15/29 SD-R5112 Rev.1.0
6.2.Signal summary
The physical interface consists of single ended TTL compatible receivers and drivers
communicating through a 50P-connector as shown in Figure 13 and Figure 14 "Interface connector".
6.2.1. Signal Specification
Figure 9 shows the Signal Specifications
N
P
N
Sig. Name
HD0 - HD15
/DASP
/PDIAG
Type Bidirectional
IOL Driver sink current
Min Max
12 mA
VOH Voltage Output High Vdd-0.4 V
VOL Voltage Output Low 0.4 V
IOH=1 mA
IOL=12 mA
VIH Input HIGH Voltage 2.0 V TTL
VIL Input LOW Voltage
ILI -30 µA -150 µA
TTL
Pullup Resistor(Ri)
ILO
Input leakage Current
Output Leakage Current -30 µA -150 µA Pullup Resistor(Ri)
CI Input Capacitance 8 pF
CO Output Capacitance 8 pF
Open Drain
/IOCS16
24 mA
VOL Voltage Output Low 0.4 V IOL=24 mA
8 pF
CO Output Capacitance
Driver sink current
P
N
Receivers/Drivers Caracteristics withoutExternal pullup Resistor
Condition
Rx
NOTE
Rs1=0 OHM
Rs2=33 OHM
HD0-HD15
Rx=10 kOHM
Rs1=0 OHM
Rs2=0 OHM
/PDIAG,
/DASP
IOL
IORDY
2.2 kOHM
1.2 kOHM
IOL Driver sink current 24 mA
VOH Voltage Output High
VOL Voltage Output Low 0.4 V
IOH=400 µA
IOL=24 mA
ILO Output Leakage Current
CO 8 pF
-10 µA 10 µA
Output Capacitance
/HDRQ
/INTRQ
ILO Output Leakage Current -30 µA -150 µA Pullup Resistor(Ri)
P
N
IOL Driver sink current 12 mA
VOH Voltage Output High
VOL Voltage Output Low 0.4 V
IOH=400 µA
IOL=12 mA
ILO Output Leakage Current
CO 8 pF
-10 µA 10 µA
Output Capacitance
/HWR
/HRD
HA0 - HA2
/HCS1/HCS3
/HDAK
VIH Input HIGH Voltage 2.0 V TTL
VIL Input LOW Voltage
ILI -30 µA -150 µA
TTL
Pullup Resistor(Ri)
Input leakage Current
CI Input Capacitance 8 pF
Rx
RESET 100 kOHM VIH Input HIGH Voltage 2.4 V
VIL Input LOW Voltage
ILI -30 µA -150 µA Pullup Resistor(Ri)Input leakage Current
CI Input Capacitance 8 pF
Rs
Rs
Rs
Rs=22 OHM
/INTRQ
/HDRQ
Rs=0 OHM
Rs
Rs=22 OHM
0.8 V
0.8 V
0.6 V
timing
control
timing
control
timing
control
2.4 V
Rs1
1 kOHM
Rs2
Rx=10 kOHM
Rx=infinity
Rs=82 OHM
/HWR, /HA0-2,
/HDAK
Rx=infinity
Rs=120 OHM
/HRD
Rx=10 kOHM
Rs=82 OHM
/HCS1,/HCS3
Vdd-0.4 V
Rx=47 kOHM
Rs=82 OHM