ISP1507EBSUM STEricsson, ISP1507EBSUM Datasheet - Page 29

• Manufacturer Part Number: ISP1507EBSUM
• Manufacturer: STEricsson

Specifications of ISP1507EBSUM

• Lead Free Status / RoHS Status: Supplier Unconfirmed

CD00222691
Product data sheet
Fig 10. Example of register write, register read, extended register write and extended register read
DATA[3:0]
CLOCK
STP
NXT
DIR
AD indicates the address byte, and D indicates the data byte.
9.6 Register read and write operations
9.7 USB reset and high-speed detection handshake (chirp)
(REGW)
TXCMD
register write
immediate
Figure 10
addressing and extended addressing register operations. Extended register addressing is
optional for links. Note that register operations will be aborted if the ISP1507 unexpectedly
asserts DIR during the operation. When a register operation is aborted, the link must retry
until successful. For more information on register operations, refer to UTMI+ Low Pin
Interface (ULPI) Specification Rev. 1.1.
Figure 11
handshake (chirp). The sequence is shown for hosts and peripherals.
show all RXCMD updates, and timing is not to scale. The sequence is as follows:
1. USB reset: The host detects a peripheral attachment as low-speed if DM is HIGH and
D
as full-speed if DP is HIGH. If a host detects a full-speed peripheral, it resets the
peripheral by writing to the Function Control register (see
XCVRSELECT[1:0] = 00b (high-speed) and TERMSELECT = 0b are then set which
drives SE0 on the bus (DP and DM are connected to ground through 45 Ω). The host
also sets OPMODE[1:0] = 10b for correct chirp transmit and receive. The start of SE0
is labeled T
Remark: To receive chirp signaling, the host must also consider the high-speed
differential receiver output. The host controller must interpret LINESTATE[1:0] as
shown in
shows the register read and write sequences. The ISP1507 supports immediate
shows the sequence of events for USB reset and high-speed detection
TXCMD
(EXTW) AD D
register write
extended
Table
0
.
12.
Rev. 04 — 20 May 2010
TXCMD
(REGR)
register read
immediate
D
ISP1507E; ISP1507F
TXCMD
(EXTW)
register read
extended
AD
ULPI HS USB OTG transceiver
D
Section
© ST-ERICSSON 2010. All rights reserved.
10.1.2).
Figure 11
004aaa761
does not
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