18H: Misc Test Register 1 (Shadow Register Selector = "100") - Broadcom NetXtreme/NetLink BCM5718 Series Programmer's Manual

BCM5718 Programmer's Guide
Bit Name
4 DISABLE BLOCK LINK10
WINDOW MODE ON
WRITES,
IP PHONE MISMATCH ON
READS
3 DISABLE SWITCH ON/
OFF BLOCK LINK10
WINDOW MODE ON
WRITES,
IP PHONE DETECTED
ON READS
2:0 SHADOW REGISTER
SELECTOR
(REFERENCE ONLY)

18h: Misc Test Register 1 (Shadow Register Selector = "100")

Bit Name
15 REMOTE LOOPBACK
ENABLE
14 TDK FIX ENABLE
13 ENABLE DEDICATED
10BT DLL BYPASS
CLOCK
12 BLOCK 10BT RESTART
AUTO-NEGOTIATION
Broadcom
®
January 29, 2016 • 5718-PG108-R
RW Description
RW Write:
1 = disable block link10 window mode
0 = enable block link10 window mode
(filters out received linkpulses for 2.5-5us after
detecting a linkpulse; ip phone detection must
be enabled)
Read:
1 = link partner is not an IP PHONE
0 = link partner is an IP PHONE if bit 3 set other
wise not determined
RW Write:
1 = block link10 window mode always on/off
(controlled by bit 4)
0 = shut off block link10 window mode when IP
MISMATCH detected. Restart nway_flp_rx
block (ip phone detection must be enabled)
Read:
1 = link partner is an IP PHONE
0 = link partner is not an IP PHONE if bit 4 set
on read otherwise not determined
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.
RW Description
RW 1 = enable loopback from MDI (cable end)
receive packet, through pcs and back to MDI
trans mit packet.
(only use in copper or fiber mode)
0 = disable loopback
RW 1 = TDK fix (extend EOP on transmit 10BT
packets)
RW 1 = 10BT dll bypass clock generated from tpin10
in dll bypass mode
0 = 10BT dll bypass clock generated from
inverted xtali input in dll bypass mode (BASET,
ADC10BT, PC10BT, CRS10BT, DAC10_100
test modes use tpin10; register value ignored).
RW 1 = prevent 10BT from restarting auto-
negotiation in order to break the link
0 = normal operation
10h–1Fh Register Map Detailed Description
Default
0
0
011
Default
0
1
0
0
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