ACT apricot - Channel a Connections

SERIAL INTERFACE
B/A Channel B/Channel A select. Address input. A
logic
low on B/A with CE also set low indicates
that the data/command transfer operation
involves channel A. A logic high on B/A with
CE set low indicates that the data/command
transfer operation involves channel B.
C/D Control/Data select. Address input. A logic low
on C/D with CE also set low indicates that the
informat~on on the data bus is interpreted as
data. A logic
high on C/D with CE set low
indicates that the information on the data bus
is interpreted as commands.
CLK System clock input. 2.5 MHz clock with a 50%
duty cycle for internal timing within the SIO.
RESET System reset. Input, active low. When active,
disables
the receive and transmit sections of
both channels and sets the transmit lines to the
marking condition, requiring the registers
within the SIO to be re-initialized before
performing data transfer operations.
INT Interrupt request. Output, active low. Set
active when an interrupt condition is detected
internally within the SIO.
Channel A Connections
TxDA Transmit Data. Serial data output to the
RS232C interface via a line driver. A mark is
indicated by logic high on TxDA and a space,
by logic low.
RxDA Receive
Data. Serial data input from the
RS232C interface via a line receiver. A mark is
indicated by a logic high and a space, by logic
low.
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