dsp56852 Freescale Semiconductor, Inc, dsp56852 Datasheet - Page 7

• Manufacturer Part Number: dsp56852
• Description: 56800e 16-bit Digital Signal Controllers Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

Part 2 Signal/Connection Descriptions
2.1 Introduction
The input and output signals of the 56852 are organized into functional groups, as shown in
as illustrated in
signals present.
Freescale Semiconductor
1. V
2. CLKOUT is muxed Address pin A20.
3. Four Address pins are multiplexed with the timer, CS3 and CLKOUT pins.
4. CS3 is multiplexed with external Address Bus pin A19.
5. Mode pins are multiplexed with External Data pins D13-D15 like A17and A18.
6. Four of these pins are multiplexed with SSI.
7. Two of these pins are multiplexed with 2 bits of the External Address Bus A17and A18.
DD
= V
Power (V
Ground (V
Phase Lock Loop (PLL) and Clock
External Bus Signals
External Chip Select*
Interrupt and Program Control
Synchronous Serial Interface (SSI) Port*
Serial Communications Interface (SCI) Port*
Serial Peripheral Interface (SPI) Port
Quad Timer Module Port
JTAG/Enhanced On-Chip Emulation (EOnCE)
*Alternately, GPIO pins
DD CORE,
Figure
V
DD,
SS,
SS
V
= V
V
2-1. In
DDIO, or
SSIO,
SS CORE,
Table 2-1 Functional Group Pin Allocations
or V
V
DDA
Table
SSA
V
DDIO
)
)
Functional Group
= V
3-1, each table row describes the package pin and the signal or
DD IO,
56852 Technical Data, Rev. 8
V
SSIO
= V
SS IO,
V
DDA
= V
DD ANA,
V
SSA
= V
SS ANA
Number of Pins
10
10
39
2
3
3
0
0
6
2
6
2
4
5
6
7
1
1
3
Table 2-1
Introduction
and
7