ISP1507D1HNUM STEricsson, ISP1507D1HNUM Datasheet - Page 26

• Manufacturer Part Number: ISP1507D1HNUM
• Manufacturer: STEricsson

Specifications of ISP1507D1HNUM

• Lead Free Status / RoHS Status: Compliant

CD00269906
Product data sheet
10.5.2.4 RxEvent encoding
OTG devices:
that supplies less than 100 mA on V
V
provides more than 100 mA on V
“Standard USB host controllers” on page 25
SESS_VLD to detect when an OTG B-device is initiating V
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 USB 2.0
Transceiver Macrocell Interface (UTMI) Specification Ver. 1.05. HostDisconnect is defined
in UTMI+ Specification Rev. 1.0. A short definition is also given in the following
subsections.
Table 15.
RxActive:
an RxActive event to the link. An RxActive event can be communicated using two
methods. The first method is for the ISP1507D1 to simultaneously assert DIR and NXT.
The second method is for the ISP1507D1 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 deasserted, 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:
deasserts 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packet is no longer valid and must be dropped by the link.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 ISP1507D1 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_INTR_EN_R_E and USB_INTR_EN_F_E 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
pin. The internal A_VBUS_VLD comparator can be used. If the OTG A-device
BUS
When the ISP1507D1 has detected an error while receiving a USB packet, it
Encoded USB event signals
When the ISP1507D1 has detected a SYNC pattern on the USB bus, it signals
has dropped to a LOW level, allowing the B-device to safely initiate V
BUS
The ISP1507D1 provides partial OTG support. A low-power OTG A-device
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. 03 — 28 July 2010
15) of the RXCMD informs the link of information related
BUS
BUS
, an overcurrent detector must be used and
can connect the V
ULPI HS USB host and peripheral transceiver
RxError
0
0
1
X
applies. The OTG A-device also uses
BUS
BUS
Section
power to the ISP1507D1
pulsing SRP.
ISP1507D1
HostDisconnect
0
0
0
1
© ST-ERICSSON 2010. All rights reserved.
10.8.1.
Section
BUS
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