CS493002-CL Cirrus Logic, CS493002-CL Datasheet - Page 53

• Manufacturer Part Number: CS493002-CL
• Description: Multi-Standard Audio Decoder Family
• Manufacturer: Cirrus Logic

DS339PP4
DOWNLOAD FILE SIZE)
SUCCESS_RECEIVED,
WRITE_*(HW_CONFIG_MSG,
WRITE_*(DOWNLOAD_
RESET(LOW)
READ_*(MESSAGE)
READ_*(MESSAGE)
BOOT, MSG_SIZE)
WRITE_*(.LD FILE,
BOOT_SUCCESS?
WAIT 5 MS
INTREQ
INTREQ
WRITE_*(BOOT_
BOOTSTART?
MESSAGE ==
MESSAGE ==
MSG-SIZE)
(NOTE 5)
LOW?
LOW?
Y
Y
Y
Y
HW_MSG_SIZE)
(NOTE 4)
(NOTE 1)
N
N
N
N
Figure 33. Typical Serial Boot and Download Procedure
TIMEOUT AFTER
TIMEOUT AFTER
EXIT(ERROR)
EXIT(ERROR)
20MS
20MS
RESET(HIGH)
WRITE_*(SW_CONFIG_MSG,
(NOTE 3)
(NOTE 3)
(NOTE 5)
SW_MSG_SIZE)
(NOTE 2)
Notes: 1. RESET must be held LOW for
2. It should be noted that mode
3. Time-out values reflect worst
4. 5 ms is typical but this time is
5. Hardware configuration
t
pins are used to configure the
CS493XX serial communication
mode. These mode pins are
latched internally on the rising
edge of reset. The pins can be
set dynamically by a
microprocessor or can be
statically pulled HIGH or LOW.
If these pins are driven
dynamically, setup and hold
times must be satisfied as
stated in the CS493XX Data
Sheet . More information about
the function of the mode pins
can be found in the CS493XX
Data Sheet and in
“Control” on page
case response time for the
CS493XX. The values shown
may be used for the host’s time-
out control loop.
application code specific and
may be as high as 10 ms. Wait
times should be verified by the
designer.
messages are covered in
Section 6, “Control” on page
Application configuration
messages are covered in each
application code user’s manual.
rstl
DOWNLOAD COMPLETE
WRITE_*(KICKSTART,
WAIT
.
500 µs
(NOTE 5)
CS49300 Family DSP
MSG_SIZE)
32.
Section 6,
32.
53