Cirrus-logic CS8900A Manuale Utente Pagina 79
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DS271F5 79
CS8900A
Crystal LAN™ Ethernet Controller
CIRRUS LOGIC PRODUCT DATASHEET
An enabled interrupt occurs.
The selected interrupt
request pin is driven high
(active) if not already high.
ISQ = 0000h?
Yes
The host reads the ISQ.
The selected interrupt
request pin is driven low.
No
Process applicable
RxEvent bits: Extradata,
Runt, CRCerror, RxOK.
Process applicable
TxEvent bits: 16coll, Jabber,
Out-of-window, TxOK.
Process applicable BufEvent
bits: RxDest, Rx128, RxMiss,
TxUnderrun, Rdy4Tx,
RxDMAFrame, SWint.
Process RxMISS counter.
Process TxCOL counter.
Which
Event
report
type?
RxEvent
TxEvent
BufEvent
RxMISS
TxCOL
None of the above
Service
Default
EXIT.
Interrupts
re-enabled.
(Interrupts
will be
disabled
for at least
1.6 us.)
Figure 19. Interrupt Status Queue
- Crystal LAN™ Ethernet 1
- Controller 1
- TABLE OF CONTENTS 2
- 8 DS271F5 8
- DS271F5 9 9
- and Auto 9
- 10 DS271F5 10
- Top View 12
- DS271F5 13 13
- 14 DS271F5 14
- DS271F5 15 15
- 16 DS271F5 16
- DS271F5 17 17
- Table 3. DMA Assignments 19
- 20 DS271F5 20
- Default Configuration 21
- DS271F5 23 23
- Figure 4. Group Header 23
- 24 DS271F5 24
- Table 8. EEPROM Commands 25
- 26 DS271F5 26
- DS271F5 27 27
- 30 DS271F5 30
- Figure 8. MAC Interface 30
- DS271F5 31 31
- 32 DS271F5 32
- DS271F5 33 33
- Figure 10. Two-Part Deferral 33
- 34 DS271F5 34
- Figure 11. Simple Deferral 34
- 10BASE-T 35
- Transceiver 35
- Table 12. Interface Selection 36
- 10BASE-T Transceiver 37
- Packet Packet 38
- DS271F5 39 39
- Figure 15. AUI 39
- 40 DS271F5 40
- 4.3 Bus Interface Registers 44
- 4.3.2 I/O Base Address 44
- 4.3.3 Interrupt Number 44
- 4.3.4 DMA Channel Number 45
- 4.3.5 DMA Start of Frame 45
- 4.3.6 DMA Frame Count 46
- 4.3.7 RxDMA Byte Count 46
- 4.3.8 Memory Base Address 46
- 4.3.9 Boot PROM Base Address 46
- 4.3.11 EEPROM Command 47
- 4.3.12 EEPROM Data 48
- DS271F5 49 49
- 52
- 76543210 53
- RegContent RegNum 53
- FEDCBA9 8 53
- RegContent 53
- StreamE Skip_1 000011 54
- PromiscuousA IAHashA 000101 56
- 0000 0000 0000 1000 58
- RxDMAiE SWint-X 001011 59
- RxDMA frame SWint 001100 60
- 0000 0000 0000 1100 61
- SerTxOn SerRxON 010011 62
- LinkOK 010100 63
- CRS PolarityOK 10BT AUI 63
- RESET 010101 64
- TxBidErr 011000 66
- Rdy4Tx NOW 66
- AUI Delay 011100 68
- AUI Delay 68
- 4.5.2 Transmit Length 69
- 4.6 Address Filter Registers 71
- 72 DS271F5 72
- Word Transfer 73
- 74 DS271F5 74
- Table 18. I/O Mode Mapping 75
- DS271F5 77 77
- 78 DS271F5 78
- ISQ = 0000h? 79
- Frame Pre 80
- Processed 80
- Table 21 81
- DS271F5 85 85
- Table 24. Example Memory Map 86
- RxStatus - Frame 2 93
- DS271F5 97 97
- 98 DS271F5 98
- 102 DS271F5 102
- DS271F5 103 103
- 104 DS271F5 104
- DS271F5 105 105
- Table 41 108
- Table 39 108
- Table 40 108
- Table 42 109
- Table 41. (continued) 109
- 110 DS271F5 110
- DS271F5 111 111
- 7.3 DC CHARACTERISTICS (T 112
- SA [15:0] 114
- AEN, SBHE 114
- SD [15:0] Valid Data 114
- DIRECTION: 115
- IN or OUT of chip 115
- Valid Address 117
- SD [15:0] Valid Data In 117
- EEData Out 120
- EEData In 120
- 7.5 10BASE-T WIRING 121
- 7.6 AUI WIRING 122
- 8.3 DC CHARACTERISTICS (T 123
- 8.5 10BASE-T WIRING 132
- 8.6 AUI WIRING 133
- 100L LQFP PACKAGE DRAWING 134
- DS271F5 135 135
- 136 DS271F5 136
- DS271F5 137 137
- 138 DS271F5 138
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