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SECTION 4
DSP56302EVM TECHNICAL SUMMARY
MOTOROLA
DSP56302EVMUM/AD, Preliminary
4-1
DSP56302EVM Technical Summary
4.1
4.2
4.3
4.3.1
4.3.2
4.4
4.4.1
4.4.2
4.4.3
4.5
DSP56302EVM DESCRIPTION AND FEATURES . . . . . . . . 4-3
DSP56302 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
MEMORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Flash PEROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
AUDIO CODEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Codec Analog Input/Output. . . . . . . . . . . . . . . . . . . . . . . 4-11
Codec Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Codec Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
COMMAND CONVERTER . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4-2
DSP56302EVMUM/AD, Preliminary
MOTOROLA
DSP56302EVM Technical Summary
DSP56302EVM Description and Features
4.1
DSP56302EVM DESCRIPTION AND FEATURES
An overview description of the DSP56302EVM is provided in the DSP56302EVM
Product Information document (order number DSP56302EVMP/D) included with
this kit. The main features of the DSP56302EVM include the following:
• DSP56302 24-Bit Digital Signal Processor
• Memory
• 16-bit CD-quality audio codec
• Command Converter
4.2
DSP56302 DESCRIPTION
A full description of the DSP56302, including functionality and user information is
provided in the following documents included as a part of this kit:
•
DSP56302 Technical Data (order number DSP56302/D):
Provides features list
and specifications including signal descriptions, DC power requirements, AC
timing requirements, and available packaging
•
DSP56302 User’s Manual (order number DSP56302UM/AD):
Provides an
overview description of the DSP and detailed information about the on-chip
components including the memory and I/O maps, peripheral functionality,
and control and status register descriptions for each subsystem
Note:
The
DSP56302 User’s Manual
is currently not available. The DSP56302
Product Specification, Revision 1.03 is being supplied with this kit as a
replacement document.
•
DSP56300 Family Manual (order number DSP56300FM/AD):
Provides a
detailed description of the core processor including internal status and control
registers and a detailed description of the family instruction set.
Refer to these documents for detailed information about chip functionality and
operation.
Note:
A detailed list of known chip errata is also provided with this kit. Refer to
the
DSP56302 Chip Errata
document for information that has changed since
the publication of the reference documentation listed above. The latest
version can be obtained on the Motorola DSP worldwide web site at
http://www.motorola-dsp.com
.
MOTOROLA
DSP56302EVMUM/AD, Preliminary
4-3
DSP56302EVM Technical Summary
Memory
4.3
MEMORY
The DSP56302EVM uses the following memory:
• 32 K
×
24-bit Fast Static RAM (SRAM) for expansion memory
• 64 K
×
8-bit Flash Programmable Erasable Read-Only Memory (PEROM) for
stand-alone operation
Refer to
Figure 4-1
for the location of the SRAM and PEROM on the DSP56302EVM.
Figure 4-2
shows a functional block diagram of the DSP56302EVM including the
memory devices.
MC145407
JTAG/
OnCE
MCM6306
MCM6306
J3
J9
J8 ISA CONNECTOR
LED
MCM6306
J6
ESSI1/SCI
SW1
DSP56302
MC34164
DSP56002
P1
AT29LV512
J1
J2
POWER
P2
Debug
LED
J4
J7 ESSI0
J5 JTAG
SW2
P5
OUT
SW3
LT1085
COMMAND CONVERTER SELECT
MC74HCT241
P4
HDPHNE
MC74HCT04
Power
LED
CS4215
P3
IN
LT1085
MC33078
Serial #
Figure 4-1
DSP56302EVM Component Layout
4-4
DSP56302EVMUM/AD, Preliminary
MOTOROLA
DSP56302EVM Technical Summary
Memory
SRAM
Three 32 K
×
8
SRAM
Flash
PEROM
SRAM
Data Bus
RS-232
SCI
SSI
J4
JTAG/
OnCE™ Port
DSP56302
Address Bus
HI08
64 K
×
8
I
S
A
J8
I
n
t
e
r
f
a
c
e
(optional)
H
O
S
T
P
C
DSP56002
EXTAL
SCLK
EXTAL
ESSI0
Oscillator
19.6608 MHz
153.6 KHz
J7
16.9344 MHz
In
Headphone
Out
CS4125
24.576 MHz
Figure 4-2
DSP56302EVM Functional Block Diagram
4.3.1
SRAM
The DSP56302EVM uses three banks of 32 K
×
8-bit fast Static RAM (Motorola
MCM6306, labelled U4, U5, and U6) for memory expansion.The MCM6306 uses a
single 3.3 volt power supply and has an access time of 15 ns. The following sections
give more details on the operation of the SRAM.
MOTOROLA
DSP56302EVMUM/AD, Preliminary
4-5

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