ox16c954 ETC-unknow, ox16c954 Datasheet - Page 3
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ox16c954
Manufacturer Part Number
ox16c954
Description
High Performance Quad Uart With 128-byte Fifos Intel / Motorola Bus Interface
Manufacturer
ETC-unknow
Datasheet
1.OX16C954.pdf
(54 pages)
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C
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
5 MODE SELECTION...........................................................................................................................................................................16
5.1
5.2
5.3
5.4
5.5
5.6
6 REGISTER DESCRIPTION TABLES...............................................................................................................................................18
7 RESET CONFIGURATION................................................................................................................................................................22
7.1
7.2
8 TRANSMITTER AND RECEIVER FIFOS ........................................................................................................................................23
8.1
9 LINE CONTROL & STATUS.............................................................................................................................................................24
9.1
9.2
9.3
10 INTERRUPTS & SLEEP MODE .......................................................................................................................................................26
10.1
10.2
10.3
10.4
11 MODEM INTERFACE........................................................................................................................................................................28
11.1
11.2
12 OTHER STANDARD REGISTERS...................................................................................................................................................30
12.1
12.2
13 AUTOMATIC FLOW CONTROL.......................................................................................................................................................31
13.1
13.2
13.3
13.4
14 BAUD RATE GENERATION.............................................................................................................................................................33
14.1
14.2
14.3
14.4
Data Sheet Revision 1.0
OXFORD SEMICONDUCTOR LTD.
ONTENTS
Further Pin Information ...........................................................................................................................................................15
450 Mode ....................................................................................................................................................................................16
550 Mode ....................................................................................................................................................................................16
Extended 550 Mode ..................................................................................................................................................................16
750 Mode ....................................................................................................................................................................................16
650 Mode ....................................................................................................................................................................................16
950 Mode ....................................................................................................................................................................................17
Hardware Reset.........................................................................................................................................................................22
Software Reset ..........................................................................................................................................................................22
FIFO Control Register ‘FCR’ ...................................................................................................................................................23
False Start Bit Detection..........................................................................................................................................................24
Line Control Register ‘LCR’ ....................................................................................................................................................24
Line Status Register ‘LSR’ ......................................................................................................................................................25
Interrupt Enable Register ‘IER’...............................................................................................................................................26
Interrupt Status Register ‘ISR’................................................................................................................................................27
Interrupt Description ................................................................................................................................................................27
Sleep Mode.................................................................................................................................................................................28
Modem Control Register ‘MCR’..............................................................................................................................................28
Modem Status Register ‘MSR’................................................................................................................................................29
Divisor Latch Registers ‘DLL & DLM’....................................................................................................................................30
Scratch Pad Register ‘SPR’.....................................................................................................................................................30
Enhanced Features Register ‘EFR’........................................................................................................................................31
Special Character Detection ...................................................................................................................................................32
Automatic In-band Flow Control ............................................................................................................................................32
Automatic Out-of-band Flow Control ....................................................................................................................................32
General Operation.....................................................................................................................................................................33
Clock Prescaler Register ‘CPR’..............................................................................................................................................34
Times Clock Register ‘TCR’ ....................................................................................................................................................34
Input Clock Options..................................................................................................................................................................36
OX16C954 rev B
Page 3