Broadcom BCM5722 - Table 487: 1000 BASE-T Control Register (Phy_Addr = 0 X1, Reg_Addr = 09 H)

BCM5722 Programmer’s Guide
10/15/07
Broadcom Corporation
Page 425 Transceiver Registers Document 5722-PG101-R
1000BASE-T CONTROL REGISTER (PHY_ADDR = 0X1, REG_ADDR = 09H)
Table 487: 1000BASE-T Control Register (PHY_Addr = 0x1, Reg_Addr = 09h)
Bit Field Description Init Access
15:13 Test Mode The BCM5722 Ethernet controller can be placed in one of
four transmit test modes by writing bits 15:13 of the
1000BASE-T Control Register. The transmit test modes
are defined in IEEE 802.3ab. When read, these bits
return the last value written.
• 1 X X = Test Mode 4: Transmitter Distortion Test.
• 0 1 1 = Test Mode 3: Slave Transmit Jitter Test.
• 0 1 0 = Test Mode 2: Master Transmit Jitter Test.
• 0 0 1 = Test Mode 1: Transmit Waveform Test.
• 0 0 0 = Normal Operation.
000 R/W
12 Master/Slave
Configuration Enable
When bit 12 of the 1000BASE-T Control Register is
written to 1, the BCM5722 Ethernet controller master/
slave mode is configured using the manual master/slave
configuration value. When the bit is written to 0, the
master/slave mode is configured using the automatic
resolution function. This bit returns a 1 when manual
master/slave configuration is enabled, otherwise, it
returns a 0.
• 1 = Enable Master/Slave manual configuration value.
• 0 = Automatic Master/Slave configuration.
0R/W
11 Master/Slave
Configuration Value
When bit 12 of the 1000BASE-T Control Register is
written to 1, bit 11 of the 1000BASE-T Control Register
determines the BCM5722 Ethernet controller master/
slave mode of operation. When bit 11 is set to 1, the
BCM5722 Ethernet controller is configured as master.
When bit 11 is set to 0, the BCM5722 Ethernet controller
is configured as slave. When read, this bit returns the last
value written.
• 1 = Configure PHY as Master.
• 0 = Configure PHY as Slave.
0R/W
10 Repeater/DTE When bit 10 of the 1000BASE-T Control Register is
written to 1, the BCM5722 Ethernet controller advertises
that it is a repeater or switch device port. When the bit is
written to 0, the BCM5722 Ethernet controller advertises
that it is a DTE port. The advertised value is used in the
automatic master/slave configuration resolution. The link
partner that advertises repeater mode is configured to
master if the opposing link partner advertises DTE,
otherwise, this bit has no effect. This bit returns a 1 when
advertising repeater/switch mode, otherwise, it returns a
0. By default, the device advertises that it is a DTE.
• 1 = Repeater/switch device port.
• 0 = DTE device.
0R/W