OX16C954 データシートの表示（PDF） - Unspecified
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OX16C954 Datasheet PDF : 54 Pages
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OXFORD SEMICONDUCTOR LTD.
OX16C954 rev B
CONTENTS
FEATURES .................................................................................................................................................................................................1
REV B ENHANCEMENTS.........................................................................................................................................................................1
DESCRIPTION............................................................................................................................................................................................ 2
CONTENTS................................................................................................................................................................................................. 3
1 PERFORMANCE COMPARISON ......................................................................................................................................................5
2 BLOCK DIAGRAM............................................................................................................................................................................... 7
3 PIN INFORMATION .............................................................................................................................................................................8
4 PIN DESCRIPTIONS .........................................................................................................................................................................10
4.1 Further Pin Information ...........................................................................................................................................................15
5 MODE SELECTION ...........................................................................................................................................................................16
5.1 450 Mode ....................................................................................................................................................................................16
5.2 550 Mode ....................................................................................................................................................................................16
5.3 Extended 550 Mode ..................................................................................................................................................................16
5.4 750 Mode ....................................................................................................................................................................................16
5.5 650 Mode ....................................................................................................................................................................................16
5.6 950 Mode ....................................................................................................................................................................................17
6 REGISTER DESCRIPTION TABLES...............................................................................................................................................18
7 RESET CONFIGURATION................................................................................................................................................................22
7.1 Hardware Reset.........................................................................................................................................................................22
7.2 Software Reset ..........................................................................................................................................................................22
8 TRANSMITTER AND RECEIVER FIFOS ........................................................................................................................................23
8.1 FIFO Control Register ‘FCR’ ...................................................................................................................................................23
9 LINE CONTROL & STATUS.............................................................................................................................................................24
9.1 False Start Bit Detection..........................................................................................................................................................24
9.2 Line Control Register ‘LCR’ ....................................................................................................................................................24
9.3 Line Status Register ‘LSR’ ......................................................................................................................................................25
10 INTERRUPTS & SLEEP MODE .......................................................................................................................................................26
10.1 Interrupt Enable Register ‘IER’...............................................................................................................................................26
10.2 Interrupt Status Register ‘ISR’................................................................................................................................................27
10.3 Interrupt Description ................................................................................................................................................................27
10.4 Sleep Mode.................................................................................................................................................................................28
11 MODEM INTERFACE........................................................................................................................................................................28
11.1 Modem Control Register ‘MCR’..............................................................................................................................................28
11.2 Modem Status Register ‘MSR’................................................................................................................................................29
12 OTHER STANDARD REGISTERS...................................................................................................................................................30
12.1 Divisor Latch Registers ‘DLL & DLM’....................................................................................................................................30
12.2 Scratch Pad Register ‘SPR’.....................................................................................................................................................30
13 AUTOMATIC FLOW CONTROL.......................................................................................................................................................31
13.1 Enhanced Features Register ‘EFR’........................................................................................................................................31
13.2 Special Character Detection ...................................................................................................................................................32
13.3 Automatic In-band Flow Control ............................................................................................................................................32
13.4 Automatic Out-of-band Flow Control ....................................................................................................................................32
14 BAUD RATE GENERATION.............................................................................................................................................................33
14.1 General Operation.....................................................................................................................................................................33
14.2 Clock Prescaler Register ‘CPR’..............................................................................................................................................34
14.3 Times Clock Register ‘TCR’ ....................................................................................................................................................34
14.4 Input Clock Options..................................................................................................................................................................36
Data Sheet Revision 1.0
Page 3
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