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參數(shù)資料
| 型號： | ADSP-21MOD980N |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | MultiPort Internet Gateway Processor |
| 中文描述： | 通寶互聯(lián)網(wǎng)網(wǎng)關(guān)處理器 |
| 文件頁數(shù)： | 16/42頁 |
| 文件大小： | 566K |
| 代理商： | ADSP-21MOD980N |
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16
6/2001
REV. PrB
For current information contact Analog Devices at (800) ANALOGD
ADSP-21mod980N
PRELIMINARY TECHNICAL DATA
DESIGNING AN EZ-ICE-COMPATIBLE SYSTEM
The ADSP-21mod980N has on-chip emulation support
and an ICE-Port, a special set of pins that interface to the
EZ-ICE. These features allow in-circuit emulation without
replacing the target system processor by using only a 14-pin
connection from the target system to the EZ-ICE. Target
systems must have a 14-pin connector to accept the
EZ-ICE
’
s in-circuit probe, a 14-pin plug.
The EZ-ICE can emulate only one modem processor at a
time. You must include hardware to select which processor
in the ADSP-21mod980N you want to emulate.
Figure on
page 16
is a functional representation of the modem proces-
sor selection hardware. You can use one ICE-Port
connector with two ADSP-21mod980N processors without
using additional buffers.
Issuing the
“
chip reset
”
command during emulation causes
the modem processor to perform a full chip reset, including
a reset of its memory mode. Therefore, it is vital that the
mode pins are set correctly PRIOR to issuing a chip reset
command from the emulator user interface. As the mode
pins share functionality with PF[2:0] on the
Figure 11. Selecting a Modem Processor in the ADSP-21mod980N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
BG
BR
ENT
ELIN
ECLK
EMS
ERESET
GND
EBG
EBR
KEY
ELOUT
EE
RESET
BG6
BR6
RESET6
EE6
BG7
BR7
RESET7
EE7
BG5
BR5
RESET5
EE5
BG4
BR4
RESET4
EE4
BG3
BR3
RESET3
EE3
BG2
BR2
RESET2
EE2
BG1
BR1
RESET1
EE1
BG0
BR0
RESET0
EE0
ELOUT
EBR
EBG
EINT
ELIN
ECLK
EMS
ERESET
ADSP-21M OD980N
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