Usb-If Compliance; Platform Cable Usb Ii Timing Diagram - Xilinx Platform Cable USB II Manual

Table 10: Switching Characteristics
Symbol
T Target Setup Time
TSU
(TDI or TMS relative to the
positive edge of TCK)
T Cable Setup Time
CSU
(TDO relative to the
negative edge of TCK)
T Target Propagation Delay Time
TPD
(TDO relative to the
negative edge of TCK)
X-Ref Target - Figure 31
TCK_CCLK_SCK
TMS_PROG_SS /
TDI_DIN_MOSI
Platform Cable USB II asserts
TMS_PROG_SS and
TDI_DIN_MOSI on the falling
edge of TCK_CCLK_SCK
TDO_DONE_MISO
Notes:
1. All times are in nanoseconds and are relative to the target system interface connector.
2. T Min is the minimum setup time guaranteed by Platform Cable USB II relative to the positive edge of TCK_CCLK_SCK.
TSU
3. T Min is the minimum setup required by Platform Cable USB II to properly sample TDO_DONE_MISO.
CSU
4. Propagation delays associated with buffers on the target system must be taken into account to satisfy the minimum setup times.

USB-IF Compliance

Platform Cable USB II is certified by the USB Integrators Forum (USB-IF). Certification is achieved when a product passes
a battery of tests required by the USB-IF Compliance Program. These tests (performed at an independent test facility)
measure a product's conformity with Universal Serial Bus Specification Revision 2.0 and establish a reasonable level of
DS593 (v1.2.1) March 17, 2011
Description
Target devices samples TMS_PROG_SS and
TDI_DIN_MOSI on the rising edge of TCK_CCLK_SCK
T
CLK
T
CPD
Platform Cable USB II samples TDO_DONE_MISO
Figure 31: Platform Cable USB II Timing Diagram
Conditions
V = 1.5V to 3.3V
REF
V = 1.5V to 3.3V
REF
V = 1.5V to 3.3V
REF
T
TSU
on the falling edge of TCK_CCLK_SCK
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Platform Cable USB II
Min Max
4.8
15.8
24.6
Target device asserts TDO_DONE_MISO
on the falling edge of TCK_CCLK_SCK
T
TPD
T
CSU
Units
ns
ns
ns
DS593_31_021408
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