dsp56800eerm Freescale Semiconductor, Inc, dsp56800eerm Datasheet - Page 116

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

116
1. This applies to the four pins that serve as Quad Decoder / Quad Timer / SPI / GPIOC functions. A separate set of control bits
2. Reset configuration
3. Quad Decoder pins are always inputs and function in conjunction with the Quad Timer pins.
GPIO Input
GPIO Output
Quad Timer Input /
Quad Decoder Input
Quad Timer Output /
Quad Decoder Input
SPI input
SPI output
is used for each pin.
Pin Function
Figure 6-10 Overall Control of Pads Using SIM_GPS Control
2
3
Table 6-2 Control of Pads Using SIM_GPS Control
Quad Timer Controlled
0
0
1
1
1
1
SPI Controlled
—-
—
—
—
0
1
SIM_ GPS Register
Control Registers
56F8357 Technical Data, Rev. 15
GPIO Controlled
—
—
0
0
1
1
0
1
GPIOC_PER Register
—
—
—
—
0
1
0
1
See the “Switch Matrix for Inputs to the Timer”
table in the 56F8300 Peripheral User Manual
for the definition of the timer inputs based on
the Quad Decoder Mode configuration.
See SPI controls for determining the direction
of each of the SPI pins.
I/O Pad Control
Comments
1
Freescale Semiconductor
Preliminary