-5. Boot Command Messages For Cs485Xx - Cirrus Logic CS485 Series User Manual

Master Boot Procedure

CS485xxr Hardware User's Manual
Table 2-5 is a quick reference showing the different boot commands understood by the
mnemonic and actual hex value, used in
SLAVE_BOOT
SOFT_RESET
2.4 Master Boot Procedure
A master boot sequence is initiated immediately after the rising edge of RESET. The location of the overlay
to boot is outlined in
overlay from address 0x0. It should be noted that the loaded overlay must reconfigure one of the control
ports to be slave to the bus for a system host controller to configure the part. Thus, this type of boot process
will be useful in systems without a system host controller or with a simple controller that only performs a
monitoring task. Currently this mode is not used for any applications.
2-7
CS485xx

Table 2-5. Boot Command Messages for CS485xx

MNEMONIC
0x80000000
0x40000000
Table 2-1. Once the rising edge of RESET has occurred, the
Set HS[4:0 ] Pins For

Figure 2-3. Master Boot Sequence Flowchart

Copyright 2009 Cirrus Logic, Inc.
boot sequences.
VALUE DETAILED TABLE
Table 2-2
Table 2-3
Start
RESET ( Low)
Operational Mode
RESET ( High)
Done
, in
CS485xx
will load a single
CS485xx
DS734UM7