Freescale Semiconductor TWR-K65F180M, Руководство пользователя

Страница: 10 / 18

TWR-K65F180M User's Guide , Rev. 0 , 05/2015
10 Freescale Semiconductor, Inc.
TP_LED2R
PTB18 TSI0_CH11
BRD_PAD2 BRD_PAD1
PTA28
PTB19 TSI0_CH12
TP_LED1R
TP_LED2RR
TP_LED1RR
PTA29
V_BRD
V_BRD
PTB[0..23]{4,6,7,8}
PTA[0..31]{4,5,6,7,8}
R163 0
R159 0
TP16
DNP
R64
1K
5%
R66
1K
5%
TP17
DNP
D8
L ELECTRODE
A
C
1
R63
0
R164 0
D9
LED2_ELECTRODE
A
C
1
Figure 6. Touch pad circuitry
3.13 USB interface
The K65FN2M0VMI18 features a high-, full-, and low-speed USB controller with on-chip HS USB
PHY, and a full-, low-speed USB controller with on-chip USB PHY. The TWR-K65F180M board
enables the USB to be host or device in standalone mode or with connection to a TWR-SER1 board in a
complete tower kit. FS USB controller DP/DM signals can be selectively routed to the MicroUSB
connector J15 or the MiniUSB connector J14 on a TWR-SER1 board by changing the 0 ohm resistor to
connect either to A or B as shown in the following schematic. This is to help reduce on-board signal
stub. The HS USB controller signal DP/DM signals can only be connected to on-board MicroUSB
connector J15.
default A
Place R188 very close to R190_B
USB HS
4} MCU_USB1_HS_DN{
{4} MCU_USB1_HS_DP
ELEV_USB_DN{8}
ELEV_USB_DP{8}
MCU_USB0_FS_DN {4}
MCU_USB0_FS_DP {4}
R187 0
A B
R190
0
R188 0
A B
R189
0
default A
Place R187 very close to R189_B
USB FS
Figure 7. USB signal routing
3.14 Secure digital card slot
A Micro SD card slot is available on the TWR-K65F180M connected to the SD host controller (SDHC)
signals of the MCU. This slot will accept standard format SD memory cards. See
Table 5 “ Error!
Reference source not found.
” for connection details.