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參數(shù)資料
| 型號： | ADSP-2183 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LM2941/LM2941C 1A Low Dropout Adjustable Regulator; ; Container: Tray |
| 中文描述： | DSP的微機 |
| 文件頁數(shù)： | 11/31頁 |
| 文件大?。?/td> | 252K |
| 代理商： | ADSP-2183 |
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ADSP-2183
–11–
REV. C
Target Board Connector for EZ-ICE Probe
The EZ-ICE connector (a standard pin strip header) is shown
in Figure 7. You must add this connector to your target board
design if you intend to use the EZ-ICE. Be sure to allow enough
room in your system to fit the EZ-ICE probe onto the 14-pin
connector.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
KEY (NO PIN)
RESET
BR
BG
TOP VIEW
EBG
EBR
ELOUT
EE
EINT
ELIN
ECLK
EMS
ERESET
Figure 7. Target Board Connector for EZ-ICE
The 14-pin, 2-row pin strip header is keyed at the Pin 7 loca-
tion—you must remove Pin 7 from the header. The pins must
be 0.025 inch square and at least 0.20 inch in length. Pin spac-
ing should be 0.1
×
0.1 inches. The pin strip header must have
at least 0.15 inch clearance on all sides to accept the EZ-ICE
probe plug. Pin strip headers are available from vendors such as
3M, McKenzie, and Samtec.
Target Memory Interface
For your target system to be compatible with the EZ-ICE emu-
lator, it must comply with the memory interface guidelines
listed below.
PM, DM, BM, IOM and CM
Design your Program Memory (PM), Data Memory (DM),
Byte Memory (BM), I/O Memory (IOM), and Composite
Memory (CM) external interfaces to comply with worst case
device timing requirements and switching characteristics as
specified in the DSP’s data sheet. The performance of the
EZ-ICE may approach published worst case specification for
some memory access timing requirements and switching
characteristics.
Note:
If your target does not meet the worst case chip specifica-
tion for memory access parameters, you may not be able to
emulate your circuitry at the desired CLKIN frequency. De-
pending on the severity of the specification violation, you may
have trouble manufacturing your system as DSP components
statistically vary in switching characteristic and timing require-
ments within published limits.
Restriction:
All memory strobe signals on the ADSP-2183
(
RD
,
WR
,
PMS
,
DMS
,
BMS
,
CMS
and
IOMS
) used in your
target system must have 10 k
pull-up resistors connected
when the EZ-ICE is being used. The pull-up resistors are nec-
essary because there are no internal pull-ups to guarantee their
state during prolonged three-state conditions resulting from
typical EZ-ICE debugging sessions. These resistors may be
removed at your option when the EZ-ICE is not being used.
Target System Interface Signals
When the EZ-ICE board is installed, the performance on some
system signals changes. Design your system to be compatible
with the following system interface signal changes introduced
by the EZ-ICE board:
EZ-ICE emulation introduces an 8 ns propagation delay
between your target circuitry and the DSP on the
RESET
signal.
EZ-ICE emulation introduces an 8 ns propagation delay
between your target circuitry and the DSP on the
BR
signal.
EZ-ICE emulation ignores
RESET
and
BR
when single-
stepping.
EZ-ICE emulation ignores
RESET
and
BR
when in Emula-
tor Space (DSP halted).
EZ-ICE emulation ignores the state of target
BR
in certain
modes. As a result, the target system may take control of the
DSP’s external memory bus
only
if bus grant (
BG
) is asserted
by the EZ-ICE board’s DSP.
Target Architecture File
The EZ-ICE software lets you load your program in its linked
(executable) form. The EZ-ICE PC program can not load
sections of your executable located in boot pages (by the
linker). With the exception of boot page 0 (loaded into PM
RAM), all sections of your executable mapped into boot pages
are not loaded.
Write your target architecture file to indicate that only PM
RAM is available for
program storage
, when using the EZ-ICE
software’s loading feature. Data can be loaded to PM RAM or
DM RAM.
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