Pin
#
Signal Name
Signal Type
Signal Leve
l
Description
Currently Configured For
Other Uses
33
DS
R
Output
CMOS
RS-232
Data Set Ready
(CMOS Levels)
RS-232 Flow Control
34
RT
S
Input
CMOS
RS-232
Ready To Send
(CMOS Levels)
R
S-232 Flow Control
35
DT
R
Input
CMOS
RS-232
Data Terminal Ready
(CMOS Levels)
RS-232 Flow Control
36
CT
S
Output
CMOS
RS-232
Clear To Send
(CMOS Levels)
RS-232 Flow Control
37
SPKR_P
Differential Output
2 Vpp out with RL=32 ohm, CL=1000 pF
38
SPKR_N
Differential Output
39
MIC1_P
Differential Input
1.6 Vpp in, 10
Kohm input impedance
40
MIC1_N
Differential Input
VDD for CMOS = 3.0 Vdc Outputs are 2.4 Vdc = 1, 0.4 Vdc = 0
*** Bi-directional Parallel Port was put in for future expansion and is not currently supported by SW.
