ST16C552 Exar Corporation, ST16C552 Datasheet - Page 2

• Manufacturer Part Number: ST16C552
• Description: DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT
• Manufacturer: Exar Corporation

ST16C552/552A
Figure 1, Block Diagram
-RESET
INT A,B
-RXRDY
-TXRDY
BIDEN
D0-D7
Rev. 3.40
A0-A2
-IOW
-IOR
-CSA
-CSB
-CSP
INTP
Baud Rate
Generator
Transmit
Registers
Registers
Receive
2
FIFO
FIFO
Clock
&
Transmit
Register
Register
Receive
Printer
Ports
Shift
Shift
Data
Control
Control
Modem
Printer
Logic
Logic
PD0-PD7
PE, SELECT
-BUSY, -ACK
ERROR
-STROBE
INIT
-AUTOFDX
-SELCTIN
-CTS A,B
-RI A,B
-CD A,B
-DSR A,B
TX A,B
RX A,B
-DTR A,B
-RTS A,B