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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST16C654DCQ64 датащи(PDF) 10 Page - Exar Corporation |
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ST16C654DCQ64 датащи(HTML) 10 Page - Exar Corporation |
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10 / 51 page  ST16C654/654D 2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO REV. 5.0.0 10 2.2 Device Reset The RESET input resets the internal registers and the serial interface outputs in both channels to their default state (see Table 16). An active high pulse of longer than 40 ns duration will be required to activate the reset function in the device. Following a power-on reset or an external reset, the 654 is software compatible with previous generation of UARTs, 16C454 and 16C554. 2.3 Channel Selection 7KH 8$57 SURYLGHV WKH XVH U ZLWK WKH FDSDELOLW\ WR ELGLUHFWLRQDOO\ WUDQVIH U LQIRUPDWLRQ EH WZH H Q DQ H[WHUQDO &38 DQG DQ H[WHUQDO VHULDO FRPPXQLFDWLRQ GHYLFH 'XULQJ ,QWHO %XV 0RGH SLQ LV FRQQHFWHG WR 9&& D ORJLF RQFKLS VHOHFW SLQV &6$ &6% &6& RU &6' DOORZV WKH XVHU WR VHOHFW 8$57 FKDQQHO $ % & RU ' WR FRQILJXUH VHQG WUDQVPLW GDWD DQGRU XQORDG UHFHLYH GDWD WRIURP WKH 8$57 6HOHFWLQJ DOO IRXU 8$57V FDQ EH XVHIXO GXULQJ SRZHU XS LQLWLDOL]DWLRQ WR ZULWH WR WKH VDPH LQWHUQDO UHJLVWHUV EXW GR QRW DWWHPSW WR UHDG IURP DOO IRXU XDUWV VLPXOWDQHRXVO\ ,QGLYLGXDO FKDQQHO VHOHFW IXQFWLRQV DUH VKRZQ LQ 7DEOH During Motorola Bus Mode (16/68# pin is connected to GND), the package interface pins are configured for connection with Motorola, and other popular microprocessor bus types. In this mode the 654 decodes two additional addresses, A3 and A4, to select one of the four UART ports. The A3 and A4 address decode function is used only when in the Motorola Bus Mode. See Table 2. TABLE 1: CHANNEL A-D SELECT IN 16 MODE CSA # CSB # CSC # CSD # FUNCTION 1 1 1 1 UART de-selected 0 1 1 1 Channel A selected 1 0 1 1 Channel B selected 1 1 0 1 Channel C selected 1 1 1 0 Channel D selected 0 0 0 0 Channels A-D selected TABLE 2: CHANNEL A-D SELECT IN 68 MODE CS# A4 A3 FUNCTION 1 N/A N/A UART de-selected 0 0 0 Channel A selected 0 0 1 Channel B selected 0 1 0 Channel C selected 0 1 1 Channel D selected |
Аналогичный номер детали - ST16C654DCQ64 |
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Аналогичное описание - ST16C654DCQ64 |
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