Cirrus-logic CS8900A User Manual download pdf (Page 70)

70 DS271F5

CS8900A

Crystal LAN™ Ethernet Controller

CIRRUS LOGIC PRODUCT DATASHEET

CMD, the length of the transmitted frame is written into this register. The length of the transmitted frame may be

modified by the configuration of the TxPadDis and InhibitCRC bits in the TxCMD register. See Table 36, and

Section 5.6 on page 99. TxLength must be >3 and < 1519.

Since this register is write-only, it’s initial state after reset is undefined.

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 137 138

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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