收藏本站
Figure 13: Ultra DMA Data-In Burst Device Termination Timing
Notes: The definitions for the STOP, HDMARDY, and DSTROBE signal lines are no longer in effect after DMARQ and
DMACK are negated.
6.5.4.4.5 Host Terminating an Ultra DMA Data-In Burst
The host terminates an Ultra DMA Data-In burst by following the steps lettered below. The timing
diagram is shown in Figure 14: Ultra DMA Data-In Burst Host Termination Timing. The timing
parameters are specified in Table 26: Ultra DMA Data Burst Timing Requirements and are
described in Table 27: Ultra DMA Data Burst Timing Descriptions.
The following steps shall occur in the order they are listed unless otherwise specifically allowed:
a) The host shall not initiate Ultra DMA burst termination until at least one data word of an Ultra DMA burst
has been transferred.
b) The host shall initiate Ultra DMA burst termination by negating – HDMARDY. The host shall continue to
negate – HDMARDY until the Ultra DMA burst is terminated.
c) The device shall stop generating DSTROBE edges within t RFS of the host negating – HDMARDY
d) If the host negates – HDMARDY within t SR after the device has generated a DSTROBE edge, then the host
shall be prepared to receive zero or one additional data words. If the host negates HDMARDYgreater than
t SR after the device has generated a DSTROBE edge, then the host shall be prepared to receive zero, one or
two additional data words. The additional data words are a result of cable round trip delay and t RFS
timing for the device.
e) The host shall assert STOP no sooner than t RP after negating – HDMARDY. The host shall not negate STOP
again until after the Ultra DMA burst is terminated.
f)
The device shall negate DMARQ within t LI after the host has asserted STOP. The device shall not assert
DMARQ again until after the Ultra DMA burst is terminated.
g) If DSTROBE is negated, the device shall assert DSTROBE within t LI after the host has asserted STOP. No data
shall be transferred during this assertion. The host shall ignore this transition on DSTROBE. DSTROBE shall
remain asserted until the Ultra DMA burst is terminated.
h) The device shall release D[15:00] no later than t AZ after negating DMARQ.
i) The host shall drive DD D[15:00] no sooner than t ZAH after the device has negated DMARQ. For this step, the
host may first drive D[15:00] with the result of its CRC calculation (see 6.5.4.5 ).
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.51
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-300_data_sheet_CF-HxBK_Rev151.doc
Page 37 of 99
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SFCF64GBH2BU4TO-I-NU-517-STD FLASH SLC UDMA/MDMA/PIO 64GB
SFN08B4702CBQLF7 RES ARRAY 47K OHM 7 RES 8-DFN
SFP1050-12BG FRONT END AC/DC 1050W 12V
SFP450-12BG PWR SUP 450W 12V 36.6A W/STANDBY
SFSD1024N1BN1TO-I-DF-151-STD FLASH MICRO SD CARD IND S-200 1G
SFSD2048L1BN2TO-I-DF-151-STD FLASH SECURE DGTL CARD SD 2G
SFSD4096L1BN2TO-I-Q2-141-STD FLASH SECURE DGTL CARD SDHC 4G
SFSD8192N1BW1MT-E-QG-111-STD FLASH MICRO SD 8GB EXT TEMP
相关代理商/技术参数
SFCF64GBH2BU4TO-C-NU-527-STD 制造商:SWISSBIT 功能描述:CFC C-440 DENSITY COMMERCIAL - Trays 制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF64GBH2BU4TO-I-NU-517-STD 功能描述:FLASH SLC UDMA/MDMA/PIO 64GB RoHS:是 类别:存储卡，模块 >> 存储器，PC 卡 系列:C-440 标准包装:30 系列:- 存储容量:8GB 存储器类型:存储卡 - Extreme III SD?
SFCF64GBH2BU4TO-I-NU-527-STD 制造商:SWISSBIT 功能描述:CFC C-440 DENSITY INDUSTRIAL - Trays 制造商:SWISSBIT NA INC 功能描述:FLASH CARD 64GB IND C-440 制造商:Swissbit 功能描述:Memory Cards 64GB IND COMPACT FLASH SLC NAND C440
SFCF8192H1BO2TO-C-Q1-523-SMA 制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF8192H1BO2TO-C-Q1-533-ZP1 制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF8192H1BO2TO-C-Q1-543-SMA 制造商:SWISSBIT NA INC 功能描述:FLASH
SFCF8192H1BO2TOIQ1523SMA 制造商:Swissbit 功能描述:Flash Card 8G-Byte 3.3V/5V CompactFlash 50-Pin
SFCF8192H1BO2TO-I-Q1-523-SMA 功能描述:FLASH SLC UDMA/MDMA/PIO 8G RoHS:是 类别:存储卡，模块 >> 存储器，PC 卡 系列:C-320 标准包装:30 系列:- 存储容量:8GB 存储器类型:存储卡 - Extreme III SD?