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參數(shù)資料
| 型號(hào)： | 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(gè)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)： | 10/45頁 |
| 文件大?。?/td> | 343K |
| 代理商： | TMPR3922AU |
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TMPR3922AU
Bus Arbitration Pins
NAME
DREQ*
I/O
I
DESCRIPTION
This pin is used to request external arbitration. If the TESTAIU signal is high
and the TESTAIU function has been enabled, then once DGRNT* is asserted,
external logic can initiate reads or writes to the TMPR3922AU registers by
driving the appropriate input signals. If the TESTAIU signal is low or the
TESTAIU function has not been enabled, then the TMPR3922AU memory
transactions are halted and certain memory signals will be tri-stated when
DGRNT* is asserted in order to allow an external master to access memory.
This pin is asserted in response to DREQ* to inform the external test logic or
bus master that it can now begin to drive signals.
DGRNT*
O
*Active-low signal
Clock Pins
NAME
SYSCLKIN
I/O
I
DESCRIPTION
This pin should be connected along with SYSCLKOUT to an external crystal
which is the main TMPR3922AU clock source.
This pin should be connected along with SYSCLKIN to an external crystal
which is the main TMPR3922AU clock source.
This pin along with C32KOUT should be connected to a 32.768 kHz crystal.
This pin along with C32KIN should be connected to a 32.768 kHz crystal.
This pin along with C6MOUT should be connected to a 6 MHz crystal.
This pin along with C6MIN should be connected to a 6 MHz crystal.
This pin is a buffered output of the 48 MHz clock.
This pin is a buffered output of the 32.768 kHz clock.
This pin is a reference clock for the external device.
SYSCLKOUT
O
C32KIN
C32KOUT
C6MIN
C6MOUT
C48MOUT
BC32K
BCLK
I
O
I
O
O
O
O
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