Broadcom BCM5722 - Table 504: Expansion Register 10 H: Cable Diagnostic Controls

Programmer’s Guide BCM5722
10/15/07
Broadcom Corporation
Document 5722-PG101-R Transceiver Registers Page 440
EXPANSION REGISTER 10H: CABLE DIAGNOSTIC CONTROLS
The following expansion registers are enabled by writing to “Expansion Register Access Register (PHY_ADDR = 0x1,
Reg_Addr = 17h)” on page 434 bits [11:0] = F10h, and read/write access is through register 15h.
Natural Link
Setting bit 2 = 1, skips the Open and Shorts check when in Cable Diagnostic Mode.
Cable Diag Begin
Setting bit 1 =1, begins the Cable Diagnostic Algorithm when in Cable Diagnostic Mode.
Cable Diag Mode
Setting bit 0 = 1, enables Cable Diagnostic Mode. See “Expansion Register 11h: Cable Diagnostic Results” on page 441,
“Expansion Register 12h: Cable Diagnostic Lengths Channels 1/2” on page 442, and “Expansion Register 13h: Cable
Diagnostic Lengths Channels 3/4” on page 443, for more details.
Table 504: Expansion Register 10h: Cable Diagnostic Controls
Bit Field Description Init Access
15:3 Reserved Write as 0000h, ignore on read. 0000h R/W
2 Natural Link
• 1 = Skips checking of open/short.
• 0 = Enables checking of open/short.
0R/W
1 Cable Diag Begin
• 1= Begins cable diagnostic algorithm.
• 0 = Cable diagnostic algorithm is not started.
0R/W
SC
0 Cable Diag Mode
• 1 = Cable diagnostic mode enabled.
• 0 = Cable diagnostic mode not enabled.
0R/W