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4. Trouble Shooting
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4.18.1 Multi-Port Switch 1
Signal Connection
Control
Headset
REMOTE_ADC
REMOTE_INT
Low
High
UART1
RXD
TXD
High
High
USB
USB_DM
USB_DP
X
Low
Application
MULTIPORT1
MULTIPORT0
JACK_DETECT
VBUS_USB
U405
FB405
FB401
GND
IN
OUT
Pin7
Pin6
Pin6
Pin7
Pin7
Pin6
Pin6
MULTI-PORT SWITCH 1
Pin7
Pin6
Pin7
10K
R432
1.5K
R433
10K
R425
10K
R430
B
C
E
Q401
RN1307
2V72_IO
0.1u
C429
10K
R429
22
R434
GND
6
2
IN1-2
10
IN3-4
NC1
1
5
NC2
NC3
9
13
NC4
15
NO1
3
NO2
NO3
7
11
NO4
17
PGND
V+
14
U405
ISL8499IRZ-T
COM1
16
COM2
4
8
COM3
COM4
12
22
R437
VBAT
VBAT
USB_DP
USB_DM
TXD_0
RXD_0
VBUS_USB
USB_PU
MULTI_PORT_0
MULTI_PORT_1
JACK_DETECT
REMOTE_INT
REMOTE_ADC
Summary of Contents for Chocolate KE800
Page 1: ...Service Manual Model KE800 Service Manual KE800 Date January 2007 Issue 1 0 ...
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Page 82: ...6 SW Download 83 KE800 KE800P40 7 V10g 9 Download complete ...
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Page 96: ... 97 8 PCB LAYOUT ...
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