Functional Description
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Table 19-21. UART Mode Selection
Value Mode
0x0: UART 16x mode
0x1: SIR mode
0x2: UART 16x auto-baud
0x3: UART 13x mode
0x4: MIR mode
0x5: FIR mode
0x6: CIR mode
MODESELECT is effective when the module is in operational mode (see Section 19.3.7.1, Register
Access Modes).
19.3.7.2.1 Registers Available for the UART Function
Only the registers listed in Table 19-22 are used for the UART function.
Table 19-22. UART Mode Register Overview
(1) (2)
Address Registers
Offset
Configuration Mode A Configuration Mode B Operational Mode
Read Write Read Write Read Write
0x000 UART_DLL UART_DLL UART_DLL UART_DLL UART_RHR UART_THR
0x004 UART_DLH UART_DLH UART_DLH UART_DLH UART_IER(UART) UART_IER(UA
RT)
0x008 UART_IIR UART_FCR UART_EFR[4] UART_EFR[4] UART_IIR(UART) UART_FCR(U
ART)
0x00C UART_LCR UART_LCR UART_LCR UART_LCR UART_LCR UART_LCR
0x010 UART_MCR UART_MCR UART_XON1_ADD UART_XON1_AD UART_MCR UART_MCR
R1 DR1
0x014 UART_LSR(UA – UART_XON2_ADD UART_XON2_AD UART_LSR(UART) –
RT) R2 DR2
0x018 UART_MSR/U UART_TCR UART_XOFF1/UAR UART_XOFF1/U UART_MSR/UART UART_TCR
ART_TCR T_TCR ART_TCR _TCR
0x01C UART_TLR/UA UART_TLR/UA UART_TLR/UART_ UART_TLR/UAR UART_TLR/UART_ UART_TLR/UA
RT_SPR RT_SPR XOFF2 T_XOFF2 SPR RT_SPR
0x020 UART_MDR1 UART_MDR1[2: UART_MDR1[2:0] UART_MDR1[2:0] UART_MDR1[2:0] UART_MDR1[2
0] :0]
0x024 UART_MDR2 UART_MDR2 UART_MDR2 UART_MDR2 UART_MDR2 UART_MDR2
0x028 – – – – – –
0x02C – – – – – –
0x030 – – – – – –
0x034 – – – – – –
0x038 UART_UASR – UART_UASR – – –
0x03C – – – – – –
0x040 UART_SCR UART_SCR UART_SCR UART_SCR UART_SCR UART_SCR
0x044 UART_SSR – UART_SSR – UART_SSR –
0x048 – – – – – –
0x050 UART_MVR – UART_MVR – UART_MVR –
0x054 UART_SYSC UART_SYSC UART_SYSC UART_SYSC UART_SYSC UART_SYSC
0x058 UART_SYSS – UART_SYSS – UART_SYSS –
(1)
REGISTER_NAME(UART) notation indicates that the register exists for other functions (IrDA or CIR), but fields have different
meanings for other functions.
(2)
REGISTER_NAME[m:n] notation indicates that only register bits numbered m to n apply to the UART function.
3470
Universal Asynchronous Receiver/Transmitter (UART) SPRUH73H–October 2011–Revised April 2013
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