ISSC BM77EVB, Руководство пользователя

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© 2014 ISSC Technologies Corp.
29
6. Appendix B: BM77EVB Schematic
U5
RT9179PB
VIN
1
EN
3
ADJ
4
VOUT
5
GND
2
VCC_2V4
C13
10u/16V
C15
10u/16V
R19
30K/1%
1
2
C14
10u/16V
C16
10u/16V
R17
30K/1%
1
2
U6
RT9179PB
VIN
1
EN
3
ADJ
4
VOUT
5
GND
2
R13
1K
1
2
R18
30K/1%
1
2
VCC_HCI
5V
C12
47u/16V
1
2
R16
18K
1
2
EXT_3V3
D-
V B U S
D -
D +
I D
G N D
P1
USBM3121-051-1-BN-R
1
2
3
4
5
6 7
8 9
D+
D1
LED-HR
1
2
R12
56K
1
2
C11
10u/16V
R14
30K/1%
1
2
C10
10u/16V
U3
RT9179PB
VIN
1
EN
3
ADJ
4
VOUT
5
GND
2
UA
R
T
_
T
X
D
HCI_RXD UART_RXD
L e v e l S h ift
RX
C17
0.1u/16V
JP5
JP 1x2
1
2
JP6
JP 1x2
1 2
VCC_HCI
VCC_2V4
U9
SN74AHC1G08DCK
1
3 4
5
2
A
GND Y
VCC
B
C18
0.1u/16V
TX
C22
0.1u/16V
U8
SN74AHC1G08DCK
1
3 4
5
2
A
GND Y
VCC
B
U11
SN74AHC1G08DCK
1
3 4
5
2
A
GND Y
VCC
B
EXT_3V3
HCI_TXD
ON
SW1
SW-3BIT
1
2
3
4
5
6
3V3
R9
4K7
1
2
R7
10
1 2
R8
4K7
1
2
P20
P24
EAN
C3
10u/16V
R2
30K/1%
1
2
C2
10u/16V
R1
68K
1
2
U1
RT9179PB
1
3 4
5
2
VIN
EN ADJ
VOUT
GND
EXT_3V7
5V
FO R C U R R E N T
M E A S U R E M E N T
B A T_ O N
U S B _ O N
C4
10u/16V
VBAT
EXT_3V7
BAT
JP2
JP 1x3
1
2
3
P24
BAT
JP4
JP 1x8
1
2
3
4
5
6
7
8
EAN
P20
UART_RXD
UART_TXD