TOBY-L4 series - System Integration Manual
UBX-16024839 - R04
System description
Page 14 of 143
Function
Pin Name
Pin No
I/O
Description
Remarks
U
175
O
USB Super-Speed 3.0
diff. transmitter (+)
90
nominal differential characteristic impedance.
Internal series 100 nF capacitor for AC coupling.
Compliant with
USB Revision 3.0 specification
See section 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.
USB_SSTX–
176
O
USB Super-Speed 3.0
diff. transmitter (–)
90
nominal differential characteristic impedance.
Internal series 100 nF capacitor for AC coupling.
Compliant with
USB Revision 3.0 specification
See section 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.
U
170
I
USB Super-Speed 3.0
diff. receiver (+)
90
nominal differential characteristic impedance.
Compliant with
USB Revision 3.0 specification
See section 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.
USB_SSRX–
171
I
USB Super-Speed 3.0
diff. receiver (–)
90
nominal differential characteristic impedance.
Compliant with
USB Revision 3.0 specification
See section 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.
UART0
RXD
17
O
UART0 data output
1.8 V output, Circuit 104 (RXD) in ITU-T V.24.
Test-Point for diagnostic access recommended.
See section 1.9.2 for functional description.
See section 2.6.2 for external circuit design-in.
TXD
16
I
UART0 data input
1.8 V input, Circuit 103 (TXD) in ITU-T V.24.
Internal active pull-up to
V_INT
.
Test-Point for diagnostic access recommended.
See section 1.9.2 for functional description.
See section 2.6.2 for external circuit design-in.
CTS
15
O
UART0 clear to send
output
1.8 V output, Circuit 106 (CTS) in ITU-T V.24.
See section 1.9.2 for functional description.
See section 2.6.2 for external circuit design-in.
RTS
14
I
UART0 ready to
send input
1.8 V input, Circuit 105 (RTS) in ITU-T V.24.
Internal active pull-up to
V_INT
.
See section 1.9.2 for functional description.
See section 2.6.2 for external circuit design-in.
DSR
10
I/O /
I
GPIO /
External Interrupt
1.8 V GPIO or External Interrupt configurable by uCPU API.
See sections 1.9.2, 1.13 for functional description.
See sections 2.6.1, 2.10 for external circuit design-in.
RI
11
O /
I/O /
I
UART0 ring indicator /
GPIO /
External Interrupt
1.8 V output, Circuit 125 (RI) in ITU-T V.24.
Configurable as GPIO or External Interrupt.
See sections 1.9.2, 1.13 for functional description.
See sections 2.6.1, 2.10 for external circuit design-in.
DTR
13
I/O /
I
GPIO /
External Interrupt
1.8 V GPIO or External Interrupt configurable by uCPU API.
See sections 1.9.2, 1.13 for functional description.
See sections 2.6.1, 2.10 for external circuit design-in.
DCD
12
I/O /
I
GPIO /
External Interrupt
1.8 V GPIO or External Interrupt configurable by uCPU API.
See sections 1.9.2, 1.13 for functional description.
See sections 2.6.1, 2.10 for external circuit design-in.
