參數(shù)資料
型號: TMPR3907F
廠商: Toshiba Corporation
英文描述: 32 Bit TX39 Family System RISC Microprocessor(32位TX39系列簡化指令系統(tǒng)計(jì)算機(jī)微處理器)
中文描述: 32位TX39家庭系統(tǒng)RISC微處理器(32位TX39系列簡化指令系統(tǒng)計(jì)算機(jī)微處理器)
文件頁數(shù): 6/30頁
文件大?。?/td> 246K
代理商: TMPR3907F
1998-07-01 6/29
TMPR3907F
TENTATIVE
Clock signals
XIN
I
Crystal input
Connect a crystal oscillator to this pin. The TX39/H core operates at eight times the
crystal oscillator.
XOUT
O
Crystal output
Connect a crystal oscillator to this pin.
PLLOFF*
I
PLL off
Used to halt oscillation of the PLL of the TX3907 built-in clock generator.
Interrupt signals
NMI*
I
Non-maskable interrupt
The non-maskable interrupt signal.
INT[2:0]
I
Interrupt request
External interrupt request signal.
Memory interface signals
DRAMA[12:0]
O
DRAM address
DRAM address signal.
RAS2[1:0]*
RAS1[1:0]*
RAS0[1:0]*
O
RAS
DRAM RAS signal.
WE*
O
Write enable
DRAM write enable signal.
ROMA[23:9]
I/O
ROMA[8:2]
O
ROM address
ROM and SCS addresses. ROMA[23:9] is loaded to the TX3907 on the RESET* signal
rising edge and is used for the TX3907 initial settings.
SPA [1:0]
O
Special address
Signal for the ROM lower address. Used in 16-bit Bus mode and for interleaving.
CE[4:3]*/
SCS[1:0]*
O
Chip enable/system chip select
In Full-Speed Bus mode, functions as the chip select signal for ROM channels 3 and 4.
In Half-Speed Bus mode, functions as the chip select signal for SCS channels 0 and 1.
CE[2:0]*
O
Chip enable
Chip select signal for ROM channels 0, 1, and 2.
OE*
O
Output enable
ROM output enable signal.
SWE*
O
SRAM write enable
SRAM/flash ROM write enable signal.
LEAFA* LEAFB*
O
LEAF
Used to switch the data bus between odd and even when ROM is in Interleave mode.
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