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HD151TS206SS Datasheet(PDF) 19 Page - Renesas Technology Corp |
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HD151TS206SS Datasheet(HTML) 19 Page - Renesas Technology Corp |
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19 / 34 page  HD151TS206SS Rev.1.00, Apr.28.2003, page 19 of 34 I 2C Controlled Register Bit Map (cont.) Byte25 Control Register Bit Description Contents Type Default Note 7 CPU Clock Skew1 Control Bit3 R/W 1 6 CPU Clock Skew1 Control Bit2 R/W 0 5 CPU Clock Skew1 Control Bit1 R/W 0 4 CPU Clock Skew1 Control Bit0 Delay Ahead 1000 = +0.00ns, 0111 = –0.25ns 1001 = +0.25ns, 0110 = –0.50ns 1010 = +0.50ns, 0101 = –0.75ns 1011 = +0.75ns, 0100 = –1.00ns 1100 = +1.00ns, 0011 = –1.25ns 1101 = +1.25ns, 0010 = –1.50ns 1110 = +1.50ns, 0001 = –1.75ns 1111 = +1.75ns, 0000 = –2.00ns R/W 0 See Note1 3 CPU Clock Skew2 Control Bit3 R/W 1 2 CPU Clock Skew2 Control Bit2 R/W 0 1 CPU Clock Skew2 Control Bit1 R/W 0 0 CPU Clock Skew2 Control Bit0 Delay Ahead 1000 = +0.0ns, 0111 = –0.1ns 1001 = +0.1ns, 0110 = –0.2ns 1010 = +0.2ns, 0101 = –0.3ns 1011 = +0.3ns, 0100 = –0.4ns 1100 = +0.4ns, 0011 = –0.5ns 1101 = +0.5ns, 0010 = –0.6ns 1110 = +0.6ns, 0001 = –0.7ns 1111 = +0.7ns, 0000 = –0.8ns R/W 0 See Note1 Note: 1. Total CPU Clock Skew is Skew1+Skew2. Byte26 Control Register Bit Description Contents Type Default Note 7 PCIF / PCI Clock Skew2 Control Bit3 R/W 0 6 PCIF / PCI Clock Skew2 Control Bit2 R/W 0 5 PCIF / PCI Clock Skew2 Control Bit1 R/W 0 4 PCIF / PCI Clock Skew2 Control Bit0 Skew2 is “Late” Skew that is Delay Time from “Normal” Skew1. 0000 = +0.0ns, 1000 = +4.0ns 0001 = +0.5ns, 1001 = +4.5ns 0010 = +1.0ns, 1010 = +5.0ns 0011 = +1.5ns, 1011 = +5.5ns 0100 = +2.0ns, 1100 = +6.0ns 0101 = +2.5ns, 1101 = +6.5ns 0110 = +3.0ns, 1110 = +7.0ns 0111 = +3.5ns, 1111 = +7.5ns R/W 0 See Note1 3 PCIF / PCI Clock Skew1 Control Bit3 R/W 1 2 PCIF / PCI Clock Skew1 Control Bit2 R/W 0 1 PCIF / PCI Clock Skew1 Control Bit1 R/W 0 0 PCIF / PCI Clock Skew1 Control Bit0 Skew1 is “Normal” Skew. Delay Ahead 1000 = +0.0ns, 0111 = –0.5ns 1001 = +0.5ns, 0110 = –1.0ns 1010 = +1.0ns, 0101 = –1.5ns 1011 = +1.5ns, 0100 = –2.0ns 1100 = +2.0ns, 0011 = –2.5ns 1101 = +2.5ns, 0010 = –3.0ns 1110 = +3.0ns, 0001 = –3.5ns 1111 = +3.5ns, 0000 = –4.0ns R/W 0 See Note1 Note: 1. PCIF / PCI Clock Skew is Skew1 (= Normal) or Skew1+Skew2 (= Late). |
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