ISP1506ABS ST-Ericsson Inc, ISP1506ABS Datasheet - Page 28

• Manufacturer Part Number: ISP1506ABS
• Description: IC ULPI TRANSCEIVER 24-HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1506ABS

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 1.65 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
• Other names: 568-3156

NXP Semiconductors
ISP1506A_ISP1506B_1
Product data sheet
9.5.2.3 RxEvent encoding
OTG devices: When an OTG device is configured as an OTG A-device, it must be able to
provide a minimum of 8 mA on V
there is no need for an overcurrent detection circuit because the internal A_VBUS_VLD
comparator is sufficient. If the OTG A-device provides more than 100 mA on V
overcurrent detector must be used and "Standard USB Host Controllers" applies. The
OTG A-device also uses SESS_VLD to detect when an OTG A-device is initiating V
pulsing SRP.
When an OTG device is configured as an OTG B-device, SESS_VLD must be used to
detect when V
when V
pulsing SRP.
The RxEvent field (see
packets received on the USB bus. RxActive and RxError are defined in
Transceiver Macrocell Interface (UTMI) Specification Ver.
defined in
following subsections.
Table 15.
RxActive:
RxActive event to the link. An RxActive event can be communicated using two methods.
The first method is for the ISP1506 to simultaneously assert DIR and NXT. The second
method is for the ISP1506 to send an RXCMD to the link with the RxActive field in
RxEvent bits set to logic 1. The link must be able to detect both methods. RxActive frames
the receive packet from the first byte to the last byte.
The link must assume that RxActive is set to logic 0 when indicated in an RXCMD or when
DIR is de-asserted, whichever occurs first.
The link uses RxActive to time high-speed packets and ensure that bus turnaround times
are met. For more information on the USB packet timing, see
RxError:
de-asserts NXT and sends an RXCMD with the RxError field set to logic 1. The received
packet is no longer valid and must be dropped by the link.
HostDisconnect:
HostDisconnect is valid only when the ISP1506 is configured as a host (both
DP_PULLDOWN and DM_PULLDOWN are set to logic 1), and indicates to the Host
Controller when a peripheral is connected or disconnected. The Host Controller must
enable HostDisconnect by setting the HOST_DISCON_R and HOST_DISCON_F bits in
the USB Interrupt Enable Rising Edge and USB Interrupt Enable Falling Edge registers,
respectively. Changes in HostDisconnect will cause the PHY to send an RXCMD to the
link with the updated value.
Value
00
01
11
10
BUS
When the ISP1506 has detected an error while receiving a USB packet, it
Ref. 4 “UTMI+ Specification Rev.
Encoded USB event signals
When the ISP1506 has detected a SYNC pattern on the USB bus, it signals an
has dropped to a LOW level, allowing the B-device to safely initiate V
BUS
is at a sufficient level for operation. SESS_END must be used to detect
HostDisconnect is encoded into the RxEvent field of the RXCMD.
RxActive
0
1
1
X
Table
Rev. 01 — 30 May 2007
15) of the RXCMD informs the link of information related
BUS
. If the OTG A-device provides less than 100 mA, then
1.0”. A short definition is also given in the
RxError
0
0
1
X
ISP1506A; ISP1506B
ULPI HS USB OTG transceiver
1.05”. HostDisconnect is
Section
HostDisconnect
0
0
0
1
9.8.1.
© NXP B.V. 2007. All rights reserved.
Ref. 5 “USB 2.0
BUS
BUS
, an
28 of 79
BUS