CS493002-CL Cirrus Logic, CS493002-CL Datasheet - Page 63

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

require external SRAM. Please refer to the
CS4932X/CS49330 Part Matrix vs. Code Matrix
for more detail about each particular application
code.
The speed of external ROM or Flash Memory need
only be 330nS (or faster) which stores the
application codes, while the speed of the SRAM
must be 70nS or faster.
DS339PP4
CS493254
Dolby Digital with PLII +
Cinema Re-EQ,
HDCD
CS493264
Dolby Digital with C.E.S., MPEG
Multichannel with C.E.S., DTS
with C.E.S., MP3
Dolby Digital with PLII with
C.E.S., MPEG Multichannel with
PLII, DTS-ES, DTS Neo:6
Dolby Digital with PLII with
C.E.S., MPEG Multichannel with
PLII, DTS-ES with PLII, DTS
Neo:6, HDCD, LOGIC7, MP3,
Virtual Dolby Digital with VMAx
VirtualTheater
CS493292
Dolby Digital with PLII with
C.E.S., MPEG Multichannel with
PLII, DTS-ES, DTS Neo:6,
HDCD, SRS Circle Surround II,
C.O.S., MPEG-2: AAC
N/A, All IBA codes are loaded
N/A, All IBA codes are loaded
using Host Boot technique
using Host Boot technique
ROM Content
Table 12. Memory Requirements for Example 5.1, 6.1 and 7.1 Channel Systems
Host Boot technique
32 + 32 = 64 Kbytes
Host Boot technique
N/A, All IBA codes
N/A, All IBA codes
are loaded using
are loaded using
32 * 4 pages =
32 * 4 pages =
Image Size
128 Kbytes
128 Kbytes
256 Kbytes
256 Kbytes
32 * 8 =
32 * 8 =
Host Boot technique
Host Boot technique
Number of Pages
N/A, All IBA codes
N/A, All IBA codes
are loaded using
are loaded using
8.7. External Memory Examples
8.7.1. Non-Paged Autoboot Memory
The most rudimentary memory design discussed
above is the non-paged memory. In a non-paged
design, the DSP can only access one item in
memory which could be either a single full
download code load. The memory image given in
Figure 40 is an example of a non-paged memory
image.
Only 15 of the 16 output bits of the address latches
would be connected to address bits A0-A14 of the
Required
2
4
4
8
8
CS49300 Family DSP
Dolby Digital with
Dolby Digital with
Codes not avail-
Stored in Host
IBA Code(s)
C.O.S., DTS
N/A, No IBA
able for the
CS493292
C.O.S.
C.O.S.
C.O.S.
C.O.S.
C.O.S.
PL II,
PL II,
Dolby Digital with
Dolby Digital with
DTS 5.1 Channel
Channel System
Channel System
Channel System
Channel System
Premium 6.1/7.1
Channel System
Type of Design
6.1/7.1 Channel
Pro Logic II 5.1
Pro Logic II 5.1
Enhanced 6.1
Dolby Digital/
Enhanced
Enhanced
Basic 6.1
with AAC
Premium
Support
System
System
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