GR740-UM-DS, Nov 2017, Version 1.7 215 www.cobham.com/gaisler
GR740
Table 237. 0x4 - GRETH_GBIT status register.
31 9876543210
RESERVED PS IA TS TA RA TI RI TE RE
0 0 0 NRNRNRNRNRNR
wc wc wc wc wc wc wc wc wc
31: 9 RESERVED
8 PHY status changes (PS) - Set each time a PHY status change is detected.
7 Invalid address (IA) - A packet with an address not accepted by the MAC was received. Cleared
when written with a one.
6 Too small (TS) - A packet smaller than the minimum size was received. Cleared when written with a
one.
5 Transmitter AHB error (TA) - An AHB error was encountered in transmitter DMA engine. Cleared
when written with a one. Not Reset.
4 Receiver AHB error (RA) - An AHB error was encountered in receiver DMA engine. Cleared when
written with a one. Not Reset.
3 Transmit successful (TI) - A packet was transmitted without errors. Cleared when written with a one.
Not Reset.
2 Receive successful (RI) - A packet was received without errors. Cleared when written with a one.
Not Reset.
1 Transmitter error (TE) - A packet was transmitted which terminated with an error. Cleared when
written with a one. Not Reset.
0 Receiver error (RE) - A packet has been received which terminated with an error. Cleared when writ-
ten with a one. Not Reset.
Table 238. 0x8 - GRETH_GBIT MAC address MSB.
31 16 15 0
RESERVED Bit 47 downto 32 of the MAC Address
NR
rw
31: 16 RESERVED
15: 0 The two most significant bytes of the MAC Address. Not Reset.
Table 239. 0xC - GRETH_GBIT MAC address LSB.
31 0
Bit 31 downto 0 of the MAC Address
NR
rw
31: 0 The 4 least significant bytes of the MAC Address. Not Reset.
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