11. Signals > Signal Groupings
222
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
I2C_SEL
I, LVTTL,
PU
I
2
C Pin Select.
Together with the I2C_SA[1,0] pins, the Tsi574
determines the lower 2 bits of the 7-bit address of
the EEPROM address it boots from.
When asserted, the I2C_SA[1,0] values are also
be used as the lower two bits of the EEPROM
address.
When de-asserted, the I2C_SA[1,0] pins are
ignored and the lower two bits of the EEPROM
address are default to 00.
The values of the lower two bits of the EEPROM
address can be over-ridden by software after
reset.
No termination required. Internal
pull-up can be used for logic 1.
Pull up to VDD_IO through a
10K resistor if external pull-up is
desired. Pull down to VSS_IO to
change the logic state.
JTAG / TAP Controller
TCK
I, LVTTL,
PD
IEEE 1149.1/1149.6 Test Access Port
Clock input
Pull up to VDD_IO through a
10K resistor if not used.
TDI
I, LVTTL,
PU
IEEE 1149.1/1149.6 Test Access Port
Serial Data Input
Pull up to VDD_IO through 10K if
not used or if higher edge rate is
required.
TDO
O, LVTTL
IEEE 1149.1/1149.6 Test Access Port
Serial Data Output
No connect if JTAG is not used.
Pull up to VDD_IO through a
10K resistor if used.
TMS
I, LVTTL,
PU
IEEE 1149.1/1149.6 Test Access Port
Test Mode Select
Pull up to VDD_IO through a
10K resistor if not used.
TRST_b I,
LVTTL,
PU
IEEE 1149.1/1149.6 Test Access Port
TAP Reset Input
This input must be asserted during the assertion of
HARD-RST_b. Afterwards, it can be left in either
state.
Combine the HARD_RST_b and TRST_b signals
with an AND gate and use the output to drive the
TRST_b pin.
Tie to VSS_IO through a 10K
resistor if not used.
BCE
I, LVTTL,
PU
Boundary Scan compatibility enabled pin. This
input is used to aid 1149.6 testing.
This signal also enables system level diagnostic
capability using features built into the SerDes. For
more information on this functionality, refer to the
Serial RapidIO Signal Analyzer documentation
available on the IDT website.
This signal must be tied to VDD_IO during normal
operation of the device, and during JTAG
accesses of the device registers
This signal should have the
capability to be pulled-up or
pulled-low.
• The default setting is to be
pulled-up.
• Pulling the signal low enables
the signal analyzer
functionality on the SerDes
• A 10K resistor to VDD_IO
should be used.
Table 31: Tsi574 Signal Descriptions (Continued)
Pin Name
Type
Description
Recommended Termination
a
Содержание IDT Tsi574
Страница 1: ...IDT Tsi574 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 100: ...4 Internal Switching Fabric Packet Queuing 100 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 224: ...11 Signals Pinlist and Ballmap 224 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 490: ...B Clocking P_CLK Programming 490 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 512: ...Index 512 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...