參數(shù)資料
型號: ST16C552IJ68
廠商: STARTECH SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: DUAL UART WITH 16-BYTE FIFO AND PARALLEL PRINTER PORT
中文描述: 2 CHANNEL(S), SERIAL COMM CONTROLLER, PQCC68
文件頁數(shù): 10/39頁
文件大?。?/td> 222K
代理商: ST16C552IJ68
10
ST16C552/552A
Rev. 3.40
Table 4, INTERNAL REGISTER DECODE
A2
A1
A0
READ MODE
WRITE MODE
General Register Set (THR/RHR, IER/ISR, MCR/MSR, LCR/LSR, SPR): Note 1*
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Receive Holding Register
Transmit Holding Register
Interrupt Enable Register
FIFO Control Register
Line Control Register
Modem Control Register
Interrupt Status Register
Line Status Register
Modem Status Register
Scratchpad Register
Scratchpad Register
Baud Rate Register Set (DLL/DLM): Note *2
0
0
0
0
0
1
LSB of Divisor Latch
MSB of Divisor Latch
LSB of Divisor Latch
MSB of Divisor Latch
Printer Port Set (PR/SR/IOSEL/COM/CON): Note *3
X
X
X
0
0
1
0
1
0
PORT REGISTER
STATUS REGISTER
COMMAND REGISTER
PORT REGISTER
I/O SELECT REGISTER
CONTROL REGISTER
Note 1* The General Register set is accessible only when CS A or CS B is a logic 0.
Note 2* The Baud Rate register set is accessible only when CS A or CS B is a logic 0 and LCR bit-7 is a logic 1.
Note 3*: Printer Port Register set is accessible only when -CSP is a logic 0 in conjunction with the states of the
interface signal BIDEN and Printer Control Register bit-5 or IOSEL register.
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