参数资料
型号: RM48L950PGET
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 200 MHz, RISC MICROCONTROLLER, PQFP144
封装: GREEN, PLASTIC, LQFP-144
文件页数: 18/154页
文件大小: 2807K
代理商: RM48L950PGET
PRODUCTPREVIEW
tcyc(DMM)
tr
tf
th(DMM)
tl(DMM)
DMMSYNC
DMMCLK
DMMDATA
t
ssu(DMM)
t
sh(DMM)
t
dsu(DMM)
t
dh(DMM)
SPNS174
– SEPTEMBER 2011
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 GIO pins
4.21.9.2 Timing Specifications
Figure 4-27. DMMCLK Timing
Table 4-46. 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
114
System Information and Electrical Specifications
Copyright
2011, Texas Instruments Incorporated
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