Sharp 802SH Service Manual page 93

802SH
IC1300 VHIBU7880GU-1L (BU7880GU): EXTERNAL INTERFACE
Pin No. Terminal name
1 UART_RXD1
2 BDATA
3 UART_RTS
4 UART_TXD1
5 SCLK
6 BSYNC
7* UART_RXD2
8 BCNT
9 UART_CTS
10 UART_TXD2
11 BSSEL
12 GND
13 VBAT
14 PUEA
15* NC
16* GND
17 UARTSEL
18 UARTMD
19 CPU_USB_D+
20 REG33
21* GND
22* GND
23 HFMD
24 CPUVDD
25 USBD+/RXD
26 PU15
27 BSYNC/SCLK/RTS
28 GND
29* RXANAIN
30 USBMD
31 CPU_USB_D–
32 USBD-/TXD
33 BDATA/CTS
34* TXANAIN
35* RXANAOUT
36* TXANAOUT
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
CONFIDENTIAL
Input/Output
Output UART_RXD1 output
Input BDATA input
Input UART_RTS input
Input UART_TXD1 input
Input SCLK input
Input BSYNC input
Output UART_RXD2 output (Not used)
Input BDATA input control
Output UART_CTS output
Input UART_TXD2 input
Input BSYNC/SCLK switching control
– Earth
– Power supply for switch
Input PU15 control input
– Not used
– Earth (Not used)
Input UART 1 and 2 switching terminal input
Input UART mode switching
Input/Output CPU_USB_D+ input/output
– USB power supply
– Earth (Not used)
– Earth (Not used)
Input Hands free mode switching
– Digital power supply
Input/Output USBD+/RXD switching external input/output
Output PMOS open drain output
Output BSYNC/SCLK/RTS switching external output
– Earth
Input Hands free receiving external input (Not used)
Input USB mode switching
Input/Output CPU_USB_D– inupt/output
Input/Output USBD–/TXD switching external input/output
Input/Output BDATA/CTS switching external input/output
Input Hands free sending input (Not used)
Output Hands free receiving output (Not used)
Output Hands free sending external output (Not used)
Description of terminal
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