ISP1109BSFE ST-Ericsson Inc, ISP1109BSFE Datasheet - Page 10

• Manufacturer Part Number: ISP1109BSFE
• Description: IC TXRX SERIAL BUS UNIV 32HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1109BSFE

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 3 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3148; ISP1109BS

Philips Semiconductors
Table 4:
9397 750 13355
Product data sheet
Bit
DP_SRP_EN
0
0
0
0
0
1
DP pull-up resistor (R
7.4 Pull-up and pull-down resistors
DP_PULLUP
0
1
1
1
1
X
The ID detector has a switch that can be used to ground pin ID. This switch is controlled
by bit ID_PULLDN of the Resistor Control register, and bits PH_ID_INT and PH_ID_ACK
of the Audio Control register. See
Table 3:
The ID detector also has a switch that is connected between the ID_PU and V
the voltage on the ID pin is higher than the voltage on the V
turned off. Otherwise, the switch will remain on.
The DP pull-up resistor can be enabled or disabled (default enabled) using register
bit DP_PULLUP, if V
be enabled, if V
To support DP Session Request Protocol (SRP), it is required that a B-device can perform
DP pulsing when V
bit DP_SRP_EN is set, the DP pull-up resistor will be enabled irrespective of the status of
V
The pull-up resistor is context variable, as described in document ECN_27%_Resistor .
The value of the pull-up resistor depends on the condition of the USB bus:
DP also implements a weak pull-up resistor (R
bit DP_WKPU_EN of the Resistor Control register; see
connected to the DP pin (SW3 = on), if bit DP_WKPU_EN = 1 and the voltage on V
greater than V
ID_PULLDN
0
0
0
0
1
BUS
•
•
When the bus is idle, the value of the resistor is 900
When the bus is transmitting or receiving, the value of the resistor is 1425
3090
.
UP(DP)
V
X
no
X
X
yes
X
ID pull-down control
BUS
(SW2 = off).
PH_ID_ACK PH_ID_INT
0
0
1
1
X
th(svc)
) control
CC
> V
> V
th(svc)
BUS
.
BUS
th(ISET)
is below the session end threshold (0.2 V to 0.8 V). If register
Rev. 01 — 14 July 2005
is above V
0
1
0
1
X
Pin
V
X
X
LOW
X
HIGH
X
and V
CC(I/O)
Table
th(svc)
BUS
HIGH
> V
. The pull-up resistance on pin DP (R
3.
Switch between ID and GND
off
on for time t
auto-clears to 0
wait for time t
off; bit PH_ID_ACK auto-clears to 0
not defined
on
th(svc)
RESET_N
X
X
X
LOW
HIGH
HIGH
weakUP(DP)
.
USB transceiver with carkit support
Wint(ID)
int(ID)
Figure
) that is controlled by
, turn on the switch for t
then off; bit PH_ID_INT
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
to 1575
REF
4. R
pin, the switch will be
DP pull-up resistor (SW1)
off
off
off
off
on
on
weakUP(DP)
(SW2 = on).
ISP1109
UP(DP)
will be
Wint(ID)
REF
to
pins. If
) must
BUS
9 of 59
then
is