Datenblatt-Suchmaschine für elektronische Bauteile |
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ST78C34IJ44 Datenblatt(PDF) 9 Page - Exar Corporation |
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ST78C34IJ44 Datenblatt(HTML) 9 Page - Exar Corporation |
9 / 21 page 6-11 ST78C34 Rev. 3.00 Bit-5 Bit-4 INT output STR STR bit-0 bit-6 0 0 Normal mode 1 -ACK 0 1 FIFO empty 1 FIFO empty 1 0 FIFO full 1 FIFO full 1 1 FIFO empty 0 FIFO empty AFR BIT-6: INT output polarity. 0= Normal. INT output follows the -ACK input 1= Inverted INT output AFR BIT-7: FIFO enable / disable function. 0= FIFO is disabled( default mode). 1= FIFO is enabled. Internal 83 byte of FIFO is enabled. FIFO BYTE COUNT REGISTER (FBCR) State and content of the printer FIFO can be moni- tored by reading this register. FCBR BIT 0-6: FIFO byte count. Number of characters left in FIFO. FCRB bit-0 is the LSB bit of the counter and FCRB bit- 6 is the MSB bit of the counter. FBCR BIT-7: FIFO state. 0= FIFO is enabled 1= FIFO is disabled ST78C34 EXTERNAL RESET CONDITION SIGNALS RESET STATE PD0-PD7 Unknown, output mode -STROBE High -AUTOFDXT High INIT Low -SLCTIN High |
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