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GX30
6 – 14
CONFIDENTIAL
IC502 VHIBU7870KN-1L (BU7870KN): USB CONTROLLER
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Terminal name
Input/Output
Description of terminal
1
MODESEL1
Input
Operation mode switching 1
2
MODESEL2
Input
Operation mode switching 2
3
UART_RXD
Output
UART_RXD output
4
UART_TXD
Input
UART_TXD input
5
CPUVDD
–
Digital power supply
6
UART_RTS
Input
UART_RTS input
7
BSYNC
Input
BSYNC input
8
UART_CTS
Output
UART_CTS output
9
BDATA
Input
BDATA input
10
BCNT
Input
BDATA input control
11
MODESEL3
Input
Operation mode switching 3
12
TXANAOUT
Output
Hands free sending external output
13
RXANAIN
Input
Hands free receiving external input
14
GND1
–
Ground
15
RXANAOUT
Output
Hands free receiving output
16
TXANAIN
Input
Hands free sending input
17*
NC
–
Not used
18
BDATA/CTS
Input/Output
BDATA/CTS switching external input/output
19
BSYNC/RTS
Output
BSYNC/RTS switching external output
20
USBD-/TXD
Input/Output
USBD-/TXD switching external input/output
21
GND2
–
Ground
22
USBD+/RXD
Input/Output
USBD+/RXD switching external input/output
23
CP
Input/Output
CP input/output
24
CPU_USB_D-
Input/Output
CPU_USB_D- input/output
25
REG33
–
Power supply voltage for USB
26
PU15
Output
PMOS open drain output
27
PUEA
Input
PU15 control input
28
GND3
–
Ground
20
21
14 GND1
GND2
MODESEL1
MODESEL2
U
A
R
T_RXD
U
A
R
T_TXD
U
A
R
T_R
TS
BSYNC
CPUVDD
USBD-/TXD
BSYNC/R
TS
BD
AT
A/CTS
NC
TXANAIN
RXANA
OUT
USBD+/RXD
CP
CPU_USB_D-
REG33
PU15
PUEA
GND3
RXANAIN
TXANAOUT
MODESEL3
BCNT
BDATA
UART_CTS
19
15
16
17
MODE 0,1,2: ON
MODE 3,5: OFF
CPUVDD
CPUVDD
CPUVDD
CPUVDD
DEC
H: ON
L: OFF
CPUVDD
CPUVDD
CPUVDD
CPUVDD
CPUVDD
CPUVDD
MODE 0,1,2: OFF
MODE 3,5: ON
MODE 0,2,3: OFF
MODE 1,5: ON
MODE 0,2,3,5: OFF
MODE 1: ON
MODE 0,2,3,5: L
MODE 1: H
MODE
0,2,3,5:
L
MODE
1:
H
MODE
0,2,3,5:
L
MODE
1:
H
MODE
0,1,3,5:
H
MODE
2:
L
MODE
0,1,5:
H
MODE
2,3:
L
MODE
0,1,5:
H
MODE
2,3:
L
MODE
0,1,5:
OFF
MODE
2,3:
ON
MODE
0,1,3,5:
H
MODE
2:
L
MODE
0,1,3,5:
OFF
MODE
2:
ON
10K
10K
MODE 0,1,2: ON
MODE 3,5: OFF
18
13
12
11
10
9
8
7
6
4
2
1
3
5
22
23
24
25
26
27
28
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