tcyc(DMM) t
參數(shù)資料
型號(hào): XRM48L950ZWTT
廠商: Texas Instruments
文件頁數(shù): 23/176頁
文件大小: 0K
描述: MCU 16/32Bit FLASH 3MB 337NFBGA
標(biāo)準(zhǔn)包裝: 1
系列: Hercules™ ARM® RM4x
應(yīng)用: 工業(yè)安全,醫(yī)療
核心處理器: ARM? Cortex? - R4F
程序存儲(chǔ)器類型: 閃存(3MB)
控制器系列: RM4
RAM 容量: 256K x 8
接口: CAN,以太網(wǎng),I²C,LIN,MibSPI,SCI,SPI,USB
輸入/輸出數(shù): 120
電源電壓: 1.14 V ~ 3.6 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 337-LFBGA
包裝: 托盤
供應(yīng)商設(shè)備封裝: 337-NFBGA(16x16)
其它名稱: 296-29390
DMMSYNC
DMMCLK
DMMDATA
t
ssu(DMM)
t
sh(DMM)
t
dsu(DMM)
t
dh(DMM)
tcyc(DMM)
tr
tf
th(DMM)
tl(DMM)
SPNS174A – APRIL 2012 – REVISED SEPTEMBER 2013
4.21.9 Data Modification Module (DMM)
The Data Modification Module (DMM) provides the capability to modify data in the entire 4 GB address
space of the RM4x devices from an external peripheral, with minimal interruption of the application.
4.21.9.1 Features
The DMM module has the following features:
Acts as a bus master, thus enabling direct writes to the 4GB address space without CPU intervention
Writes to memory locations specified in the received packet (leverages packets defined by trace mode
of the RAM trace port (RTP) module
Writes received data to consecutive addresses, which are specified by the DMM module (leverages
packets defined by direct data mode of RTP module)
Configurable port width (1, 2, 4, 8, 16 pins)
Up to 100 Mbit/s pin data rate
Unused pins configurable as GPIO pins
4.21.9.2 Timing Specifications
Figure 4-27. DMMCLK Timing
Table 4-47. DMMCLK Timing
Parameter
MIN
Description
tcyc(DMM)
tc(HCLK) * 2
Clock period
th(DMM)
((tcyc(DMM))/2) - ((tr+tf)/2)
High pulse width
tl(DMM)
((tcyc(DMM))/2) - ((tr+tf)/2)
Low pulse width
Figure 4-28. DMMDATA Timing
Copyright 2012–2013, Texas Instruments Incorporated
System Information and Electrical Specifications
119
Product Folder Links: RM48L950 RM48L750 RM48L550
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