13
INDUSTRIAL TEMPERATURE RANGE
IDT72V73260 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 16,384 x 16,384
TCK
Device Inputs
(1)
TDI/TMS
t
JDC
tJS
tJRSR
tJF
tJR
x
tJCL
tJCYC
tJCH
tJH
tJCD
tJRST
Device Outputs
(2)
TDO
TRST
5932 drw06
TABLE 12 — SYSTEM INTERFACE PARAMETERS
NOTES:
1. Device outputs = All device outputs except TDO.
2. Device inputs = All device inputs except TDI, TMS and TRST.
INSTRUCTION CODE DESCRIPTION
EXTEST 0000 Forces contents of the boundary scan cells onto the device outputs
(1)
. Places the boundary scan register (BSR) between TDI and TDO.
BYPASS 1111 Places the bypass register (BYR) between TDI and TDO.
IDCODE 0010 Loads the ID register (IDR) with the vendor ID code and places the register between TDI and TDO.
HIGH-Z 0100 Places the bypass register (BYR) between TDI and TDO. Forces all device output drivers to a High-Z state.
CLAMP 0011 Places the bypass register (BYR) between TDI and TDO. Forces contents of the boundary scan cells onto the device outputs.
SAMPLE/PRELOAD 0001 Places the boundary scan register (BSR) between TDI and TDO. SAMPLE allows data from device inputs
(2)
and outputs
(1)
to be
captured in the boundary scan cells and shifted serially through TDO. PRELOAD allows data to be input serially into the boundary
scan cells via the TDI.
RESERVED All other codes Several combinations are reserved. Do not use other codes than those identified above.
SYMBOL PARAMETER MIN. MAX. UNITS
tJCYC JTAG Clock Input Period 100 ⎯ ns
tJCH JTAG Clock HIGH 40 ⎯ ns
tJCL JTAG Clock LOW 40 ⎯ ns
tJR JTAG Clock Rise Time ⎯ 3
(1)
ns
tJF JTAG Clock Fall Time ⎯ 3
(1)
ns
tJRST JTAG Reset 50 ⎯ ns
tJRSR JTAG Reset Recovery 50 ⎯ ns
tJCD JTAG Data Output ⎯ 25 ns
tJDC JTAG Data Output Hold 0 ⎯ ns
tJS JTAG Setup 15 ⎯ ns
t
JH JTAG Hold 15 ⎯ ns
TABLE 13 — JTAG AC ELECTRICAL CHARACTERISTICS
(1,2,3,4)
NOTES:
1. Guaranteed by design.
2. 30pF loading on external output signals.
3. Refer to AC Electrical Test Conditions stated earlier in this document.
4. JTAG operations occur at one speed (10MHz). The base device may run at any speed specified in this datasheet.
Figure 3. JTAG Timing Specifications
NOTES:
1. Device inputs = All device inputs except TDI, TMS and TRST.
2. Device outputs = All device outputs except TDO.
