MSC8251 Datasheet, PDF (5/68 Pages) Freescale Semiconductor, Inc – Single-Core Digital Signal Processor

1.2 Signal List By Ball Location
Table 1 presents the signal list sorted by ball number. When designing a board, make sure that the power rail for each signal is
appropriately considered. The specified power rail must be tied to the voltage level specified in this document if any of the
related signal functions are used (active)
Note:
The information in Table 1 and Table 2 distinguishes among three concepts. First, the power pins are the balls of the
device package used to supply specific power levels for different device subsystems (as opposed to signals). Second,
the power rails are the electrical lines on the board that transfer power from the voltage regulators to the device. They
are indicated here as the reference power rails for signal lines; therefore, the actual power inputs are listed as N/A
with regard to the power rails. Third, symbols used in these tables are the names for the voltage levels (absolute,
recommended, and so on) and not the power supplies themselves.
Table 1. Signal List by Ball Number
Ball Number
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
B1
B2
B3
B4
B5
B6
B7
B8
M2DQS3
M2DQS3
M2ECC0
M2DQS8
M2DQS8
M2A5
M2CK1
M2CK1
M2CS0
M2BA0
M2CAS
M2DQ34
M2DQS4
M2DQS4
M2DQ50
M2DQS6
M2DQS6
M2DQ48
M2DQ49
VSS
Reserved
SXPVDD1
SXPVSS1
Reserved
Reserved
SXCVDD1
SXCVSS1
M2DQ24
GVDD2
M2DQ25
VSS
GVDD2
M2ECC1
VSS
GVDD2
Signal Name^1,2
Pin Type¹⁰
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Ground
NC
Power
Ground
NC
NC
Power
Ground
I/O
Power
I/O
Ground
Power
I/O
Ground
Power
Power Rail
Name
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
GVDD2
N/A
—
N/A
N/A
—
—
N/A
N/A
GVDD2
N/A
GVDD2
N/A
N/A
GVDD2
N/A
N/A
MSC8251 Single-Core Digital Signal Processor Data Sheet, Rev. 2
Freescale Semiconductor
5