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W83977EF-AW Datasheet(PDF) 17 Page - Winbond |
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W83977EF-AW Datasheet(HTML) 17 Page - Winbond |
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17 / 142 page  W83977EF-AW/W83977EG-AW Publication Release Date: Apr. 2006 -15- Revision 1.2 Multi-Mode Parallel Port, continued SYMBOL PIN I/O FUNCTION STB# 36 OD12 PRINTER MODE: STB# An active low output is used to latch the parallel data into the printer. This pin is pulled high internally. Refer to description of the parallel port for definition of this pin in ECP and EPP mode. - EXTENSION FDD MODE: This pin is a tri-state output. - EXTENSION 2FDD MODE: This pin is a tri-state output. PD0 31 I/O24t PRINTER MODE: PD0 Parallel port data bus bit 0. Refer to description of the parallel port for definition of this pin in ECP and EPP mode. INt EXTENSION FDD MODE: INDEX2# This pin is for Extension FDD B; the function of this pin is the same as the INDEX# pin of FDC. It is pulled high internally. INt EXTENSION 2FDD MODE: INDEX2# This pin is for Extension FDD A and B; the function of this pin is the same as the INDEX# pin of FDC. It is pulled high internally. PD1 30 I/O24t INt INt PRINTER MODE: PD1 Parallel port data bus bit 1. Refer to description of the parallel port for definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: TRAK02# This pin is for Extension FDD B; the function of this pin is the same as the TRAK0# pin of FDC. It is pulled high internally. EXTENSION. 2FDD MODE: TRAK02# This pin is for Extension FDD A and B; the function of this pin is the same as the TRAK0# pin of FDC. It is pulled high internally. PD2 29 I/O24t INt INt PRINTER MODE: PD2 Parallel port data bus bit 2. Refer to description of the parallel port for definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: WP2# This pin is for Extension FDD B; the function of this pin is the same as the WP# pin of FDC. It is pulled high internally. EXTENSION. 2FDD MODE: WP2# This pin is for Extension FDD A and B; the function of this pin is the same as the WP# pin of FDC. It is pulled high internally. PD3 28 I/O24t INt INt PRINTER MODE: PD3 Parallel port data bus bit 3. Refer to description of the parallel port for definition of this pin in ECP and EPP mode. EXTENSION FDD MODE: RDATA2# This pin is for Extension FDD B; the function of this pin is the same as the RDATA# pin of FDC. It is pulled high internally. EXTENSION 2FDD MODE: RDATA2# This pin is for Extension FDD A and B; this function of this pin is the same as the RDATA# pin of FDC. It is pulled high internally. |
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