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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC16C652 датащи(PDF) 14 Page - NXP Semiconductors |
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SC16C652 датащи(HTML) 14 Page - NXP Semiconductors |
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14 / 41 page  Philips Semiconductors SC16C652 Dual UART with 32 bytes of transmit and receive FIFOs Product data Rev. 04 — 20 June 2003 14 of 41 9397 750 11634 © Koninklijke Philips Electronics N.V. 2003. All rights reserved. 7. Register descriptions Table 9 details the assigned bit functions for the SC16C652 internal registers. The assigned bit functions are more fully defined in Section 7.1 through Section 7.11. [1] The value shown in represents the register’s initialized HEX value; X = n/a. [2] Accessible only when LCR[7] is logic 0. [3] Baud rate registers accessible only when LCR[7] is logic 1. [4] Enhanced Feature Register, Xon-1,2 and Xoff-1,2 are accessible only when LCR is set to ‘BFHex’. Table 9: SC16C652 internal registers Shaded bits are only accessible when EFR[4] is set. A2 A1 A0 Register Default[1] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 General Register Set[2] 0 0 0 RHR XX bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 0 0 THR XX bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 0 1 IER 00 CTS interrupt RTS interrupt Xoff interrupt Sleep mode modem status interrupt Rx receive line status interrupt transmit holding register interrupt receive holding register 0 1 0 FCR 00 RCVR trigger (MSB) RCVR trigger (LSB) TX trigger (MSB) TX trigger (LSB) DMA mode select XMIT FIFO reset RCVR FIFO reset FIFOs enable 0 1 0 ISR 01 FIFOs enabled FIFOs enabled INT priority bit 4 INT priority bit 3 INT priority bit 2 INT priority bit 1 INT priority bit 0 INT status 0 1 1 LCR 00 divisor latch enable set break set parity even parity parity enable stop bits word length bit 1 word length bit 0 1 0 0 MCR 00 clock select 0 0 loop back OP2/INT enable (OP1) RTS DTR 1 0 1 LSR 60 FIFO data error THR and TSR empty THR empty break interrupt framing error parity error overrun error receive data ready 1 1 0 MSR X0 CD RI DSR CTS ∆CD ∆RI ∆DSR ∆CTS 1 1 1 SPR FF bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 Special Register Set[3] 0 0 0 DLL XX bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 0 1 DLM XX bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 Enhanced Register Set[4] 0 1 0 EFR 00 Auto CTS Auto RTS Special char. select Enable IER[4-7], ISR[4,5], FCR[4,5], MCR[5-7] Cont-3 Tx, Rx Control Cont-2 Tx, Rx Control Cont-1 Tx, Rx Control Cont-0 Tx, Rx Control 1 0 0 Xon-1 00 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 1 0 1 Xon-2 00 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 1 1 0 Xoff-1 00 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 1 1 1 Xoff-2 00 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 |
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