SMJ320C6414 Datasheet, PDF (53/133 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSORS

SMJ320C6414, SMJ320C6415, SMJ320C6416
FIXEDĆPOINT DIGITAL SIGNAL PROCESSORS
SGUS050A − JANUARY 2004 − REVISED MARCH 2004
SIGNAL
NAME
NO.
UXDATA7^Y
UXDATA6^Y
UXDATA5^Y
UXDATA4^Y
UXDATA3^Y
UXDATA2^Y
UXDATA1^Y
UXDATA0^Y
W10
T11
W9
AB6
V10
U10
AA7
V9
URCLK^Y
U12
URCLAV^Y
AA14
Terminal Functions (Continued)
TYPE†
IPD/
IPU‡
DESCRIPTION
UTOPIA SLAVE (ATM CONTROLLER) − TRANSMIT INTERFACE (CONTINUED)
8-bit Transmit Data Bus
Using the Transmit Data Bus, the UTOPIA Slave (on the rising edge of the UXCLK) transmits
O/Z
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.
UTOPIA SLAVE (ATM CONTROLLER) − RECEIVE INTERFACE
I
h
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.
Receive cell available status output signal from UTOPIA Slave.
0 indicates NO space is available to receive a cell from Master ATM Controller
O/Z
1 indicates space is available to receive a cell from Master ATM Controller
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
URENB^Y
AB16
I
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.
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
URSOC^Y
W13
I
Receive Start-of-Cell signal. This signal is output by the Master ATM Controller to indicate to
h
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]).
When the UTOPIA peripheral is disabled (UTOPIA_EN [BEA11 pin] = 0), this pin is tied-off.
CLKX1/
URADDR4§
CLKS1/
URADDR3§
T12 I/O/Z
Y8
I
McBSP1 [default] or UTOPIA receive address pins
◊
As UTOPIA receive address pins URADDR[4:0] (I), UTOPIA_EN (BEA11 pin) = 1:
◊
• 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.
CLKR1/
URADDR2§
AB7 I/O/Z
◊ • URADDR1 and URADDR0 pins are tied off when the UTOPIA peripheral is disabled
[UTOPIA_EN (BEA11 pin) = 0]
URADDR1^Y
U11
I
◊
URADDR0^Y
AA9
I
For the McBSP1 pin functions (UTOPIA_EN (BEA11 pin) = 0 [default]), see the MULTICHAN-
◊
NEL BUFFERED SERIAL PORT 1 (McBSP1) section of this table.
† _{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.}
hExternal 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 C6414 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 [h] footnote).
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