FIGURE 25. TRANSMIT R
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鍨嬭櫉(h脿o)锛� XR68M752IB49-F
寤犲晢锛� Exar Corporation
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 43/54闋�(y猫)
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC UART FIFO 64B DUAL 49STBGA
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 490
鐗归粸(di菐n)锛� *
閫氶亾鏁�(sh霉)锛� 2锛孌UART
FIFO's锛� 64 瀛楃瘈(ji茅)
瑕�(gu墨)绋嬶細 RS232锛孯S422锛孯S485
闆绘簮闆诲锛� 1.62 V ~ 3.63 V
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甯禝rDA 绶ㄧ⒓鍣�/瑙g⒓鍣細 鏄�
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甯禖MOS锛� 鏄�
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 49-TFBGA
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 49-BGA
鍖呰锛� 鎵樼洡
FIGURE 25. TRANSMIT READY & INTERRUPT TIMING [FIFO MODE, DMA MODE ENABLED] FOR CHANNELS A & B
TX
TXRDY#
IOW#
INT*
D0:D7
S
TXDMA
D0:D7
S
D0:D7
T
D0:D7
S
D0:D7
S
T
D0:D7
S
T
D0:D7
S
T
Start
Bit
Stop
Bit
T
WRI
T
(Unloading)
(Loading data
into FIFO)
Last Data Byte
Transmitted
TX FIFO fills up
to trigger level
TX FIFO drops
below trigger level
At least 1
empty location
in FIFO
T
SRT
TX FIFO
Full
T
WT
T
SI
ISR Read
*INT cleared when the ISR is read or when TX FIFO fills up to trigger level.
IER[1]
enabled
XR16M752/XR68M752
48
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
REV. 1.1.1
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
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