isp1504a1 NXP Semiconductors, isp1504a1 Datasheet - Page 34

• Manufacturer Part Number: isp1504a1
• Description: Isp1504a1; Isp1504c1 Ulpi Hi-speed Universal Serial Bus On-the-go Transceiver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 17.
ISP1504A1_ISP1504C1_1
Product data sheet
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
Fig 13. Example of using the ISP1504x1 to transmit and receive USB data
DATA [ 7:0 ]
CLOCK
NXT
STP
DIR
PHY pipeline delays
9.8.1.1 ISP1504x1 pipeline delays
9.8.1.2 Allowed link decision time
9.8.1 USB packet timing
9.8 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 ISP1504x1 delays are shown in
Low Pin Interface (ULPI) Specification Rev. 1.1, Section 3.8.2.6.2 .
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 .
link sends
TXCMD
TXCMD
High-speed PHY delay
4
4
1 to 2
3 to 4
6 to 9
5 to 6
5 to 6
ISP1504x1
accepts
TXCMD
Table 18
the next data;
DATA
ISP1504x1
link sends
accepts
Rev. 01 — 6 August 2007
for correct USB system operation. Examples of high-speed
link signals
end of data
Table
Full-speed PHY delay
4
4 to 6
6 to 10
not applicable
not applicable
not applicable
17 to 18
ULPI bus
ISP1504A1; ISP1504C1
is idle
17. For detailed description, refer to UTMI+
Figure 14
turnaround
asserts DIR,
ISP1504x1
turnaround
Table
causing
cycle
and
18. Link designs must follow
RXCMD
Figure
ULPI HS USB OTG transceiver
ISP1504x1
(NXT LOW)
Figure
RXCMD
sends
Low-speed PHY delay
4
16 to 18
74 to 75
not applicable
not applicable
not applicable
122 to 123
13. For details on USB
15. For details, refer to
DATA
(NXT HIGH)
ISP1504x1
USB data
sends
© NXP B.V. 2007. All rights reserved.
turnaround
DIR, causing
ISP1504x1
turnaround
deasserts
cycle
004aaa944
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