MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 370

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

Specifications of MCF5272VF66

• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

UART Modules
16.3.6
The receiver buffers contain one serial shift register and a 24-byte FIFO. RxD is connected to the serial
shift register. The CPU reads from the top of the stack while the receiver shifts and updates from the
bottom when the shift register is full (see
16-10
Bits
3–2
1–0
Address
Reset
Field
Value
R/W
00
01
10
11
00
01
10
11
UART Receiver Buffers (URBn)
no action taken
transmitter enable
transmitter disable
no action taken
receiver enable
receiver disable
7
Command
MCF5272 ColdFire
—
—
Table 16-6. UCRn Field Descriptions (continued)
Figure 16-7. UART Receiver Buffer (URBn)
Causes the transmitter to stay in its current mode: if the transmitter is enabled, it
remains enabled; if the transmitter is disabled, it remains disabled.
Enables operation of the channel’s transmitter. USRn[TxEMP,TxRDY] are set. If the
transmitter is already enabled, this command has no effect.
Terminates transmitter operation and clears USRn[TxEMP,TxRDY]. If a character is
being sent when the transmitter is disabled, transmission completes before the
transmitter becomes inactive. If the transmitter is already disabled, the command has
no effect.
Reserved, do not use.
Causes the receiver to stay in its current mode. If the receiver is enabled, it remains
enabled; if disabled, it remains disabled.
If the UART module is not in multidrop mode (UMR1n[PM] ¦ 11),
enables the channel's receiver and forces it into search-for-start-bit state. If the receiver
is already enabled, this command has no effect.
Disables the receiver immediately. Any character being received is lost. The command
does not affect receiver status bits or other control registers. If the UART module is
programmed for local loop-back or multidrop mode, the receiver operates even though
this command is selected. If the receiver is already disabled, the command has no
effect.
Reserved, do not use.
TC Field (This field selects a single command)
®
RC (This field selects a single command)
Integrated Microprocessor User’s Manual, Rev. 3
Figure
MBAR + 0x10C,0x14C
16-24). RB contains the character in the receiver.
0000_0000
Read only
RB
Description
Freescale Semiconductor
RECEIVER ENABLE
0