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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