ISP1507EBSUM STEricsson, ISP1507EBSUM Datasheet - Page 24

• Manufacturer Part Number: ISP1507EBSUM
• Manufacturer: STEricsson

Specifications of ISP1507EBSUM

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Table 9.
CD00222691
Product data sheet
Command
type name
Idle
Packet
transmit
Register
write
Register read 11b
TXCMD byte format
Command code
00b
01b
10b
9.4.2 Fault detection
9.5.1 TXCMD
9.5 TXCMD and RXCMD
Table 8.
The ISP1507 supports external V
indicator signal. The indicator signal must be connected to the FAULT pin. To enable 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[3:0] 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.
DRV_VBUS
0
1
X
Command
payload
00 0000b
00 0000b
00 XXXXb
10 1111b
XX XXXXb
10 1111b
XX XXXXb
OTG_CTRL register power control bits
DRV_VBUS_EXT
0
0
1
Table
Rev. 04 — 20 May 2010
Command
name
NOOP
NOPID
PID
EXTW
REGW
EXTR
REGR
Section
9. Any values other than those in
Section
BUS
10.1.3) to logic 1. For details, see
Power source used
internal and external V
internal V
external 5 V V
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.
Register read command with 6-bit immediate address.
fault detector circuits that output a digital fault
10.1.4) and the IND_PASSTHRU bit in the
BUS
ISP1507E; ISP1507F
charge pump is enabled
BUS
supply is enabled
ULPI HS USB OTG transceiver
BUS
power sources are disabled
Table 9
© ST-ERICSSON 2010. All rights reserved.
Figure
are illegal and will
9.
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