mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 932
mpc823rg
Manufacturer Part Number
mpc823rg
Description
Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MPC823RG.pdf
(1348 pages)
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Communication Processor Module
PA7 can be configured as a general-purpose I/O pin, but not an open-drain pin. If the
corresponding PADIR bit is a zero, it can also be the CLK1 pin, the TIN1 pin, the L1RCLKA
pin, or all three at once. There is nothing to select other than these three inputs in port A
because the connections are made separately in the serial interface and timer mode
registers. If the PADIR bit is a 1, this pin can also be the BRGO1 pin. If the PA7 pin is a
general-purpose I/O pin, then the input to the on-chip peripheral is internally connected to
BRG01. Refer to Section 16.7 The Serial Interface with Time-Slot Assigner for more
details about using the CLK1 and L1RCLKA pins.
PA4 can be configured as a general-purpose I/O pin, but not an open-drain pin. If the PADIR
bit is zero, PA4 can also be the CLK4 pin. If the PADIR bit is a 1, PA4 can be the TOUT2
pin. If the PA4 pin is a general-purpose I/O pin, then the input to the on-chip CLK4 function
is grounded. Refer to Section 16.7 The Serial Interface with Time-Slot Assigner for more
details.
USB
TO
PADAT
BIT 14
USBOE
TO
OUTPUT
LATCH
MUX
EN
Figure 16-132. Parallel Block Diagram For PA14
0
1
Freescale Semiconductor, Inc.
EN
For More Information On This Product,
16 BITS
PADIR
MPC823 REFERENCE MANUAL
0
1
Go to: www.freescale.com
MUX
EN
EN
16 BITS
PAPAR
1
0
MUX
EN
16 BITS
PAODR
OPEN
DRAIN
CNTL
EN
MOTOROLA
USBTXD/PA14
PIN
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