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參數資料
型號: ADSP-2196MKCA-160X
廠商: ANALOG DEVICES INC
元件分類: 數字信號處理
英文描述: DSP Microcomputer
中文描述: 16-BIT, 160 MHz, OTHER DSP, PBGA144
封裝: MINI, BGA-144
文件頁數: 28/68頁
文件大小: 897K
代理商: ADSP-2196MKCA-160X
For current information contact Analog Devices at 800/262-5643
ADSP-2196
September 2001
This information applies to a product under development. Its characteristics and specifications are subject to change with-
out notice. Analog Devices assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
28
REV. PrA
External Port Write Cycle Timing
Table 11
and
Figure 14
describe external port write operations.
The external port lets systems extend read/write accesses in three ways: waitstates, ACK input, and combined waitstates
and ACK. To add waits with ACK, the DSP must see ACK low at the rising edge of EMI clock. ACK low causes the DSP
to wait, and the DSP requires two EMI clock cycles after ACK goes high to finish the access. For more information, see
the External Port chapter in the
ADSP-219x/2191 DSP Hardware Reference
Table 11. External Port Write Cycle Timing
Parameter
Description
1, 2, 3
1
t
HCLK
is the peripheral clock period.
2
These are preliminary timing parameters that are based on worst-case operating conditions.
3
The pad loads for these timing parameters are 20 pF.
4
EMI clock is the external port clock that is generated from the EMI clock ratio. This signal is not available on an external pin, but (roughly) corresponds
to HCLK (at similar clock ratios).
Min
Max
Unit
Switching Characteristics
t
CWA
EMI
4
clock low to WR asserted delay
2.8
ns
t
CSWS
Chip select asserted to WR de-asserted delay
4.3
6.5
ns
t
AWS
Address valid to WR setup and delay
4.9
7.0
ns
t
AKS
ACK asserted to EMI clock high delay
6.0
ns
t
WSCS
WR de-asserted to chip select de-asserted
4.8
7.0
ns
t
WSA
WR de-asserted to address invalid
4.5
6.6
ns
t
CWD
EMI clock low to WR de-asserted delay
2.5
2.7
ns
t
WW
WR strobe pulsewidth
t
HCLK
–0.5
ns
t
CDA
WR to data enable access delay
1.5
4.1
ns
t
CDD
WR to data disable access delay
3.3
7.4
ns
t
DSW
Data valid to WR de-asserted setup
t
HCLK
–1.4
t
HCLK
+4.8
ns
t
DHW
WR de-asserted to data invalid hold time; wt_hold=0
3.4
7.4
ns
t
DHW
WR de-asserted to data invalid hold time; wt_hold=1
t
HCLK
+3.4
t
HCLK
+7.4
ns
Timing Requirement
t
AKW
ACK strobe pulsewidth
10.0
ns
相關PDF資料
PDF描述
ADSP-2196MKST-160X DSP Microcomputer
ADSP-21990 16-bit fixed point DSP with Flash
ADSP-21990BBC 16-bit fixed point DSP with Flash
ADSP-21990BST 16-bit fixed point DSP with Flash
ADSP-21MOD870-100 Single Chip Digital Modem(單片數字調制解調器)
相關代理商/技術參數
參數描述
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ADSP-21990BSTZ 功能描述:IC DSP CONTROLLER 16BIT 176-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP(數字式信號處理器) 系列:ADSP-21xx 標準包裝:2 系列:StarCore 類型:SC140 內核 接口:DSI,以太網,RS-232 時鐘速率:400MHz 非易失內存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA,FCBGA 供應商設備封裝:431-FCPBGA(20x20) 包裝:托盤
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