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20 • Jumpers and Connectors
2.2.13 Primary/Secondary IDE Connector (CN7, CN4)
CN7: Primary IDE
CN4: Secondary IDE
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 No connect
DRQ0 / DRQ1 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 / DACK1 29 30 Ground
IRQ14 / IRQ 15
31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
Activity 39 40 Ground
Table 14: IDE Connector Pin Definition