ISP1110VHTS ST-Ericsson Inc, ISP1110VHTS Datasheet - Page 10

• 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
Table 5.
[1]
[2]
ISP1110_2
Product data sheet
SUSPEND
LOW
LOW
HIGH
HIGH
Signal levels on the DP and DM pins are determined by other USB devices and external pull-up or pull-down resistors.
In suspend mode (SUSPEND = HIGH), the differential receiver is inactive and output RCV is always LOW. The resume signaling is
detected through single-ended receivers VP/VPO and VM/VMO.
USB function
OE_N
LOW
HIGH
LOW
HIGH
7.2 Analog USB Transceiver (ATX)
DP and DM
driving/receiving
receiving
driving
high-Z
UART mode cannot be enabled until the voltage on V
threshold (0.8 V to 4.0 V). Therefore, the time required to switch from USB mode to UART
mode is determined by the RC discharge time on the V
V
5 V to 0.8 V). Assume the detection of the UART cable connect or disconnect is very fast
(within 1 ms), the total switching time from the USB cable removal to entering UART mode
can be less than 200 ms. The total switching time from the UART cable removal to
entering USB mode can be less than 200 ms.
When VBUSDET becomes LOW, it is recommended that you wait for 50 ms before
asserting UART_EN. This is because there is no hysteresis built for the VBUSDET
threshold detector.
The time between VBUSDET going HIGH and SOFTCON assertion is 0 ms to 100 ms,
according to Universal Serial Bus Specification Rev. 2.0, Section 7.1.7.3 .
The ISP1110 ATX supports USB full-speed (12 Mbit/s) signaling. The ATX function is
compatible with the ISP1102 transceiver.
Table 6.
Table 7.
[1]
VM/VMO
LOW
LOW
HIGH
HIGH
DP, DM
Differential logic 0
Differential logic 1
SE0
CC(5V0)
RCV* denotes the signal level on output RCV just before the SE0 state occurs. This level is stable during
the SE0 period.
[1]
[1]
= 5.0 V, R = 100 k and C = 1 F, the discharge time is less than 200 ms (from
USB driving function (pin OE_N = LOW)
USB receiving function (pin OE_N = HIGH)
RCV
active
active
inactive
inactive
Rev. 02 — 19 March 2007
[2]
[2]
VP/VPO
LOW
HIGH
LOW
HIGH
VP/VPO
VPO input
VP output
VPO input
VP output
RCV
LOW
HIGH
RCV*
[1]
Table 5
VM/VMO
VMO input
VM output
VMO input
VM output
shows the function of the ATX.
USB transceiver with UART signaling
CC(5V0)
VP/VPO
LOW
HIGH
LOW
BUS
line. Given that
Function
normal driving (differential
receiver active)
receiving
driving during suspend
(differential receiver inactive)
low-power state
drops below the VBUSDET
Data
SE0
differential logic 1
differential logic 0
illegal state
© NXP B.V. 2007. All rights reserved.
VM/VMO
HIGH
LOW
LOW
ISP1110
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