ISP1507DBSUM STEricsson, ISP1507DBSUM Datasheet - Page 22

• Manufacturer Part Number: ISP1507DBSUM
• Manufacturer: STEricsson

Specifications of ISP1507DBSUM

• Lead Free Status / RoHS Status: Compliant

Table 8.
CD00222690
Product data sheet
Command
type name
Idle
Packet
transmit
Register
write
Register
read
TXCMD byte format
Command code
DATA[7:6]
00b
01b
10b
11b
9.5.1 TXCMD
9.5.2 RXCMD
9.5 TXCMD and RXCMD
The ISP1507 supports external V
indicator signal. The indicator signal must be connected to the V
the ISP1507 to monitor the digital fault input, the link must set the USE_EXT_VBUS_IND
bit in the OTG_CTRL register (see
INTF_CTRL register (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 ISP1507 and the link are described in the following subsections.
By default, the link must drive the ULPI bus to its idle state of 00h. To send commands and
USB packets, the link drives a nonzero value on DATA[7:0] to the ISP1507 by sending a
byte called TXCMD. Commands include USB packet transmissions, and register reads
and writes. Once the TXCMD is interpreted and accepted by the ISP1507, the NXT signal
is asserted and the link can follow up with the required number of data bytes. The TXCMD
byte format is given in
result in undefined behavior.
Various TXCMD packet and register sequences are shown in later sections.
The ISP1507 communicates status information to the link by asserting DIR and sending
an RXCMD byte on the data bus. The RXCMD data byte format is given in
The ISP1507 will automatically send an RXCMD whenever there is a change in any of the
RXCMD data fields. The link must be able to accept an RXCMD at any time; including
single RXCMDs, back-to-back RXCMDs, and RXCMDs at any time during USB receive
packets when NXT is LOW. An example is shown in
refer to UTMI+ Low Pin Interface (ULPI) Specification Rev. 1.1.
Command
payload DATA[5:0]
00 0000b
00 0000b
00 XXXXb
10 1111b
XX XXXXb
10 1111b
XX XXXXb
Table
Rev. 04 — 20 May 2010
Section
Command
name
NOOP
NOPID
PID
EXTW
REGW
EXTR
REGR
8. Any values other than those in
BUS
10.1.3) to logic 1. For details, see
Section
fault detector circuits that output a digital fault
Register read command with 6-bit immediate address.
Command description
No operation. 00h is the idle value of the data bus. The
link must drive NOOP by default.
Transmit USB data that does not have a PID, such as
chirp and resume signaling. The ISP1507 starts
transmitting only after accepting the next data byte.
Transmit USB packet. DATA[3:0] indicates USB packet
identifier PID[3:0].
Extended register write command (optional). The 8-bit
address must be provided after the command is
accepted.
Register write command with 6-bit immediate address.
Extended register read command (optional). The 8-bit
address must be provided after the command is
accepted.
ULPI HS USB host and peripheral transceiver
10.1.4) and the IND_PASSTHRU bit in the
ISP1507C; ISP1507D
Figure
6. For details and diagrams,
Table 8
BUS
/FAULT pin. To enable
© ST-ERICSSON 2010. All rights reserved.
Figure
are illegal and may
Table
7.
9.
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