Intel 386 Manual do Utilizador descarregar pdf (Página 617)

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL

Receive Buffer

Expanded Addr:

Reset State:

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

7–0 RB7:0 Receive Buffer Bits:

These bits make up the last word received. The receiver shifts bits in,

starting with the least-significant-bit. The receiver then strips off the

asynchronous bits (start, parity, and stop) and transfers the received

data bits from the receive shift register to the receive buffer.

NOTE: The receive buffer register shares an address port with other SIO registers. Bit 7 (DLAB) of

must be cleared in order to read the receive buffer register.

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Intel 386 Manual do Utilizador Página 617