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339
Ethernet Communication Module
Ethernet General Control Register #1
Address: A060 0000
Register bit assignment
Bits Access Mnemonic Reset Description
D31 R/W ERX 0 Enable RX packet processing (see "Receive packet
processor" on page 324)
0 Reset RX
1Enable RX
Used as a soft reset for the RX. When cleared, resets all
logic in the RX and flushes the FIFO.
The ERX bit must be set active high to allow data to be
received from the MAC receiver.
D30 R/W ERXDMA 0 Enable receive DMA
0 Disable receive DMA data request (use to stall
receiver)
1 Enable receive DMA data request
Must be set active high to allow the
RX_RD logic to
request the AHB bus to DMA receive frames into system
memory.
Set this bit to zero to temporarily stall the receive side
Ethernet DMA. The
RX_RD logic stalls on frame
boundaries.
D29 N/A Reserved N/A N/A
Table 206: Ethernet General Control Register #1
RX
ALIGN
MAC_
HRST
ITXA
13121110987654321015 14
PHY_MODE
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Rsvd
ERX
SHT
Not used ETX
ETX
DMA
Not
used
ERX
INIT
ERX
ERX
DMA
Reserved
ReservedNot used
Rsvd