National CP3BT26 Computer Hardware User Manual


 
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CP3BT26
22.3 UART REGISTERS
Software interacts with the UART modules by accessing the
UART registers, as listed in Table 70.
Table 70 UART Registers
Name Address Description
U0RBUF FF F202h
UART0 Receive Data
Buffer
U0TBUF FF F200h
UART0 Transmit Data
Buffer
U0PSR FF F20Eh
UART0 Baud Rate
Prescaler
U0BAUD FF F20Ch
UART0 Baud Rate
Divisor
U0FRS FF F208h
UART0 Frame Select
Register
U0MDSL1 FF F20Ah
UART0 Mode Select
Register 1
U0STAT FF F206h
UART0 Status
Register
U0ICTRL FF F204h
UART0 Interrupt Con-
trol Register
U0OVR FF F210h
UART0 Oversample
Rate Register
U0MDSL2 FF F212h
UART0 Mode Select
Register 2
U0SPOS FF F214h
UART0 Sample
Position Register
U1RBUF FF F222h
UART1 Receive Data
Buffer
U1TBUF FF F220h
UART1 Transmit Data
Buffer
U1PSR FF F22Eh
UART1 Baud Rate
Prescaler
U1BAUD FF F22Ch
UART1 Baud Rate
Divisor
U1FRS FF F228h
UART1 Frame Select
Register
U1MDSL1 FF F22Ah
UART1 Mode Select
Register 1
U1STAT FF F226h
UART1 Status
Register
U1ICTRL FF F224h
UART1 Interrupt Con-
trol Register
U1OVR FF F230h
UART1 Oversample
Rate Register
U1MDSL2 FF F232h
UART1 Mode Select
Register 2
U1SPOS FF F234h
UART1 Sample
Position Register
U2RBUF FF F242h
UART2 Receive Data
Buffer
U2TBUF FF F240h
UART2 Transmit Data
Buffer
U2PSR FF F24Eh
UART2 Baud Rate
Prescaler
U2BAUD FF F24Ch
UART2 Baud Rate
Divisor
U2FRS FF F248h
UART2 Frame Select
Register
U2MDSL1 FF F24Ah
UART2 Mode Select
Register 1
U2STAT FF F246h
UART2 Status
Register
U2ICTRL FF F244h
UART2 Interrupt Con-
trol Register
U2OVR FF F250h
UART2 Oversample
Rate Register
U2MDSL2 FF F252h
UART2 Mode Select
Register 2
U2SPOS FF F254h
UART2 Sample
Position Register
U3RBUF FF F262h
UART3 Receive Data
Buffer
U3TBUF FF F260h
UART3 Transmit Data
Buffer
U3PSR FF F26Eh
UART3 Baud Rate
Prescaler
U3BAUD FF F26Ch
UART3 Baud Rate
Divisor
U3FRS FF F268h
UART3 Frame Select
Register
U3MDSL1 FF F26Ah
UART3 Mode Select
Register 1
U3STAT FF F266h
UART3 Status
Register
U3ICTRL FF F264h
UART3 Interrupt Con-
trol Register
Table 70 UART Registers
Name Address Description