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EMAC Module Registers
5.33 MAC Configuration Register (MACCONFIG)
The MAC configuration register (MACCONFIG) is shown in Figure 71 and described in Table 70.
Figure 71. MAC Configuration Register (MACCONFIG)
31 24 23 16
TXCELLDEPTH RXCELLDEPTH
R-3h R-3h
15 8 7 0
ADDRESSTYPE MACCFIG
R-2h R-2h
LEGEND: R = Read only; -n = value after reset
Table 70. MAC Configuration Register (MACCONFIG) Field Descriptions
Bit Field Value Description
31-24 TXCELLDEPTH 3h Transmit cell depth. These bits indicate the number of cells in the transmit FIFO.
23-16 RXCELLDEPTH 3h Receive cell depth. These bits indicate the number of cells in the receive FIFO.
15-8 ADDRESSTYPE 2h Address type
7-0 MACCFIG 2h MAC configuration value
5.34 Soft Reset Register (SOFTRESET)
The soft reset register (SOFTRESET) is shown in Figure 72 and described in Table 71.
Figure 72. Soft Reset Register (SOFTRESET)
31 16
Reserved
R-0
15 1 0
Reserved SOFTRESET
R-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 71. Soft Reset Register (SOFTRESET) Field Descriptions
Bit Field Value Description
31-1 Reserved 0 Reserved
0 SOFTRESET Software reset. Writing a 1 to this bit causes the EMAC logic to be reset. Software reset occurs
when the receive and transmit DMA controllers are in an idle state to avoid locking up the
Configuration bus. After writing a 1 to this bit, it may be polled to determine if the reset has
occurred. If a 1 is read, the reset has not yet occurred. If a 0 is read, then a reset has occurred.
0 A software reset has not occurred.
1 A software reset has occurred.
115
SPRUFL5B–April 2011 EMAC/MDIO Module
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