ST STEVAL-STWINBX1 - Figure 39. Core System Board Circuit Schematic (6 of 8)

Figure 39. Core system board circuit schematic (6 of 8)
SD Card
RS485
PC8
PC9
PC10
PC11
PC12
PD2
PG1
Card Removed --> CLOSED
Card Inserted --> OPEN
3V3_S D_485
3V3_S D_485
3V3_S D_4853V3_S D_485
S DMMC_D2
S DMMC_D3
S DMMC_CMD
S DMMC_CK
S DMMC_D0
S DMMC_D1
UART_RX_485
UART_RTS _485
UART_TX_485
S D_DETECT
S D_DETECT
R21 62
S B17 0R
C4
10uF
U18
6
GND
S TR485LVQT
VCC
10
B
9
VL
1
RE
4
DE
3
D
5
A
8
R
2
7
SLR
EP
11
U1
6
CLK_In
EMIF06-MSD02N16
5
CMD_In
4
DAT3_In
3
DAT2_In
2
RDAT3_GND
1
WP /CD
8
DAT1_In
9
DAT1_Ex
10
DAT0_Ex
11
CLK_Ex
12
CMD_Ex
13
DAT3_Ex
7
DAT0_In
14
DAT2_Ex
VCC
15
16
RDATA_VCC
GND
17
C23
10nF
J 1
NU
1
2
3
C3
100nF
R20
62
C22
100nF
uSD
J 12
uS D - 502774-0891
1
DATA2
Cons umo 3V3: 300mA
2
CD/DATA3
3
CMD
VDD
4
CLK
5
VS S
6
7
DATA0
8
DATA1
CD1
9
CD2
10
NUSB16
UM2965 - Rev 1
page 40/58
UM2965
Schematic diagrams