10h–1Fh Register Map Detailed DescriptionBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 519
18h: Manual IP Phone Seed Register (Shadow Register Selector =
“110”)
18h: Miscellaneous Control Register (Shadow Register Selector =
“111”)
Bit Name RW Description Default
15 WRITABLE IP PHONE
SEED
RW 1 = use manual IP Phone seed
0 = normal operation
0
14 SPARE RW write as 0, ignore on read 0
13:3 LOCAL IP PHONE SEED RW returns the automatically generated ip phone
random seed when bit 15 is cleared. Writable
value used when bit 15 is set. The ip phone
seed is a 14 bit value [13:0]. [2:0] cannot be
read.
[2:0] will always use “001” when bit 15 is set.
00
2:0 SHADOW REGISTER
SELECTOR
(REFERENCE ONLY)
RW Writes to the selected shadow register are done
on a single cycle (no setup required).
Reads are selected by first writing to register
18h, shadow 7, bits 14:12.
110
Bit Name RW Description Default
15 WRITE ENABLE
(BITS [8:3])
RW
SC
1 = write bits [8:3]
0 = only write bits [14:12]
0
14:12 SHADOW REGISTER
READ SELECTOR
RW 000 = shadow register 0 read select
001 = shadow register 1 read select
...
111 = shadow register 7 read select
000
11 PACKET COUNTER
MODE
RW 1 = count packets received
0 = count packets transmitted
0
10 BYPASS WIRESPEED
TIMER
RW 1 = Link fail counter will clear as soon as link is
up
0 = Link must be up for at least 2.5 seconds,
otherwise link fail counter will increment.
Note: Can be set only if gphy port
werespd_timer_disable = 0.
1
9 FORCE AUTO MDIX
MODE
RW 1 = Auto-MDIX will operate when autoneg is
disabled via reg 0.12
0 = Auto-MDIX is disabled when autoneg is
disabled via reg 0.12
0
8 RGMII TIMING MODE
(output delay only)
RW 1 = clock delayed 90 degrees
0 = clock and data aligned
0
7 RGMII MODE RW 1 = use reduced GMII mode
0 = normal GMII/MII operation
0
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