– 13 –
(4) Open-drain output signals ( –IOCS16)
• Low level
: 0 to 0.4VDC (output sink current 12mA)
• Maximum output current at high impedance
: ±25µA
(5) Input signals (–RESET, –DIOW, –DIOR, –CSEL, –DMACK, DA0 to DA2, –CS0, –CS1)
(a) Input signal level
• Low level
: 0 to 0.8VDC
• High level
: 2.0 to 5.25VDC
• Hysteresis (excluding RESET, –CSEL)
: possessed
• Maximum input current
: ±25µA (excluding the pull-up resistance)
• Pull-up resistance
–RESET
: 10k
Ω
–CSEL
: 47k
Ω
• Series resistance (–RESET, –DIOW, –DIOR, –DMACK, DA0 to DA2, –CS0, –CS1)
: 82
Ω
14.3 Input/Output Signals
Refer to Table
Among the following signals, the input signal refers to the signal input to the CD-RW drive and the output
signal refers to the signal output from the CD-RW drive and the input/output signal refers to the bidirectional
signal.
(Table 14.3-1) IDE Interface signal summary (Sheet 1 of 2)
Signal
Description
Direction
–CSEL
Cable select
IN
–CS0
Chip select0
IN
–CS1
Chip select1
IN
DD0
Data bus bit 0
IN/OUT
DD1
Data bus bit 1
IN/OUT
DD2
Data bus bit 2
IN/OUT
DD3
Data bus bit 3
IN/OUT
DD4
Data bus bit 4
IN/OUT
DD5
Data bus bit 5
IN/OUT
DD6
Data bus bit 6
IN/OUT
DD7
Data bus bit 7
IN/OUT
DD8
Data bus bit 8
IN/OUT
DD9
Data bus bit 9
IN/OUT
DD10
Data bus bit 10
IN/OUT
DD11
Data bus bit 11
IN/OUT
DD12
Data bus bit 12
IN/OUT
DD13
Data bus bit 13
IN/OUT
DD14
Data bus bit 14
IN/OUT
DD15
Data bus bit 15
IN/OUT
–DASP
Device active/Slave present
IN/OUT
