Broadcom BCM5722 - Table 555: 10 BASE-T Auxiliary Error and General Status Register (Address 28 D, 1 Ch)

Programmer’s Guide BCM5722
10/15/07
Broadcom Corporation
Document 5722-PG101-R Transceiver Registers (BCM5906/BCM5906M) Page 504
10BASE-T Auxiliary Error And General Status Register
MDIX Status
This bit, when read as a 1, indicates that the MDI TD± and RD± signals for the PHY have been swapped. The cause for this
is one of the following:
• The MDIX Swap bit was manually set to a 1, or
• The HP Auto-MDIX function is enabled and the PHY has detected an MDI cross-over cable.
MDIX Manual Swap
When this bit is set to a 1, the MDI TD± and RD± signals for the PHY are forced into being swapped.
HP Auto-MDIX Disable
When this bit is set to a 1, the HP Auto-MDIX function is disabled in the PHY.
Table 555: 10BASE-T Auxiliary Error and General Status Register (Address 28d, 1Ch)
Bit Name R/W Description Default
15:14 Reserved - - 0
13 MDIX Status RO 0 = MDI is in use
1 = MDIX is in use
0
12 MDIX Manual Swap RW 0 = MDI or MDIX if MDIX is not disabled
1 = Force MDIX
0
11 HP Auto-MDIX Disable R/W 0 = Enable HP Auto-MDIX
1 = Disable HP Auto-MDIX
0
10 Manchester Code Error RO 1 = Manchester code error (10BASE-T) 0
9 End Of Frame Error RO 1 = EOF detection error (10BASE-T) 0
8 Reserved - - 0
7:5 Reserved - - 001
4 Reserved - - 0
3 Auto-Negotiation Indication RO 1 = Auto-negotiation activated
0 = Speed forced manually
1
2 Force 100/10 Indication RO 1 = Speed forced to 100BASE-X
0 = Speed forced to 10BASE-T
1
1 Speed Indication RO 1 = 100BASE-X
0 = 10BASE-T
0
0 Full-Duplex Indication RO 1 = Full-duplex active
0 = Full-duplex not active
0
All Error bits in the Auxiliary Error and General Status Register are read-only and are latched high. When certain types of
errors occur in the PHY Core, one or more corresponding error bits become 1. They remain so until the register is read, or
until a chip reset occurs. All such errors necessarily result in data errors, and are indicated by a high value on the RXER
signal at the time the error occurs.
R/W = Read/Write, RO = Read only, SC = Self Clear, LL = Latched Low, LH = Latched High, LL and LH Clear after read
operation. Use default values of reserved bit(s) when writing to reserved bit(s).