ISP1507B1HNTM STEricsson, ISP1507B1HNTM Datasheet - Page 44

• Manufacturer Part Number: ISP1507B1HNTM
• Manufacturer: STEricsson

Specifications of ISP1507B1HNTM

• Lead Free Status / RoHS Status: Compliant

CD00269905
Product data sheet
Fig 19. Transmitting USB packets without automatic SYNC and EOP generation
TXREADY
10.12 On-The-Go operations
TXVALID
ENABLE
CLOCK
DP, DM
STUFF
TXBIT
DATA
[7:0]
STP
NXT
DIR
PHY will not transmit any EOP. The ISP1507x1 will also detect if the PID byte is A5h,
indicating an SOF packet, and automatically send a long EOP when STP is asserted. To
transmit chirp and resume signaling, the link must set OPMODE to 10b.
On-The-Go (OTG) is a supplement to Universal Serial Bus Specification Rev. 2.0 that
allows a portable USB device to assume the role of a limited USB host by defining
improvements, such as a small connector and low power. Non-portable devices, such as
standard hosts and embedded hosts, can also benefit from OTG features.
The ISP1507x1 OTG PHY is designed to support all the tasks specified in the OTG
supplement. The ISP1507x1 provides the front-end analog support for Host Negotiation
Protocol (HNP) and Session Request Protocol (SRP) for dual-role devices. The
supporting components include:
The following subsections describe how to use the ISP1507x1 OTG components.
•
•
•
•
Voltage comparators
– A_VBUS_VLD
– SESS_VLD (session valid, can be used for both A-session and B-session valid)
– SESS_END (session end)
Pull-up and pull-down resistors on DP and DM
ID detector indicates if micro-A or micro-B plug is inserted
Charge and discharge resistors on V
TXCMD
IDLE
00h
00h 00h 80h PID
SYNC
Rev. 03 — 26 July 2010
PID
D1
D2
ISP1507A1; ISP1507B1
BUS
D3
DATA PAYLOAD
...
... D
N − 1
ULPI HS USB OTG transceiver
D
N
FEh
EOP
© ST-ERICSSON 2010. All rights reserved.
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