dsp56854 Freescale Semiconductor, Inc, dsp56854 Datasheet - Page 8

• Manufacturer Part Number: dsp56854
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

Part 2 Signal/Connection Descriptions
2.1 Introduction
The input and output signals of the 56854 are organized into functional groups, as shown in
as illustrated in
signals present.
8
1
2. MODA, MODB and MODC can be used as GPIO after the bootstrap process has completed.
3. The following Host Interface signals are multiplexed: HRWB to HRD, HDS to HWR, HREQ to HTRQ and HACK to HRRQ.
.
V
DD
= V
DD CORE,
Power (V
Ground (V
PLL and Clock
External Bus Signals
External Chip Select*
Interrupt and Program Control
Host Interface (HI)*
Enhanced Synchronous Serial Interface (ESSI0) Port*
Serial Communications Interface (SCI0) Ports*
Serial Communications Interface (SCI1) Ports*
Serial Peripheral Interface (SPI) Port*
Quad Timer Module Port*
JTAG/Enhanced On-Chip Emulation (EOnCE)
*Alternately, GPIO pins
Figure
V
SS
DD,
SS,
= V
V
SS CORE,
V
DDIO, or
2-1. In
SSIO,
Table 2-1 Functional Group Pin Allocations
or V
V
V
DDIO
DDA
SSA
Table
= V
)
)
Functional Group
DD IO,
3-1, each table row describes the package pin and the signal or
56854 Technical Data, Rev. 6
V
SSIO
= V
SS IO,
V
DDA
= V
DD ANA,
V
SSA
= V
SS ANA
Number of Pins
(6, 11, 1)
(6, 10, 1)
Freescale Semiconductor
16
39
7
3
4
6
2
2
4
4
6
2
3
1
1
Table 2-1
and