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SCI Registers
607
SPRUI07–March 2020
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Serial Communications Interface (SCI)
10.14.2.7 SCIRXEMU Register (Offset = 6h) [reset = 0h]
SCIRXEMU is shown in Figure 10-17 and described in Table 10-13.
Return to the Summary Table.
Normal SCI data-receive operations read the data received from the SCIRXBUF register. The SCIRXEMU
register is used principally by the emulator (EMU) because it can continuously read the data received for
screen updates without clearing the RXRDY flag. SCIRXEMU is cleared by a system reset. This is the
register that should be used in an emulator watch window to view the contents of the SCIRXBUF register.
SCIRXEMU is not physically implemented
it is just a different address location to access the SCIRXBUF register without clearing the RXRDY flag.
Figure 10-17. SCIRXEMU Register
15 14 13 12 11 10 9 8
RESERVED
R-0h
7 6 5 4 3 2 1 0
ERXDT
R-0h
Table 10-13. SCIRXEMU Register Field Descriptions
Bit Field Type Reset Description
15-8 RESERVED R 0h
Reserved
7-0 ERXDT R 0h
Receive emulation buffer data
Reset type: SYSRSn