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Z80 Datasheet(PDF) 229 Page - Zilog, Inc. |
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Z80 Datasheet(HTML) 229 Page - Zilog, Inc. |
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229 / 330 page  Z80 CPU Peripherals User Manual UM008101-0601 Serial Input/Output 209 • CRC generation and checking • Separate Modem Control Inputs and Outputs for Both Channels • CRC-16 or CRC-CCITT Block Check • Daisy-Chain Priority Interrupt Logic Provides Automatic Interrupt Vectoring Without External Logic • Modem Status can be Monitored Figure 100. Z80 SIO Block Diagram CPU Bus I/O +5V GND Φ Data Control International Control Logic Channel A Read/Write Registers Channel B Read/Write Registers International Control Logic 8 6 Interrupt Control Lines Channel B Discrete Control and Status (Channel A) Channel A Modem or other Serial Data Channel Clocks Discrete Control and Status (Channel B) SYNC Wait/Ready Controls Modem or other Controls Serial Data Channel Clocks SYNC Wait/Ready |
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