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VSC8530-05 Datasheet(PDF) 45 Page - Microsemi Corporation |
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VSC8530-05 Datasheet(HTML) 45 Page - Microsemi Corporation |
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45 / 80 page ![]() Registers VMDS-10516 VSC8530-05 Datasheet Revision 4.1 38 4.3 Extended Page 1 Registers To access the extended page 1 registers (17E1–30E1), enable extended register access by writing 0x0001 to register 31. Writing 0x0000 to register 31 restores the main register access. When extended page 1 register access is enabled, reads and writes to registers 16–30 affect the extended registers 17E1–30E1 instead of those same registers in the IEEE-specified register space. Registers 0–15 are not affected by the state of the extended page register access. 4.3.1 Cu Media CRC Good Counter Register 18E1 makes it possible to read the contents of the CRC good counter for packets that are received on the Cu media interface: the number of CRC routines that have executed successfully. The following table shows the expected readouts. 4.3.2 Extended Mode Control Register 19E1 controls the extended LED and other chip modes. The following table shows the settings available. Table 44 • Extended Registers Page 1 Space Address Name 17E1 Reserved 18E1 Cu Media CRC Good Counter 19E1 Extended Mode Control 20E1 Extended PHY Control 3 (ActiPHY) 21E1–22E1 Reserved 23E1 Extended PHY Control 4 (PoE and CRC Error Counter) 27E1–28E1 Reserved 29E1 Ethernet Packet Generator (EPG) 1 30E1 EPG 2 Table 45 • Cu Media CRC Good Counter, Address 18E1 (0x12) Bit Name Access Description Default 15 Packet since last read RO Self-clearing bit. 1: Packet received since last read. 0 14 Reserved RO Reserved. 13:0 Cu Media CRC good counter contents RO Self-clearing bit. Counter containing the number of packets with valid CRCs modulo 10,000; this counter does not saturate and will roll over to zero on the next good packet received after 9,999. 0x0000 Table 46 • Extended Mode Control, Address 19E1 (0x13) Bit Name Access Description Default 15:14 Reserved RO Reserved. 13 LED1 Extended Mode R/W Sticky bit. 1: See Basic Serial LED Mode, page 18. 0 12 LED0 Extended Mode R/W Sticky bit. 1: See Basic Serial LED Mode, page 18. 0 |
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