11. Signals > Signal Groupings
227
Tsi576 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
I
2
C
I2C_SCLK
I/O, OD,
LVTTL,
PU
I
2
C input/output clock, up to 100 kHz.
If an EEPROM is present on the I
2
C bus, this clock
signal must be connected to the clock input of the
serial EEPROM on the I
2
C bus. If an EEPROM is
not present, the recommended termination should
be used.
No termination required. Internal
pull-up can be used for logic 1.
Pull up to VDD_IO through a
minimum 470 ohms resistor if
higher edge rate required.
I2C_SD
I/O, OD,
LVTTL,
PU
I
2
C input and output data bus (bidirectional open
drain)
No termination required. Internal
pull-up can be used for logic 1.
Pull up to VDD_IO through a
minimum 470 ohms resistor if
higher edge rate required.
I2C_DISABLE
I, LVTTL,
PD
Disable I
2
C register loading after reset. When
asserted, the Tsi576 does not attempt to load
register values from I
2
C.
0 = Enable I
2
C register loading
1 = Disable I
2
C register loading
Must remain stable for 10 P_CLK cycles after
HARD_RST_b is de-asserted in order to be
sampled correctly.
Note: This signal does not control the slave
accessibility of the interface.
This signal is ignored after reset.
No termination required. Pull up
to VDD_IO through a 10K
resistor if I
2
C loading is not
required.
I2C_MA
I, LVTTL,
PU
I
2
C Multibyte Address.
When driven high, I
2
C module expects multi-byte
peripheral addressing; otherwise, when driven low,
single-byte peripheral address is assumed.
Must remain stable for 10 P_CLK cycles after
HARD_RST_b is de-asserted in order to be
sampled correctly.
This signal is ignored after reset.
No termination required. Internal
pull-up can be used for logic 1.
Pull up to VDD_IO through 10K
resistor if external pull-up is
desired. Pull down to VSS_IO to
change the logic state.
I2C_SA[1,0]
I, LVTTL,
PU
I
2
C Slave Address pins. The values on these two
pins represent the values for the lower 2 bits of the
7-bit address of Tsi576 when acting as an I
2
C
slave (see
C Slave Configuration Register” on
).
The values at these pins can be overridden by
software after reset.
No termination required. Internal
pull-up can be used for logic 1.
Pull up to VDD_IO through 10K
resistor if external pull-up is
desired. Pull down to VSS_IO to
change the logic state.
Table 31: Tsi576 Signal Descriptions (Continued)
Pin Name
Type
Description
Recommended Termination
a
Содержание IDT Tsi576
Страница 1: ...IDT Tsi576 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 102: ...4 Internal Switching Fabric Packet Queuing 102 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 230: ...11 Signals Pinlist and Ballmap 230 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 506: ...B Clocking P_CLK Programming 506 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 528: ...Index 528 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...