dsp56800eerm Freescale Semiconductor, Inc, dsp56800eerm Datasheet - Page 20

• Manufacturer Part Number: dsp56800eerm
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

20
* When the on-chip regulator is disabled, these four pins become 2.5V V
CLKMODE
V
OCR_DIS
V
V
V
V
EXTAL
SSA_ADC
Signal
Name
V
V
CAP
CAP
CAP
CAP
V
V
V
V
V
V
PP
PP
SS
SS
SS
SS
SS
SS
1
2
1*
2*
3*
4*
Table 2-2 Signal and Package Information for the 160-Pin LQFP and MBGA
125
160
115
144
141
Pin
No.
27
41
74
80
91
62
95
15
99
94
2
Ball No.
G11
D12
H11
H12
K11
K14
J11
J12
G4
C2
E7
E6
K8
E8
A7
J4
Supply
Supply
Supply
Type
Input
Input
Input
Input
56F8357 Technical Data, Rev. 15
During
Supply
Reset
State
Input
Input
Input
Input
V
drivers.
ADC Analog Ground — This pin supplies an analog ground to
the ADC modules.
On-Chip Regulator Disable —
Tie this pin to V
Tie this pin to V
This pin is intended to be a static DC signal from
power-up to shut down. Do not try to toggle this pin for
power savings during operation.
V
enabled), connect each pin to a 2.2μF or greater bypass
capacitor in order to bypass the core logic voltage regulator,
required for proper chip operation. When OCR_DIS is tied to
V
should be connected to a regulated 2.5V power supply.
Note: This bypass is required even if the chip is powered
with an external supply.
V
circuit for normal functionality.
Clock Input Mode Selection — This input determines the
function of the XTAL and EXTAL pins.
1 = External clock input on XTAL is used to directly drive the
input clock of the chip. The EXTAL pin should be grounded.
0 = A crystal or ceramic resonator should be connected
between XTAL and EXTAL.
External Crystal Oscillator Input — This input can be
connected to an 8MHz external crystal. Tie this pin low if XTAL
is driven by an external clock source.
SS
CAP
DD
PP
1 - 2 — These pins should be left unconnected as an open
— These pins provide ground for chip logic and I/O
(regulator disabled), these pins become V
1 - 4 — When OCR_DIS is tied to V
DD_CORE
SS
DD
.
to enable the on-chip regulator
to disable the on-chip regulator
Signal Description
Freescale Semiconductor
SS
(regulator
DD_CORE
Preliminary
and