ISP1705AETTM STEricsson, ISP1705AETTM Datasheet - Page 40

• Manufacturer Part Number: ISP1705AETTM
• Manufacturer: STEricsson

Specifications of ISP1705AETTM

• Lead Free Status / RoHS Status: Compliant

ISP1705_2
Product data sheet
Fig 16. Example of using the ISP1705 to transmit and receive USB data
DATA [ 7:0 ]
CLOCK
NXT
STP
DIR
10.6.1.1 ISP1705 pipeline delays
10.6.1.2 Allowed link decision time
10.6.1 USB packet timing
10.6 USB packet transmit and receive
An example of a packet transmit and receive is shown in
packets, refer to UTMI+ Low Pin Interface (ULPI) Specification Rev. 1.1.
The ISP1705 delays (in clock cycles) are shown in
refer to UTMI+ Low Pin Interface (ULPI) Specification Rev. 1.1, Section 3.8.2.6.2.
Table 23.
The amount of clock cycles allocated to the link to respond to a received packet and
correctly receive back-to-back packets is given in
values given in
packet sequences and timing are shown in
UTMI+ Low Pin Interface (ULPI) Specification Rev. 1.1, Section 3.8.2.6.3.
Parameter name
RXCMD delay (J and K)
RXCMD delay (SE0)
TX start delay
TX end delay (packets)
TX end delay (SOF)
RX start delay
RX end delay
link sends
TXCMD
TXCMD
PHY pipeline delays
ISP1705
TXCMD
accepts
Table 24
the next data;
DATA
link sends
Rev. 02 — 21 January 2009
ISP1705
accepts
for correct USB system operation. Examples of high-speed
High-speed PHY
delay
4
4
1 to 2
3 to 4
6 to 9
5 to 6
5 to 6
link signals
end of data
ULPI bus
is idle
Figure 17
turnaround
asserts DIR,
Full-speed PHY
delay
4
4 to 6
6 to 10
not applicable
not applicable
not applicable
17 to 18
turnaround
ISP1705
Table
causing
cycle
Table
and
ULPI Hi-Speed USB transceiver
24. Link designs must follow the
RXCMD
Figure
23. For detailed description,
(NXT LOW)
Figure
ISP1705
RXCMD
sends
16. For details on USB
18. For details, refer to
DATA
(NXT HIGH)
© ST-NXP Wireless 2009. All rights reserved.
USB data
ISP1705
sends
Low-speed PHY
delay
4
16 to 18
74 to 75
not applicable
not applicable
not applicable
122 to 123
ISP1705
turnaround
DIR, causing
turnaround
deasserts
ISP1705
cycle
004aab046
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