參數(shù)資料
型號(hào)： ADSP-21mod970
廠商： Analog Devices, Inc.
英文描述： Multi-Port Internet Gateway Processor(多口網(wǎng)關(guān)處理器)
中文描述： 多端口Internet網(wǎng)關(guān)處理器（多口網(wǎng)關(guān)處理器）
文件頁數(shù)： 6/50頁
文件大?。?/td> 980K
代理商： ADSP-21MOD970
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ADSP-21mod970 Preliminary Data Sheet
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Preimnary
6
Technca
section). The slave mode is considered to be the normal mode of operation in a modem pool application.
Figure 3 shows the modem pool configured for slave mode operation.
Figure 3 ADSP-21mod970 Configured for Slave Mode
The master mode of the ADSP-21mod970 configures five of the modem processors with identical
functions and isolates one of the modem processors, processor 1. In the master mode, processor 1 is not
connected to the DMA bus as is the other five modem processors. Processor 1 operates in a different
mode where external pins can be used for access to a 16-bit data bus, a 14-bit address bus with associated
bus control pins. In master mode, processor 1 is treated as a master of the modem pool and communicates
with an external device such as a RAM, ROM or a memory shared with a host processor. In this
configuration, the master processor performs some controlling function of the remaining five modem
processors. Figure 4 shows the modem pool configured for slave mode operation.
Figure 4 ADSP-21mod970 Configured for Master Mode
Since the memory bus of processor 1 is accessible via external pins in master mode, processor 1 can be
configured for one of the several memory modes available on the ADSP-21xx family. (See full memory,
host mode descriptions).
MODEM
PROCESSOR
1
MODEM
PROCESSOR
2
MODEM
PROCESSOR
3
MODEM
PROCESSOR
4
MODEM
PROCESSOR
5
MODEM
PROCESSOR
6
ICE BUS
SPORT0a BUS
SPORT0b BUS
SPORT0a
SPORT0b
ICE
4
4
14
25
16
IDMA
DATA BUS
CLKIN
IDMA
DATA & CONTROL
BUS
CLKIN
21
24
SPORT0 ICE
SPORT0
SPORT0
SPORT0
SPORT0
SPORT0
ICE
ICE
ICE
ICE
ICE
IDMA
IDMA
IDMA
IDMA
IDMA
IDMA
D&CB
D&CB
D&CB
D&CB
D&CB
D&CB
MODE A
MODE B
MODE C
MODE D
HIGH/1
LOW/0
HIGH/1
HIGH/1
X5
MODE A
MODE B
MODE C
MODE D
HIGH/1
LOW/0
HIGH/1
HIGH/1
ADSP-21mod970 (PATRIOT MULTI-CHIP MODULE)
6
6
6
6
6
42
FLAGS
RESETb
BRb
BGb
BGHb
CLKOUT
MODEM
PROCESSOR
1
(MASTER)
MODEM
PROCESSOR
2
(SLAVE)
MODEM
PROCESSOR
3
(SLAVE)
MODEM
PROCESSOR
4
(SLAVE)
MODEM
PROCESSOR
5
(SLAVE)
MODEM
PROCESSOR
6
(SLAVE)
ICE BUS
SPORT0a BUS
SPORT0b BUS
SPORT0a
SPORT0b
ICE
4
4
14
25
16
IDMA
DATA BUS
CLKIN
CONTROL
ADDRESS
DATA
7
14
SPORT0 ICE
SPORT0
SPORT0
SPORT0
SPORT0
SPORT0
ICE
ICE
ICE
ICE
ICE
CNTL
IDMA
IDMA
IDMA
IDMA
IDMA
ADDR
D&CB
D&CB
D&CB
D&CB
D&CB
MODE A
MODE B
MODE C
MODE D
HIGH/1
LOW/0
HIGH/1
HIGH/1
X5
MODE A
MODE B
MODE C
MODE D
LOW/0
LOW/0
LOW/0
LOW/0
ADSP-21mod970 (PATRIOT MULTI-CHIP MODULE)
6
6
6
6
42
FLAGS
RESETb
BRb
BGb
BGHb
CLKOUT
SLAVE IDMA
SLAVE D&CB
SLAVE CLKIN
24
DATA
CLKIN
MASTER
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