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參數(shù)資料
| 型號： | TMPR3922AU |
| 廠商： | Toshiba Corporation |
| 英文描述： | 32-bit RISC Microprocessor for PDA（Personal Digital Assistants)(32位 精簡指令集系統(tǒng)計(jì)算機(jī)微處理器，用于掌上電腦PDA) |
| 中文描述： | 32位RISC微處理器的PDA（個人數(shù)字助理）（32位精簡指令集系統(tǒng)計(jì)算機(jī)微處理器，用于掌上電腦PDA）的 |
| 文件頁數(shù)： | 26/45頁 |
| 文件大?。?/td> | 343K |
| 代理商： | TMPR3922AU |
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TMPR3922AU
5.3.3 BUS INTERFACE UNIT (BIU) MODULE
The TMPR3922AU has a Bus Interface Unit with the following features.
supports 2 Banks of SDRAM and/or DRAM(EDO)
16-bit or 32-bit SDRAM configuration
16-bit or 32-bit DRAM(EDO) configuration
4 Mbit, 16 Mbit and 64 Mbit parts supported
page mode reads and writes supported
independent refresh counters for each bank
self refreshing parts supported to retain memory when system is powered down
4 general purpose chip selects (CS3*-CS0*)
16-bit or 32-bit ports
programmable wait states
read page mode
2 general purpose chip selects (MCS1*- MCS0*)
16-bit or 32-bit ports
programmable wait states
read page mode
WAIT signal supported
2 full PCMCIA slots
8-bit or 16-bit ports
IORD and IOWR provided to support I/O cards
WAIT signal supported
5.3.4 SYSTEM INTERFACE UNIT (SIU) MODULE
The TMPR3922AU has a System Interface Unit with the following features.
multi-channel 32-bit DMA controller
independent DMA controller for SIB to/from TC35143F audio/telecom codecs, high-speed serial
port, IRDA, UART, and general purpose UART
address decoding for the internal registers
5.3.5 CLOCK MODULE
The TMPR3922AU has a Clock module with the following features.
The TMPR3922AU supports system-wide single crystal configuration, besides the 32 kHz RTC
X’tal (reduces cost, power, and board space)
common crystal rate divided to generate clock for CPU, sound, telecom, UARTs, etc.
independent enabling or disabling of individual clocks under software control, for power
management
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