American Dynamics PMC-4U-CACI user manual PMC4USCCACNTL

PMC4U_SCC_A_CNTL

[0X18] PMC-4U SCC Channel A Control Register read/write

This address is used to access all of the channel A registers. In order to access a register other than this base register, the register number is first written to this address. A subsequent read or write will read from or write to the desired register. After this process is completed, the pointers are reset so that the base register is once again accessed. See the Z85C30 documentation for more information on this process.

PMC4U_SCC_A_DATA

[0X1C] PMC-4U SCC Channel A Data Register read/write

This address is used to access the channel A data buffers. A write to this address loads a byte into the channel A transmit buffer, a read removes a byte from the receive buffer.

PMC4U_SCC_B_CNTL

[0X20] PMC-4U SCC Channel B Control Register read/write

This address is used to access all of the channel B registers. In order to access a register other than this base register, the register number is first written to this address. A subsequent read or write will read from or write to the desired register. After this process is completed, the pointers are reset so that the base register is once again accessed. See the Z85C30 documentation for more information on this process.

PMC4U_SCC_B_DATA

[0X24] PMC-4U SCC Channel B Data Register read/write

This address is used to access the channel B data buffers. A write to this address loads a byte into the channel B transmit buffer, a read removes a byte from the receive buffer.

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