ISP1302HN-T ST-Ericsson Inc, ISP1302HN-T Datasheet - Page 10

• Manufacturer Part Number: ISP1302HN-T
• Description: IC USB OTG TRANSCEIVER 24HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1302HN-T

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 3 V ~ 4.5 V
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
Table 3.
ISP1302_1
Product data sheet
SESS_VLD
0
0
0
1
1
1
ID pin status for various applications
ID_FLOAT
1
0
0
0
0
1
7.4 ID detector
In normal power mode (when both V
the condition of the ID line and can differentiate between the following conditions:
In power-down mode, only ID_FLOAT detector is active and can wake-up the chip. The
remaining detectors are turned off.
Table 3
pins.
The recommended procedure to detect the ID status using software is:
The ID detector has a switch that can be used to ground pin ID. This switch is controlled
by bit ID_PULLDN of the OTG Control register, and bits PH_ID_INT and PH_ID_ACK of
the Audio Control register. See
1. When nothing is connected, ID is floating and ID_FLOAT = 1. The chip can be set in
2. Enable the ID_FLOAT (rising edge and falling edge) and SESS_VLD (rising edge)
3. If a plug that causes a change in ID_FLOAT or SESS_VLD is inserted, an interrupt
4. The software waits for sometime, for example: 100 ms, to allow mechanical
5. The software reads the Interrupt Source register and the OTG Status register, and
6. The device type is determined according to
•
•
•
•
•
The ID pin is floating (bit ID_FLOAT = 1).
The ID pin is shorted to ground (bit ID_GND = 1).
The ID pin is connected to ground through resistor R
ID_102K = 1).
The ID pin is connected to ground through resistor R
ID_200K = 1).
The ID pin is connected to ground through resistor R
ID_440K = 1).
power-down mode.
interrupts.
occurs. Interrupt Latch register bit ID_FLOAT or SESS_VLD is set.
debounce.
checks bits SESS_VLD, ID_GND, ID_102K, ID_200K and ID_440K.
ID_GND
0
1
0
0
0
0
shows the type of device connected, depending on the status of the ID and V
ID_102K
0
0
1
0
0
0
Rev. 01 — 24 May 2007
Table
ID_200K
X
0
0
1
0
0
CC
4.
and V
ID_440K
X
0
0
0
1
0
USB OTG transceiver with carkit support
CC(I/O)
Table
are present), the ID detector senses
3.
Device connected
nothing connected
OTG A-device
phone accessory
charger type 1
charger type 2
carkit or PC
DN(ID)
DN(ID)
DN(ID)
= 102 k (bit
= 200 k (bit
= 440 k (bit
© NXP B.V. 2007. All rights reserved.
ISP1302
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