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
14.5 TTL Clock Mode ........................................................................................................................................................................36
14.6 External 1x Clock Mode...........................................................................................................................................................36
14.7 Crystal Oscillator Circuit .........................................................................................................................................................36
15 ADDITIONAL FEATURES ................................................................................................................................................................37
15.1 Additional Status Register ‘ASR’...........................................................................................................................................37
15.2 FIFO Fill levels ‘TFL & RFL’.....................................................................................................................................................37
15.3 Additional Control Register ‘ACR’.........................................................................................................................................37
15.4 Transmitter Trigger Level ‘TTL’..............................................................................................................................................39
15.5 Receiver Interrupt. Trigger Level ‘RTL’.................................................................................................................................39
15.6 Flow Control Levels ‘FCL’ & ‘FCH’ ........................................................................................................................................39
15.7 Device Identification Registers ..............................................................................................................................................39
15.8 Clock Select Register ‘CKS’....................................................................................................................................................40
15.9 Nine-bit Mode Register ‘NMR’.................................................................................................................................................40
15.10 Modem Disable Mask ‘MDM’ ..............................................................................................................................................41
15.11 Readable FCR ‘RFC’ ............................................................................................................................................................41
15.12 Good-data status register ‘GDS’ .......................................................................................................................................41
15.13 DMA Status Register ‘DMS’................................................................................................................................................42
15.14 Port Index Register ‘PIX’.....................................................................................................................................................42
15.15 Clock Alteration Register ‘CKA’ ........................................................................................................................................42
16 OPERATING CONDITIONS..............................................................................................................................................................43
17 DC ELECTRICAL CHARACTERISTICS .........................................................................................................................................44
17.1 5V Operation..............................................................................................................................................................................44
17.2 3.3V Operation...........................................................................................................................................................................45
18 AC ELECTRICAL CHARACTERISTICS .........................................................................................................................................46
18.1 5V Operation..............................................................................................................................................................................46
18.2 3.3V Operation...........................................................................................................................................................................47
19 TIMING WAVEFORMS......................................................................................................................................................................48
20 PACKAGE INFORMATION...............................................................................................................................................................50
21 ORDERING INFORMATION.............................................................................................................................................................52
NOTES ......................................................................................................................................................................................................53
CONTACT DETAILS................................................................................................................................................................................54
Data Sheet Revision 1.0
Page 4
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