Casio IT-10M20 Laptop User Manual


 
19
Pin layout for Serial Interface;
Signal layout;
Table 2.2
Pin
no.
Signal Use
Direction of
signal flow
Remark
1 CR CD2# #2 for detecting the Cradle IN
2 RS232C CTS RS232C IN
3 RS232C DCD RS232C IN
4 RS232C DTR RS232C OUT
5 RS232C RTS RS232C OUT
6 RS232C DSR RS232C IN
7 GND GND - See note.
8 USB Client D- For USB Client IN/OUT
9 USB Client D+ For USB Client IN/OUT
10 USB Client PLU For USB power IN
11 USB Host D- For USB Host IN/OUT
12 USB Host D+ For USB Host IN/OUT
13 VBUS For USB power OUT
14 ADP Power for charging battery on the terminal - See note.
15 ADP Power for charging battery on the terminal - See note.
16 ADP Power for charging battery on the terminal - See note.
17 ADP Power for charging battery on the terminal - See note.
18 RS232C RXD RS232C IN
19 RS232C TXD RS232C OUT
20 GND - - See note.
21 GND - - See note.
22 CRSEL0 For recognition of connected device IN
23 CRSEL1 For recognition of connected device IN
24 ADP Power for charging battery on the terminal - See note.
25 ADP Power for charging battery on the terminal - See note.
26 CR CD1# #1 for detecting Cradle IN
Notes:
Since the current at a peak level that flows through the interface reaches as high as 3A, all the “ADP” and
“GND” pins in the table must be used.
Metal frame of the connector must be connected to “GND” pins.
1 2 3 ・ ・ ・
・ ・ ・ 24 25 26
Fig. 2.1