AirPrime and HL7588 Product Technical Specification Rev9 0

4116369 Rev 9.0 September 04, 2017 29
Product Technical Specification
Detailed Interface Specifications
3.7. Electrical Information for Digital I/O
The AirPrime HL7548 and HL7588 support two groups of digital interfaces with varying current drain
limits. The following list enumerates these interface groupings and the following table enumerates the
electrical characteristics of each digital interface.
• Group 1 (6mA current drain limit)
▪ GPIO2, GPIO3, GPIO4, GPIO6, GPIO8, GPIO10, GPIO11, GPIO13, GPIO14, GPIO15
• Group 2 (1mA current drain limit)
▪ GPIO1, GPIO5, GPIO7
▪ UART1
▪ JTAG
▪ PCM
Table 15. Digital I/O Electrical Characteristics
Parameter
Symbol
Minimum
Maximum
Remarks
Input Current-High(µA)
I
IH
-
-240
Input Current-Low(µA)
I
IL
-
240
Group 1
DC Output Current-High (mA)
I
OH
-
6
DC Output Current-Low (mA)
I
OL
-6
-
Group 2
DC Output Current-High (mA)
I
OH
-
1
DC Output Current-Low (mA)
I
OL
-1
-
Input Voltage-High(V)
V
IH
1.33
1.90
Input Voltage-Low(V)
V
IL
-0.20
0.34
Output Voltage-High(V)
V
OH
1.45
-
I
OH
= -6mA
V
OH
1.60
-
I
OH
= -0.1mA
Output Voltage-Low(V)
V
OL
-
0.35
I
OL
= 6mA
V
OL
-
0.20
I
OL
= 0.1mA
3.8. General Purpose Input/Output (GPIO)
The AirPrime HL7548 and HL7588 modules provide 13 GPIOs, 3 of which have multiplexes.
Table 16. GPIO Pad Description
Pad Number
Signal Name
Multiplex
I/O
Power Supply Domain
1
GPIO1
I/O
1.8V
10
GPIO2
TRACE_DATA2
I/O
1.8V
40
GPIO7
I/O
1.8V
41
GPIO8
TRACE_CLK
I/O
1.8V
44
GPIO13
I/O
1.8V
46
GPIO6
I/O
1.8V