Broadcom BCM5722 - Table 515: Interrupt Mask Register (Phy_Addr = 0 X1, Reg_Addr = 1 Bh); Table 516: Spare Control 1 Register (Address 1 Ch, Shadow Value 00010)

BCM5722 Programmer’s Guide
10/15/07
Broadcom Corporation
Page 455 Transceiver Registers Document 5722-PG101-R
INTERRUPT MASK REGISTER (PHY_ADDR = 0X1, REG_ADDR = 1BH)
SPARE CONTROL 1 (PHY_ADDR = 0X1, REG_ADDR = 1CH, SHADOW 00010B)
Write Enable
During a write to this register, setting Spare Control 1 register bit 15 to a 1 allows writing to bits [7:0] of this register. For
reading the values of bits [9:0], perform an MDIO write with bit 15 set to a 0 and preferred shadow values in bits [14:10]. The
next MDIO read of register address 1Ch contains the preferred shadow register values in bits [9:0].
Shadow Register Selector
Bits [14:10] of this register must be set to 00010 to enable read/write to the Spare Control 1 register address 1Ch.
Link LED Mode
Bit 0 of MII register 1Ch with shadow value 00010 selects the link LED mode. When this bit is set, it enables the link LED
mode. The LINKSPD2
/LINKSPD1 are Link/Speed LED and SLAVE LED is LINK LED to indicate a link for 10BASE-T,
100BASE-TX or 1000BASE-T. When this bit is cleared, the LINKSPD2
, LINKSPD1, and SLAVE are in their normal mode.
Table 515: Interrupt Mask Register (PHY_Addr = 0x1, Reg_Addr = 1Bh)
Bit Field Description Init Access
15:0 Interrupt Mask Vector When bit n of the Interrupt Mask Register is written to 1, the
interrupt corresponding to the same bit in the Interrupt
Status Register is masked. The status bits still operate
normally when the interrupt is masked, but do not generate
an interrupt output. When the bit is written to 0, the interrupt
is unmasked.
• 1 = Interrupt masked, status bits operate normally.
• 0 = Interrupt enabled, status bits operate normally.
11…1 R/W
Table 516: Spare Control 1 Register (Address 1Ch, Shadow Value 00010)
Bit Field Description Init Access
15 Write Enable • 1 = Write bits [9:0].
• 0 = Read bits [9:0].
0R/W
14:10 Shadow Register Selector 00010 = Spare Control 1 register. 00010 R/W
9:1 Reserved Write as 00h, ignore when read. 00h R/W
0Link LED Mode
• 1 = Enable link LED mode.
• LINKSPD[2:1] = speed.
• 00 = 1000BASE-T link.
• 01 = 100BASE-TX link.
• 10 = 10BASE-T link or no link.
• SLAVE = Active low 10/100/1000BASE-T link.
• 0 = Normal link LED mode.
0R/W