Sub-Block Description
MOTOROLA
Universal Asynchronous Receiver/Transmitters (UART) Modules
27-9
Figure 27-2. UART Block Diagram and Clock Generation Diagram
27.5 Sub-Block Description
The UART module is easy to use from both hardware and software perspectives. Six working registers
provide all status (USR1_1/USR1_2 and USR2_1/USR2_2) and control (UCR1_1/UCR1_2,
UCR2_1/UCR2_2, UCR3_1/UCR3_2, and UCR4_1/UCR4_2) functions. A separate test register is
provided for applications that require it. The binary rate multiplier registers (UBIR_1/UBIR_2,
UBMR_1/UBMR_2—and includes BMPR1_1/BMPR1_2 and BMPR4_1/BMPR4_2) control the UART
bit rate.
CKIH
BRM_CLK
Bit Stream
To Auto
Baud
Transmitter
Data Path
Binary Rate
Multiplier
(BRM)
Programmable
Divider
Receiver
Data Path
RTS
CTS
DTR
RI
DCD
DSR
TX
RX
IF In
terfa
c
e
D
C
E Interface
TxF
IFO
R
x
FIF
O
Per
ipheral Gaske
t Blo
c
k
Module
In
terfa
ce Ga
sket B
lock (AIPI)
UART
Data
Control
PERCLK1
BIT 0
Bit 1
Bit 2
INC = 0, MOD = 1 –> Ratio = 0.05 = 1/2
Bit 1
Bit 2
Bit 0
Bit 4
Bit 5
Bit 6
Bit 7
RXD / TXD
Bit 3
Start
Bit
STOP
BIT
Next
Start
Bit
Standard
Data
8-Bit Data Format
Possible
Parity
Bit
-15- -16- -1-
-2-
-3-
-4-
-5-
-6-
-7-
-8-
-9-
-10- -11- -12- -13- -14- -15- -16- -1-
-2-
-3-
from PLL &
Clock Cont
REF_CLK
UFC:RFDIV[2:0]
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...