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RM48L540 Datasheet(PDF) 108 Page - Texas Instruments |
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RM48L540 Datasheet(HTML) 108 Page - Texas Instruments |
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108 / 152 page  tcyc(RTP) tr tf th(RTP) tl(RTP) RM48L940 RM48L740 RM48L540 SPNS175 – SEPTEMBER 2011 www.ti.com 4.21.8 RAM Trace Port (RTP) The RTP provides the ability to datalog the RAM contents of the RM4x devices or accesses to peripherals without program intrusion. It can trace all data write or read accesses to internal RAM. In addition, it provides the capability to directly transfer data to a FIFO to support a CPU-controlled transmission of the data. The trace data is transmitted over a dedicated external interface. 4.21.8.1 Features The RTP offers the following features: • Two modes of operation - Trace Mode and Direct Data Mode – Trace Mode • Non-intrusive data trace on write or read operation • Visibility of RAM content at any time on external capture hardware • Trace of peripheral accesses • 2 configurable trace regions for each RAM module to limit amount of data to be traced • FIFO to store data and address of data of multiple read/write operations • Trace of CPU and/or DMA accesses with indication of the master in the transmitted data packet – Direct Data Mode • Directly write data with the CPU or trace read operations to a FIFO, without transmitting header and address information • Dedicated synchronous interface to transmit data to external devices • Free-running clock generation or clock stop mode between transmissions • Up to 100 Mbit per sec/pin transfer rate for transmitting data • Pins not used in functional mode can be used as GIOs 4.21.8.2 Timing Specifications Figure 4-24. RTPCLK Timing Table 4-43. RTPCLK Timing Parameter MIN Description tcyc(RTP) tc(HCLK) * 2 Clock period, prescaled from HCLK; must not be faster than HCLK / 2 th(RTP) ((tcyc(RTP))/2) - ((tr+tf)/2) High pulse width tl(RTP) ((tcyc(RTP))/2) - ((tr+tf)/2) Low pulse width 108 System Information and Electrical Specifications Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback focus.ti.com: RM48L940 RM48L740 RM48L540 |
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