Ublox LISA-U100, Руководство по интеграции

Страница: 177 / 190

LISA-U series - System Integration Manual
UBX-13001118 - R17 Advance information Appendix
Page 177 of 190
LISA-U1 series LISA-U2 series
No Name Description Name Description Remarks for Migration
10 RI UART ring indicator
output RI UART ring indicator
output Circuit 125 (RI) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Output driver strength = 4 mA

LISA-U2 series:
o
Output driver strength = 2 mA
11 DCD UART data carrier
detect output DCD UART data carrier
detect output Circuit 109 (DCD) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Output driver strength = 4 mA

LISA-U2 series:
o
Output driver strength = 2 mA
12 DTR UART data terminal
ready input DTR UART data terminal
ready input Circuit 108/2 (DTR) in ITU-T V. 24, 1.8V typ.

LISA-U1 series:
o
Internal active pull-up = -110 µA

LISA-U2 series:
o
Internal active pull-up = -125 µA
13 RTS UART ready to send
input RTS UART ready to send
input Circuit 105 (RTS) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Internal active pull-up = -60 µA

LISA-U2 series:
o
Internal active pull-up = -240 µA
14 CTS UART clear to send
output CTS UART clear to send
output Circuit 106 (CTS) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Output driver strength = 4 mA

LISA-U2 series:
o
Output driver strength = 6 mA
15 TXD UART transmitted
data input TXD UART transmitted
data input Circuit 103 (TxD) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Internal active pull-up = -60 µA

LISA-U2 series:
o
Internal active pull-up = -240 µA
16 RXD UART received data
output RXD UART received data
output Circuit 104 (RxD) in ITU-T V.24, 1.8V typ.

LISA-U1 series:
o
Output driver strength = 4 mA

LISA-U2 series:
o
Output driver strength = 6 mA
17 GND Ground GND Ground
18 VUSB_DET USB detect input VUSB_DET USB detect input No difference:
Input for VBUS (5 V typical) USB supply sense.
19 PWR_ON Power-on input PWR_ON Power-on input PWR_ON switch-on low pulse time difference:

LISA-U1 series:
o
L-level pulse time = 5 ms min

LISA-U2 series:
o
L-level pulse time = 50 µs min / 80 µs max
PWR_ON switch-off low pulse time difference:

LISA-U1 series:
o
Switch-off by PWR_ON not supported

LISA-U2 series:
o
L-level pulse time = 1 s min
PWR_ON operating voltage difference:

LISA-U1 series:
o L-level input = -0.30 V min / 0.65 V max
o
H-level input = 2.00 V min / 4.20 V max
o
External pull-up (e.g. to V_BCKP) required

LISA-U2 series:
o
L-level input = -0.30 V min / 0.65 V max
o
H-level input = 1.50 V min / 4.40 V max
o
External pull-up (e.g. to V_BCKP) required