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DA14582 Datasheet(PDF) 44 Page - Dialog Semiconductor |
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DA14582 Datasheet(HTML) 44 Page - Dialog Semiconductor |
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44 / 172 page  Datasheet Revision 3.0 08-Nov-2016 CFR0011-120-01 44 of 172 © 2015 Dialog Semiconductor DA14582 Bluetooth Low Energy 4.2 SoC with Audio CODEC FINAL 7 r UART_DCD Data Carrier Detect. This is used to indicate the current state of the modem con- trol line dcd_n. This bit is the complement of dcd_n. When the Data Carrier Detect input (dcd_n) is asserted it is an indi- cation that the carrier has been detected by the modem or data set. 0 = dcd_n input is de-asserted (logic 1) 1 = dcd_n input is asserted (logic 0) In Loopback Mode (MCR[4] set to one), DCD is the same as MCR[3] (Out2). 0x0 6 r UART_R1 Ring Indicator. This is used to indicate the current state of the modem con- trol line ri_n. This bit is the complement of ri_n. When the Ring Indicator input (ri_n) is asserted it is an indication that a telephone ringing signal has been received by the modem or data set. 0 = ri_n input is de-asserted (logic 1) 1 = ri_n input is asserted (logic 0) In Loopback Mode (MCR[4] set to one), RI is the same as MCR[2] (Out1). 0x0 5 - - Reserved 0x0 4 r UART_CTS Clear to Send. This is used to indicate the current state of the modem con- trol line cts_n. This bit is the complement of cts_n. When the Clear to Send input (cts_n) is asserted it is an indication that the modem or data set is ready to exchange data with the UART Ctrl. 0 = cts_n input is de-asserted (logic 1) 1 = cts_n input is asserted (logic 0) In Loopback Mode (MCR[4] = 1), CTS is the same as MCR[1] (RTS). 0x0 3 r UART_DDCD Delta Data Carrier Detect. This is used to indicate that the modem control line dcd_n has changed since the last time the MSR was read. 0 = no change on dcd_n since last read of MSR 1 = change on dcd_n since last read of MSR Reading the MSR clears the DDCD bit. In Loopback Mode (MCR[4] = 1), DDCD reflects changes on MCR[3] (Out2). Note, if the DDCD bit is not set and the dcd_n signal is asserted (low) and a reset occurs (software or otherwise), then the DDCD bit is set when the reset is removed if the dcd_n signal remains asserted. 0x0 2 r UART_TERI Trailing Edge of Ring Indicator. This is used to indicate that a change on the input ri_n (from an active-low to an inactive-high state) has occurred since the last time the MSR was read. 0 = no change on ri_n since last read of MSR 1 = change on ri_n since last read of MSR Reading the MSR clears the TERI bit. In Loopback Mode (MCR[4] = 1), TERI reflects when MCR[2] (Out1) has changed state from a high to a low. 0x0 1 - - Reserved 0x0 Table 50: UART_MSR_REG (0x50001018) Bit Mode Symbol Description Reset |
Similar Part No. - DA14582_16 |
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Similar Description - DA14582_16 |
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