ISP1504A1ETTM STEricsson, ISP1504A1ETTM Datasheet - Page 25

• Manufacturer Part Number: ISP1504A1ETTM
• Manufacturer: STEricsson

Specifications of ISP1504A1ETTM

• Lead Free Status / RoHS Status: Compliant

CD00222688
Product data sheet
Fig 8.
CS_N/PWRDN
DATA[7:0]
CLOCK
Interface behavior with respect to CS_N/PWRDN
STP
NXT
DIR
9.4.1 Driving 5 V on V
9.4.2 Fault detection
9.4 V
9.5 TXCMD and RXCMD
Hi-Z (input)
Hi-Z (input)
The ISP1504x1 supports external 5 V supplies. The ISP1504x1 can control the external
supply using the active-LOW PSW_N open-drain output pin. To enable the external supply
by driving PSW_N to LOW, the link must set the DRV_VBUS_EXT bit in the OTG Control
register to logic 1.
Table 9
Table 9.
The ISP1504x1 supports external V
indicator signal. The indicator signal must be connected to the FAULT pin. To enable the
ISP1504x1 to monitor the digital fault input, the link must set the USE_EXT_VBUS_IND
bit in the OTG Control register and the IND_PASSTHRU bit in the Interface Control
register to logic 1. For details, see
The FAULT input pin is mapped to the A_VBUS_VLD bit in RXCMD. Any changes for the
FAULT input will trigger RXCMD carrying the FAULT condition with A_VBUS_VLD.
Commands between the ISP1504x1 and the link are described in the following
subsections.
DRV_VBUS_EXT
0
1
BUS
power and overcurrent detection
summarizes settings to drive 5 V on V
OTG Control register power control bits
BUS
Power source used
external 5 V V
external 5 V V
Rev. 04 — 20 May 2010
BUS
BUS
Figure
BUS
power source disabled (PSW_N = HIGH)
power source enabled (PSW_N = LOW)
fault detector circuits that output a digital fault
ISP1504A1; ISP1504C1
10.
BUS
Hi-Z (ignored)
Hi-Z (ignored)
Hi-Z (ignored)
Hi-Z (ignored)
t
PWRDN
.
Hi-Z (ignored)
ULPI HS USB OTG transceiver
© ST-ERICSSON 2010. All rights reserved.
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