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Z8018233FSC Datasheet(PDF) 55 Page - Zilog, Inc. |
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Z8018233FSC Datasheet(HTML) 55 Page - Zilog, Inc. |
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55 / 109 page ![]() 3-55 Z80182/Z8L182 ZILOG INTELLIGENT PERIPHERAL PRELIMINARY Zilog DS971820600 D7 D6 D5 D4 D3 D2 D1 D0 0 Read Register 3 0 0 Ext/Status IP Tx IP Rx IP 0 0 D7 D6 D5 D4 D3 D2 D1 D0 Rx Character Available Read Register 0 Zero Count Tx Buffer Empty DCD Sync/Hunt CTS Tx Underrun/EOM Break/Abort D7 D6 D5 D4 D3 D2 D1 D0 All Sent Read Register 1 Residue Code 2 Residue Code 1 Residue Code 0 Parity Error Rx Overrun Error CRC/Framing Error End of Frame (SDLC) D7 D6 D5 D4 D3 D2 D1 D0 BC0 Read Register 6* BC1 BC2 BC3 BC4 BC5 BC6 BC7 *Can only be accessed if the SDLC FIFO enhancement is enabled (WR15 bit D2 set to 1) SDLC FIFO Status and Byte Count (LSB) D7 D6 D5 D4 D3 D2 D1 D0 V0 Read Register 2 V1 V2 V3 V4 V5 V6 V7 Interrupt Vector D7 D6 D5 D4 D3 D2 D1 D0 BC8 Read Register 7* BC9 BC10 BC11 BC12 BC13 FDA: FIFO Data Available 1 = Status Reads from FIFO 0 = Status Reads from EMSCC *Can only be accessed if the SDLC FIFO enhancement is enabled (WR15 bit D2 set to 1) SDLC FIFO Status and Byte Count (LSB) FOS: FIFO Overflow Status 1 = FIFO Overflowed 0 = Normal Figure 52. Write Register Bit Functions (Continued) |
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