ꢀ ꢁ ꢂ ꢃ ꢄꢅ ꢆ ꢇ ꢈꢉ ꢈꢀꢊ ꢀꢁ ꢂꢃ ꢄ ꢅ ꢆꢇ ꢈ ꢉ ꢋꢀꢊ ꢀꢁ ꢂꢃ ꢄ ꢅ ꢆꢇ ꢈ ꢉ ꢇ ꢀ
ꢌ ꢍ ꢎꢏ ꢐꢑꢒ ꢓꢍ ꢔ ꢀ ꢐꢍ ꢕ ꢍ ꢀꢖꢗ ꢂ ꢍ ꢕꢔ ꢖꢗ ꢒ ꢘꢓ ꢆꢏ ꢂꢂꢓ ꢘꢂ
SPRS226H − NOVEMBER 2003 − REVISED AUGUST 2005
Terminal Functions (Continued)
SIGNAL
NAME
IPD/
IPU
†
TYPE
DESCRIPTION
‡
NO.
UTOPIA SLAVE (ATM CONTROLLER) − TRANSMIT INTERFACE (CONTINUED)
Y
Y
Y
Y
Y
Y
Y
Y
UXDATA7
UXDATA6
UXDATA5
UXDATA4
UXDATA3
UXDATA2
UXDATA1
UXDATA0
AD10
AD9
AD8
AE8
AF9
AF7
AE7
AD7
8-bit Transmit Data Bus
Using the Transmit Data Bus, the UTOPIA Slave (on the rising edge of the UXCLK) transmits
the 8-bit ATM cells to the Master ATM Controller.
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), these pins are tied-
off.
O/Z
UTOPIA SLAVE (ATM CONTROLLER) − RECEIVE INTERFACE
Source clock for UTOPIA receive driven by Master ATM Controller.
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
Y
URCLK
AD12
AF14
I
ꢂ
Receive cell available status output signal from UTOPIA Slave.
0
1
indicates NO space is available to receive a cell from Master ATM Controller
indicates space is available to receive a cell from Master ATM Controller
Y
URCLAV
O/Z
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
UTOPIA receive interface enable input signal. Asserted by the Master ATM Controller to indi-
cate to the UTOPIA Slave to sample the Receive Data Bus (URDATA[7:0]) and URSOC signal
in the next clock cycle or thereafter.
Y
URENB
AD15
AB14
I
I
◊
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
Receive Start-of-Cell signal. This signal is output by the Master ATM Controller to indicate to
the UTOPIA Slave that the first valid byte of the cell is available to sample on the 8-bit Receive
Data Bus (URDATA[7:0]).
Y
URSOC
CLKX1/
ꢂ
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
McBSP1 [default] or UTOPIA receive address pins
AB12
AC8
I/O/Z
I
◊
◊
◊
§
§
URADDR4
As UTOPIA receive address pins URADDR[4:0] (I), UTOPIA_EN (BEA11 pin) = 1:
CLKS1/
•
5-bit Slave receive address input pins driven by the Master ATM Controller to identify and
select one of the Slave devices (up to 31 possible) in the ATM System.
URADDR3
CLKR1/
URADDR2
AC10
I/O/Z
•
URADDR1 and URADDR0 pins are tied off when the UTOPIA peripheral is disabled
[UTOPIA_EN (BEA11 pin) = 0]
§
Y
Y
URADDR1
AF10
AE10
I
I
◊
◊
For the McBSP1 pin functions (UTOPIA_EN (BEA11 pin) = 0 [default]), see the
MULTICHANNEL BUFFERED SERIAL PORT 1 (McBSP1) section of this table.
URADDR0
†
‡
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground
IPD = Internal pulldown, IPU = Internal pullup. (These IPD/IPU signal pins feature a 30-kΩ IPD or IPU resistor. To pull up a signal to the opposite
supply rail, a 1-kΩ resistor should be used.)
§
These pins are multiplexed pins. For more details, see the Device Configurations section of this data sheet.
ꢂ External pulldowns required: If UTOPIA is selected (BEA11 = 1) and these pins are connected to other devices, then a 10-kΩ resistor must be
used to externally pull down each of these pins. If these pins are “no connects”, then only UXCLK and URCLK need to be pulled down and other
pulldowns are not necessary.
◊ External pullups required: If UTOPIA is selected (BEA11 = 1) and these pins are connected to other devices, then a 10-kΩ resistor must be used
to externally pull up each of these pins. If these pins are “no connects”, then the pullups are not necessary.
ΨThe C6414T device does not support the UTOPIA peripheral; therefore, these standalone UTOPIA pins are Reserved (leave unconnected, do
not connect to power or ground) with the exception of UXCLK and URCLK which should be connected to a 10-kΩ pulldown resistor (see the
square [ꢂ ] footnote).
54
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