ISP1506BBS-T ST-Ericsson Inc, ISP1506BBS-T Datasheet - Page 22

• Manufacturer Part Number: ISP1506BBS-T
• Description: IC ULPI TRANSCEIVER 24-HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1506BBS-T

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 3 V ~ 3.6 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
ISP1506A_ISP1506B_1
Product data sheet
Fig 6. Power-up and reset sequence required before the ULPI bus is ready for use
internal REG1V8
internal POR
t1 = V
t2 = ULPI pads detect REG1V8 rising above the REG1V8 regulator threshold and are not in 3-state. These pads may drive
either LOW or HIGH. It is recommended that the link ignores the ULPI pins status during t
t3 = The POR threshold is reached and a POR pulse is generated. After the POR pulse, ULPI pins are driven to a defined
level. DIR is driven to HIGH and the other pins are driven to LOW.
t4 = The 19.2 MHz or 26 MHz input clock starts. This clock may be started any time.
t5 = The internal PLL is stabilized after t
is stabilized after t
LOW. The DIR pin will remain LOW before the link issues a RESET command to the ISP1506.
t6 = The power-up sequence is completed and the ULPI bus interface is ready for use.
DATA[3:0]
REG1V8
V
detector
CLOCK
CC(I/O)
XTAL1
V
NXT
STP
DIR
CC
CC
9.3.1 Interface protection
and V
CC(I/O)
t1
By default, the ISP1506 enables a weak pull-up resistor on STP. If the STP pin is
unexpectedly HIGH at any time, the ISP1506 will protect the ULPI interface by enabling
weak pull-down resistors on DATA[3:0].
startup(PLL)
are applied to the ISP1506. The ISP1506 regulator starts to turn on.
t
PWRUP
t2
from POR. The CLOCK pin starts to output 60 MHz. The DIR pin will transition from HIGH to
t3
t4
startup(PLL)
t
startup(PLL)
Rev. 01 — 30 May 2007
. If the 19.2 MHz or 26 MHz clock is started before POR, the internal PLL
t5
internal clocks stable
RESET command
TXCMD
D
ISP1506A; ISP1506B
internal reset
ULPI HS USB OTG transceiver
PWRUP
.
© NXP B.V. 2007. All rights reserved.
RXCMD
update
004aaa886
bus idle
t6
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