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TMS320TCI6482
Communications Infrastructure Digital Signal Processor
SPRS246F–APRIL 2005–REVISED MAY 2007
Table 2-3. Terminal Functions (continued)
SIGNAL
NAME
TYPE
(1)
IPD/IPU
(2)
DESCRIPTION
NO.
AD29
AJ28
AF29
AH28
AE29
AG28
AF28
AH26
AE28
AE26
AD26
AF27
AG27
AD27
AE25
AJ27
AJ26
AE27
AG25
AH27
AF25
AD25
AED21
AED20
AED19
AED18
AED17
AED16
AED15
AED14
AED13
AED12
AED11
AED10
AED9
AED8
AED7
AED6
AED5
AED4
AED3
AED2
AED1
AED0
I/O/Z
IPU
EMIFA external data
DDR2 MEMORY CONTROLLER (32-BIT) - CONTROL SIGNALS COMMON TO ALL TYPES OF MEMORY
DDR2 Memory Controller memory space enable. When the DDR2 Memory
E14
O/Z
Controller is enabled, it always keeps this pin low.
E15
O/Z
D15
O/Z
DDR2 Memory Controller bank address control
C15
O/Z
B14
O/Z
DDR2 Memory Controller output clock (CLKIN2 frequency × 10)
A14
O/Z
Negative DDR2 Memory Controller output clock (CLKIN2 frequency × 10)
D13
O/Z
DDR2 Memory Controller SDRAM column-address strobe
C13
O/Z
DDR2 Memory Controller SDRAM row-address strobe
B13
O/Z
DDR2 Memory Controller SDRAM write-enable
D14
O/Z
DDR2 Memory Controller SDRAM clock-enable (used for self-refresh mode)
A17
O/Z
On-die termination signals to external DDR2 SDRAM. These pins should not be
connected to the DDR2 SDRAM.
Note:
There are no on-die termination resistors implemented on the TCI6482
E16
O/Z
DSP die.
F21
I
DDR2 Memory Controller data strobe gate [3:0]
E21
O/Z
For hookup of these signals, please refer to the
Implementing DDR2 PCB
Layout on the TMS320TCI6482
application report (literature number
B9
I
SPRAAA9
).
A9
O/Z
C23
O/Z
DDR2 Memory Controller byte-enable controls
Decoded from the low-order address bits. The number of address bits or
C20
O/Z
byte enables used depends on the width of external memory.
C8
O/Z
Byte-write enables for most types of memory.
C11
O/Z
Can be directly connected to SDRAM read and write mask signal (SDQM).
DCE0
DBA2
DBA1
DBA0
DDR2CLKOUT
DDR2CLKOUT
DSDCAS
DSDRAS
DSDWE
DSDCKE
DEODT1
DEODT0
DSDDQGATE3
DSDDQGATE2
DSDDQGATE1
DSDDQGATE0
DSDDQM3
DSDDQM2
DSDDQM1
DSDDQM0
Device Overview
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