Am79C973/Am79C975
297
P R E L I M I N A R Y
CSR32
Next Transmit Descriptor Address
Lower . . . . . . . . . . . . . . . . . . . . . . .142
CSR33
Next Transmit Descriptor Address
Upper . . . . . . . . . . . . . . . . . . . . . . .142
CSR34
Current Transmit Descriptor Address
Lower . . . . . . . . . . . . . . . . . . . . . . .142
CSR35
Current Transmit Descriptor Address
Upper . . . . . . . . . . . . . . . . . . . . . . .142
CSR36
Next Next Receive Descriptor Address
Lower . . . . . . . . . . . . . . . . . . . . . . .142
CSR37
Next Next Receive Descriptor Address
Upper . . . . . . . . . . . . . . . . . . . . . . .142
CSR38
Next Next Transmit Descriptor Address
Lower . . . . . . . . . . . . . . . . . . . . . . .143
CSR39
Next Next Transmit Descriptor Address
Upper . . . . . . . . . . . . . . . . . . . . . . .143
CSR4
Test and Features Control . . . . . . . . . .129
CSR40
Current Receive Byte Count . . . . . . . .143
CSR41
Current Receive Status . . . . . . . . . . . . .143
CSR42
Current Transmit Byte Count . . . . . . .143
CSR43
Current Transmit Status . . . . . . . . . . . .143
CSR44
Next Receive Byte Count . . . . . . . . . .143
CSR45
Next Receive Status . . . . . . . . . . . . . . .144
CSR46
Transmit Poll Time Counter . . . . . . . .144
CSR47
Transmit Polling Interval . . . . . . . . . . .144
CSR48
Receive Poll Time Counter . . . . . . . . .145
CSR49
Receive Polling Interval . . . . . . . . . . . .145
CSR5
Extended Control and Interrupt 1 . . . .130
CSR58
Software Style . . . . . . . . . . . . . . . . . . .145
CSR6
RX/TX Descriptor Table Length . . . . .133
CSR60
Previous Transmit Descriptor Address
Lower . . . . . . . . . . . . . . . . . . . . . . .147
CSR61
Previous Transmit Descriptor Address
Upper . . . . . . . . . . . . . . . . . . .147, 148
CSR62
Previous Transmit Byte Count . . . . . . .148
CSR63
Previous Transmit Status . . . . . . . . . . .148
CSR64
Next Transmit Buffer Address
Lower . . . . . . . . . . . . . . . . . . . . . . .148
CSR65
Next Transmit Buffer Address
Upper . . . . . . . . . . . . . . . . . . .148, 149
CSR66
Next Transmit Byte Count . . . . . .148, 149
CSR67 . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Next Transmit Status . . . . . . . . . . . . . .149
CSR7
Extended Control and Interrupt 2 . . . .133
CSR72
Receive Ring Counter . . . . . . . . . . . . .149
CSR74
Transmit Ring Counter . . . . . . . . . . . .149
CSR76
Receive Ring Length . . . . . . . . . . . . . .149
CSR78
Transmit Ring Length . . . . . . . . . . . . .149
CSR8
Logical Address Filter 0 . . . . . . . . . . .136
CSR80
DMA Transfer Counter and FIFO
Threshold Control . . . . . . . . . . . . .150
CSR82
Transmit Descriptor Address Pointer
Lower . . . . . . . . . . . . . . . . . . . . . . .152
CSR84
DMA Address Register Lower . . . . . .152
CSR85
DMA Address Register Upper . . . . . . .152
CSR86
Buffer Byte Counter . . . . . . . . . . . . . .152