VIA Technologies COMe-8X90, User Manual

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COMe COMe COMe COMe----8X90 8X90 8X90 8X90 User Manual User Manual User Manual User Manual
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3.10.1.2.2. 3.10.1.2.2. 3.10.1.2.2. 3.10.1.2.2. Bank Interleave Bank Interleave Bank Interleave Bank Interleave
This item is for setting the interleave mode of the SDRAM interface.
Interleaving allows banks of SDRAM to alternate their refresh and access
cycles. One bank will undergo its refresh cycle while another is being
accessed. This improves performance of the SDRAM by masking the refresh
time of each bank.
This feature has 5 options: “SPD”
,
“Non-Page”, “2-Way”, “4-Way” and “8-Way”
.
3.10.1.2.3.
3.10.1.2.3. 3.10.1.2.3.
3.10.1.2.3. Output Impedance Control
Output Impedance Control Output Impedance Control
Output Impedance Control
This feature has 2 options: “Normal” and “Weak”
.
3.10.1.2.4.
3.10.1.2.4. 3.10.1.2.4.
3.10.1.2.4. DDR2 Memory
DDR2 Memory DDR2 Memory
DDR2 Memory Chip ODT [DDR2/DDR
Chip ODT [DDR2/DDR Chip ODT [DDR2/DDR
Chip ODT [DDR2/DDR
This feature has 7 options: “Auto”, “Disabled”,“75 ohm/60 ohm”,“150 ohm/120
ohm”,“50 ohm/40 ohm”,“NA/20 ohm”
and “NA/30 ohm”
.
3.10.1.2.5.
3.10.1.2.5. 3.10.1.2.5.
3.10.1.2.5. DDR3 Dynamic ODT
DDR3 Dynamic ODT DDR3 Dynamic ODT
DDR3 Dynamic ODT
This feature has 4 options: “Auto”,“Disabled”,“R2Q/4” and “R2Q/2”
.
3.10.1.2.6.
3.10.1.2.6. 3.10.1.2.6.
3.10.1.2.6. BA0 SEL
BA0 SEL BA0 SEL
BA0 SEL
This feature has 5 options: “A11”,“A13”,“A15”,“A17“ and “A19”
.
3.10.1.2.7. 3.10.1.2.7. 3.10.1.2.7. 3.10.1.2.7. BA1 SEL BA1 SEL BA1 SEL BA1 SEL
This feature has 5 options: “A12”,“A14”,“A16”,“A18“ and “A20”
.
3.10.1.2.8. 3.10.1.2.8. 3.10.1.2.8. 3.10.1.2.8. BA2 SEL BA2 SEL BA2 SEL BA2 SEL
This feature has 4 options: “A14”,“A15”,“A18“ and “A19”
.
3.10.1.2.9. 3.10.1.2.9. 3.10.1.2.9. 3.10.1.2.9. VR Interleave Address Bit 0 VR Interleave Address Bit 0 VR Interleave Address Bit 0 VR Interleave Address Bit 0
This feature has 4 options: “A15”,“A17”,“A19“ and “A21”
.
3.10.1.2.10.
3.10.1.2.10. 3.10.1.2.10.
3.10.1.2.10. VR Interleave Address Bit 1
VR Interleave Address Bit 1 VR Interleave Address Bit 1
VR Interleave Address Bit 1
This feature has 4 options: “A14”,“A16”,“A18“ and “A20”
.
3.10.1.2.11.
3.10.1.2.11. 3.10.1.2.11.
3.10.1.2.11. Virtual Rank Interleave
Virtual Rank Interleave Virtual Rank Interleave
Virtual Rank Interleave
This feature has 2 options: “Auto” and “Disabled”
.
3.10.1.2.12. 3.10.1.2.12. 3.10.1.2.12. 3.10.1.2.12. BA Scramble BA Scramble BA Scramble BA Scramble
This feature has 2 options: “Enabled” and “Disabled”
.