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AL2100-DS00-R 数据表(PDF) 35 Page - Broadcom Corporation. |
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AL2100-DS00-R 数据表(HTML) 35 Page - Broadcom Corporation. |
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35 / 52 page ![]() Preliminary Data Sheet AL2100 11/11/02 Broa d c om Co rp o r a ti o n Document AL2100-DS01-405-R Common Registers Page 27 OPERATION MODE REGISTER CRC FOR RECENT RECEIVED PACKET COMMON REGISTERS The following registers are mapped to Registers 28 through 31 on the TP PHY. Register 28[15:12] is used as a page select. There are multiple pages of Registers 29 through 31, depending on the value of Register 28[15:12]. MODE CONTROL REGISTER Table 28: Register 23: Operation Mode Register Bit Description Bit Name Description Mode Default 15:14 Reserved 13 Clk_rclk_save 1 = Set rclk save mode. Rclk shuts off after 64 cycles of each packet. 0 12 Reserved 11 Scramble disable 1 = Disable scrambler RW 1 10 Reserved RW 0 9 Pcsbp 1 = Enable PCS bypass mode. RW 0 23:8 Reserved RW 0 7:6 Reserved 5 Reserved RO 0 4:0 Reserved RO XXXXX Table 29: Register 24: CRC for Recent Received Packet Bit Description Bit Name Description Mode Default 15:0 CRC16 CRC16 value displayed. For system level test purposes. RC 0000H Table 30: Common Register 0: Mode Control Register (Map to TP_PHY, Reg. 28) Bit Description a.28.15:12 Page Selection Select multiple common register pages. RW 0000 a.28.11:7 Reserved RO 0000 a.28.6 Reserved RO 1 a.28.5 Reserved RO 0 a.28.4 Reserved RO 0 a.28.3 Reserved RW 0 a.28.2 Act select Act event select. 0 = Receive activity. 1 = TX or RX activity. RW 1 a.28.1 Reserved RO 0 a.28.0 Reserved RO 0 |
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