ISP1105WTS STEricsson, ISP1105WTS Datasheet - Page 7

• Manufacturer Part Number: ISP1105WTS
• Manufacturer: STEricsson

Specifications of ISP1105WTS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

7. Functional description
ISP1105_1106_10
Product data sheet
7.1 Function selection
7.2 Operating functions
Table 4.
[1]
[2]
[3]
Table 5.
Table 6.
Table 7.
[1]
[2]
SUSPND
L
L
H
H
FSE0
L
L
H
H
VMO
L
L
H
H
(D+, D−)
Differential logic 0
Differential logic 1
SE0
Signal levels on (D+, D−) are determined by other USB devices and external pull-up/down resistors.
In ‘suspend’ mode (SUSPND = HIGH) the differential receiver is inactive and output RCV is always LOW.
Out-of-suspend (‘K’) signalling is detected via the single-ended receivers VP and VM.
During suspend, the slew-rate control circuit of low-speed operation is disabled. The (D+, D−) lines are still
driven to their intended states, without slew-rate control. This is permitted because driving during suspend
is used to signal remote wake-up by driving a ‘K’ signal (one transition from idle to ‘K’ state) for a period of
1 to 15 ms.
VP = VM = H indicates the sharing mode (V
RCV* denotes the signal level on output RCV just before SE0 state occurs. This level is stable during the
SE0 period.
Function table
Driving function (pin OE = L) using single-ended input data interface for ISP1105
(pin MODE = L)
Driving function (pin OE = L) using differential input data interface for ISP1105
(pin MODE = H) and ISP1106
Receiving function (pin OE = H)
OE
L
H
L
H
VO
L
H
L
H
VPO
L
H
L
H
Rev. 10 — 28 September 2009
(D+, D−)
driving and
receiving
receiving
driving
high-Z
[1]
[1]
RCV
active
active
inactive
inactive
Data
differential logic 0
differential logic 1
SE0
SE0
Data
SE0
differential logic 1
differential logic 0
illegal state
RCV
L
H
RCV*
CC(5.0)
[2]
[2]
[2]
and V
VP/VM
active
active
active
active
reg(3.3)
VP
L
H
L
are disconnected).
[1]
Advanced USB transceivers
Function
receiver active)
receiving
(differential receiver inactive)
normal driving (differential
driving during ‘suspend’
low-power state
ISP1105/1106
© ST-ERICSSON 2009. All rights reserved.
VM
H
L
L
[1]
[3]
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