ISP1110VHTS ST-Ericsson Inc, ISP1110VHTS Datasheet - Page 8

• Manufacturer Part Number: ISP1110VHTS
• Description: IC USB TXRX W/UART 16-HBCC
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1110VHTS

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 4 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-HBCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3149-2; ISP1110VH-G

NXP Semiconductors
ISP1110_2
Product data sheet
7.1.2 UART mode
For the flowchart, see
When the ISP1110 is in UART mode, the DP and DM driver is powered by 2.8 V. The
ISP1110 works as a level shifter between these pairs of pins:
When the ISP1110 is in UART mode, the USB differential receiver is disabled. The
SUSPEND and SOFTCON input pins are ignored. The RCV pin is driven LOW. The
VP/VPO and VM/VMO pins are driven LOW, if OE_N is HIGH. The VP/VPO and VM/VMO
pins are 3-state LOW, if OE_N is LOW.
The ISP1110 is in UART mode when V
V
A short description of the UART detection sequence is:
For the flowchart, see
3. If the phone is switched off (V
4. If the phone is switched on (V
5. The phone processor detects that pin VBUSDET is HIGH. If the phone system
6. The ISP1110 will enable the DP pull-up resistor (R
7. The PC detects DP at the HIGH level and starts the USB full-speed enumeration.
8. The PC loads the driver for the phone, if enumeration is successful.
1. The phone is switched on (V
2. If V
3. The ISP1110 will enter UART signaling mode, if UART_EN is HIGH.
•
•
CC(I/O)
ISP1110 remain at high-impedance and the PC will not detect any device attachment.
VBUSDET pin to a HIGH level.
software is ready for USB operation, the phone processor will assert pin SOFTCON.
From TXD (V
From DP (2.8 V level) to RXD (V
2.8 V.
BUS
and V
is off, the ISP1110 will drive VBUSDET to a LOW level. The ATX is powered by
CC(UART)
CC(I/O)
Section
Section
must be on.
Rev. 02 — 19 March 2007
level) to DM (2.8 V level).
7.1.3.
7.1.3.
CC(I/O)
CC(I/O)
CC(I/O)
CC(I/O)
CC(5V0)
is present).
is not present), then the DP and DM pins of the
is present), then the ISP1110 will drive the
level).
< V
USB transceiver with UART signaling
CC(5V0)th
PU(DP)
and pin UART_EN is HIGH.
).
© NXP B.V. 2007. All rights reserved.
ISP1110
7 of 25