www.ti.com
SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
Table 2-3. Terminal Functions (continued)
SIGNAL
TYPE
(1)
IPD/IPU
(2)
DESCRIPTION
NAME
NO.
SUPPLY VOLTAGE MONITOR PINS
Die-side 1.2-V core supply (CV
DD
) voltage monitor pin. The monitor pins
indicate the voltage on the die and, therefore, provide the best probe point for
voltage monitoring purposes. For more information regarding the use of this
CV
DDMON
N1
and other voltage monitoring pins, see the
TMS320C6455 Design Guide and
Comparisons to TMS320TC6416T
application report (literature number
SPRAA89
). If the CV
DDMON
pin is not used, it should be connected directly to
the 1.2-V core supply (CV
DD
).
Die-side 3.3-V I/O supply (DV
DD33
) voltage monitor pin. The monitor pins
indicate the voltage on the die and, therefore, provide the best probe point for
voltage monitoring purposes. For more information regarding the use of this
DV
DD33MON
L6
and other voltage monitoring pins, see the
TMS320C6455 Design Guide and
Comparisons to TMS320TC6416T
application report (literature number
SPRAA89
). If the DV
DD33MON
pin is not used, it should be connected directly to
the 3.3-V I/O supply (DV
DD33
).
Die-side 1.5-/1.8-V I/O supply (DV
DD15
) voltage monitor pin. The monitor pins
indicate the voltage on the die and, therefore, provide the best probe point for
voltage monitoring purposes. For more information regarding the use of this
and other voltage monitoring pins, see the
TMS320C6455 Design Guide and
Comparisons to TMS320TC6416T
application report (literature number
SPRAA89
). If the DV
DD15MON
pin is not used, it should be connected directly to
DV
DD15MON
F3
I
the 1.5-/1.8-V I/O supply (DV
DD15
).
NOTE:
If the RGMII mode of the EMAC is not used, the DV
DD15
, DV
DD15MON
,
V
REFHSTL
, RSV13, and RSV14 pins can be connected directly to ground (V
SS
)
to save power. However, connecting these pins directly to ground prevents
boundary-scan from functioning on the RGMII pins of the EMAC. To preserve
boundary-scan functionality on the RGMII pins, see
Section 7.3.4
.
Die-side 1.8-V I/O supply (DV
DD18
) voltage monitor pin. The monitor pins
indicate the voltage on the die and, therefore, provide the best probe point for
voltage monitoring purposes. For more information regarding the use of this
DV
DD18MON
A26
and other voltage monitoring pins, see the
TMS320C6455 Design Guide and
Comparisons to TMS320TC6416T
application report (literature number
SPRAA89
). If the DV
DD18MON
pin is not used, it should be connected directly to
the 1.8-V I/O supply (DV
DD18
).
SUPPLY VOLTAGE PINS
(DV
DD18
/2)-V reference for SSTL buffer (DDR2 Memory Controller). This input
voltage can be generated directly from DV
DD18
using two 1-k
Ω
resistors to form
a resistor divider circuit.
NOTE:
The DDR2 Memory Controller is not used, the V
REFSSTL
, RSV11, and
V
REFSSTL
C14
A
RSV12 pins can be connected directly to ground (V
SS
) to save power.
However, connecting these pins directly to ground prevents boundary-scan
from functioning on the DDR2 Memory Controller pins. To preserve
boundary-scan functionality on the DDR2 Memory Controller pins, see
Section 7.3.4
.
(DV
DD15
/2)-V reference for HSTL buffer (EMAC RGMII). V
REFHSTL
can be
generated directly from DV
DD15
using two 1-k
Ω
resistors to form a resistor
divider circuit.
NOTE:
If the RGMII mode of the EMAC is not used, the DV
DD15
, V
REFHSTL
,
V
REFHSTL
B2
A
RSV13, and RSV14 pins can be connected to directly ground (V
SS
) to save
power. However, connecting these pins directly to ground prevents
boundary-scan from functioning on the RGMII pins of the EMAC. To preserve
boundary-scan functionality on the RGMII pins, see
Section 7.3.4
.
1.8-V I/O supply voltage (SRIO regulator supply).
DV
DDR
AD20
S
NOTE:
If Rapid I/O is not used, this pin can be connected directly to V
SS
.
AC15
SRIO analog supply:
1.25-V I/O supply voltage (-1000 and -1200 devices)
AC17
AV
DDA
A
1.2-V I/O supply voltage (-850 and -720 devices).
Do not
use core supply.
AD16
NOTE:
If Rapid I/O is not used, these pins can be connected directly to V
SS
.
AV
DLL1
A13
A
1.8-V I/O supply voltage.
AV
DLL2
E18
Device Overview
46
Submit Documentation Feedback
