UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
683 of 1269
NXP Semiconductors
UM10503
Chapter 26: LPC43xx Ethernet
26.6.1 MAC Configuration register
The MAC Configuration register establishes receive and transmit operating modes.
DMA_TRANS_POLL_DEMAND
R/W
0x1004
Transmit poll demand
register
0x0000 0000
DMA_REC_POLL_DEMAND
R/W
0x1008
Receive poll demand
register
0x0000 0000
DMA_REC_DES_ADDR
R/W
0x100C
Receive descriptor list
address register
0x0000 0000
DMA_TRANS_DES_ADDR
R/W
0x1010
Transmit descriptor list
address register
0x0000 0000
DMA_STAT
R/W
0x1014
Status register
0x0000 0000
DMA_OP_MODE
R/W
0x1018
Operation mode register
0x0000 0000
DMA_INT_EN
R/W
0x101C
Interrupt enable register
0x0000 0000
DMA_MFRM_BUFOF
RO
0x1020
Missed frame and buffer
overflow register
0x0000 0000
DMA_REC_INT_WDT
R/W
0x1024
Receive interrupt watchdog
timer register
0x0000 0000
-
-
0x1028 -
0x1044
Reserved
-
-
DMA_CURHOST_TRANS_DES
RO
0x1048
Current host transmit
descriptor register
0x0000 0000
DMA_CURHOST_REC_DES
RO
0x104C
Current host receive
descriptor register
0x0000 0000
DMA_CURHOST_TRANS_BUF
RO
0x1050
Current host transmit buffer
address register
0x0000 0000
DMA_CURHOST_REC_BUF
RO
0x1054
Current host receive buffer
address register
0x0000 0000
-
0x1058
-
-
-
Table 531. Register overview: Ethernet MAC and DMA (base address 0x4001 0000)
Name
Access
Address
offset
Description
Reset value
Reference
Table 532. MAC Configuration register (MAC_CONFIG, address 0x4001 0000) bit description
Bit
Symbol
Description
Reset
value
Access
1:0
-
Reserved
00
RO
2
RE
Receiver enable
When this bit is set, the receiver state machine of the MAC is enabled for receiving
frames from the MII. When this bit is reset, the MAC receive state machine is disabled
after the completion of the reception of the current frame, and will not receive any
further frames from the MII.
0
R/W
3
TE
Transmitter Enable
When this bit is set, the transmit state machine of the MAC is enabled for
transmission on the MII. When this bit is reset, the MAC transmit state machine is
disabled after the completion of the transmission of the current frame, and will not
transmit any further frames.
0
R/W