Kenwood TH-D74E Service Manual page 23

2.3.8 Micro USB Socket J700
Pin No. Pin Name I/O
1 V BUS I
2 DM I/O USB D-
3 DP I/O USB D+
4 NC -
5 GND I
2.3.9 micro SD Slot J701
Pin No. Pin Name I/O
1 DAT2 I/O Data line is bidirectional signal.
2 DAT3 I/O Data line is bidirectional signal.
3 CMD I/O Command is bidirectional signal.
4 VDD O
5 CLK I/O Clock is a host to card signal.
6 VSS -
7 DAT0 I/O Data line is bidirectional signal.
8 DAT1 I/O Data line is bidirectional signal.
- Card I
Detect SW
- COMMON -
2.3.10 Microphone Jack J880
Pin No. Pin Name I/O
1 PTT I
2 33M O
3 MIC I
2.3.11 Speaker Jack J880
Pin No. Pin Name I/O
6 SPG I
7 SP O
8 REM I
2.3.12 DC Jack J576
Pin No. Pin Name I/O
1 + I
2 GND I
Function
V BUS sense input
NC
GND
Description
Host and card drivers operate in push pull mode.
Host and card drivers operate in push pull mode.
Host and card drivers operate in push pull mode.
3.3V power supply output.
CLK operates in push pull mode.
GND
Host and card drivers operate in push pull mode.
Host and card drivers operate in push pull mode.
Normally open.
microSD is inserted ON.
microSD is inserted OFF.
-
Function
PTT
3.3V output
External Microphone input
Function
Speaker GND
SP AF output
Remote key Detection
Function
Voltage Supply
GND
Rating and Condition
Input voltage 4.4-5.25V
Full-Speed(12Mbps) VIH>2.0V,VIL<0.8V
Included Pull up resistors
Full-Speed(12Mbps) VIH>2.0V,VIL<0.8V
-
GND
VIH:2.0 to 3.6V VIL:-0.3 to 0.8V
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max 0.4V
VIH:2.0 to 3.6V VIL:-0.3 to 0.8V
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max 0.4V
VIH:2.0 to 3.6V VIL:-0.3 to 0.8V
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max 0.4V
Output Voltage:3.267 to 3.333V(typ3.3V)
Maximum Current max 0.2A
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max0.4V Clock frequency
(High Speed MODE) MAX 50MHz
-
VIH:2.0 to 3.6V VIL:-0.3 to 0.8V
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max 0.4V
VIH:2.0 to 3.6V VIL:-0.3 to 0.8V
VOH(Io=4mA):2.4 to 3.6V
VOL(Io=4mA):max 0.4V
VIH:2.0 to 3.6V
VIL:-0.3 to 0.8V
-
VIH:2.0 to 3.6V Standby
VIL:-0.3 to 0.4V Transmit
VOH(Io=7.5mA max):2.4 to 3.6V
2k ohm terminated
GND
Output impedance 8 ohm or higher.
Ex)SMC-34's speaker impedance is 15.5 ohm
PF1:3.9k±5%.PF2:10k±5%.PF3:27k±5%.
Lock:less than 10 ohm
Voltage:11.0-15.9V
GND
Rating and Condition
Rating and Condition
Rating and Condition
Rating and Condition
(No.RA044<Rev.001>)1-23