mc68307ad Freescale Semiconductor, Inc, mc68307ad Datasheet - Page 16

• Manufacturer Part Number: mc68307ad
• Description: Integrated Multiple-bus Processor
• Manufacturer: Freescale Semiconductor, Inc

UART Programming Model
The programming model for the UART module is listed in Table 10. The FC (function code) column indicates
whether a register is restricted to supervisor access (S) or programmable to exist in either supervisor or user
space (S/U). The address column contains the offset from the base address (MBASE) contained in the SIM07
MBAR.
16
MBASE+$10D
MBASE+$11D
MBASE+$10B
MBASE+$10B
MBASE+$10F
MBASE+$11B
MBASE+$11F
MBASE+$101
MBASE+$103
MBASE+$105
MBASE+$107
MBASE+$107
MBASE+$109
MBASE+$109
MBASE+$119
Address
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
S/U
FC
Do not access byte $10A
Do not access byte $10A
Do not access byte $10C
Do not access byte $10E
Do not access byte $11A
Do not access byte $11C
Do not access byte $11E
Do not access byte $104
Do not access byte $106
Do not access byte $106
Do not access byte $108
Do not access byte $108 (write) UART auxiliary control register (UACR)
Do not access byte $118
Do not access byte $100
Do not access byte $102 UART status/clock select register (USR,UCSR)
MC68307 TECHNICAL INFORMATION
Table 10. UART Module Registers
(read) UART interrupt status register (UISR)
(write) UART interrupt mask register (UIMR)
(read) UART CTS change register (UCCR)
Register Name
(write) UART transmit buffer (UTB, URB)
UART RTS output bit reset cmd (URBR)
(read) UART receive buffer (UTB, URB)
UART CTS unlatched input port (UCP)
UART RTS output bit set cmd (URBS)
UART interrupt vector register (UIVR)
Baud rate gen prescaler msb (UBG1)
UART mode register (UMR1,UMR2)
Baud rate gen prescaler lsb (UBG2)
UART command register (UCR)
MOTOROLA