CD1865 Datasheet, PDF (1/150 Pages) Intel Corporation – Intelligent Eight-Channel Communications Controller

CD1865
Intelligent Eight-Channel Communications Controller
Datasheet
Product Features
s Eight full-duplex asynchronous channels
supporting data rates up to 115.2 kbps
Note: To support this data rate, the
specified system clock frequency is
required.
s Register-based interrupt acknowledges
eliminate need for separate interrupt
acknowledge signals
s Automatic prioritizing scheme allows
device to respond to an interrupt
acknowledge with the highest internal
interrupt pending (host-programmable)
s Sophisticated interrupt schemes
— Vectored interrupts
— Fair Share interrupts
— Good Data interrupts for improved
throughput
— Simultaneous interrupt requests for three
classes of interrupts: Rx, Tx, and
modem state changes
s Independent baud-rate generators for each
channel/direction
s Software compatibility with the CD180 and
CD1864 devices
s Generation and detection of special
characters
s Automatic flow control
— In-band (Xon, Xoff generation, and
detection)
— Out-of-band (DTR/DSR or RTS/CTS)
s On-chip FIFO — 8 bytes each for Rx, Tx,
and Status
s Line break detection and generation
s Multiple-chip daisy-chain cascading
feature
s Odd, even, forced, or no parity
s modem/general-purpose I/O signals per
channel
s System clock up to 66 MHz (x2), 33MHz
(x1)
s CMOS technology in 100-pin MQFP
As of May 18, 2001, this document replaces the Basis
Communications Corp. document CL-CD1865 — Intelligent 8-Channel Communications Controller. May 2001