TMS320DM6467_10 Datasheet, PDF (125/357 Pages) Texas Instruments – Digital Media System-on-Chip

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TMS320DM6467
Digital Media System-on-Chip
SPRS403F – DECEMBER 2007 – REVISED OCTOBER 2009
4.7.3.8 UART0 Pin Muxing
The UART0 module can operate as either a UART or IrDA/CIR interface. The UART0 pin muxing is
controlled by the UART0CTL bit field in the PINMUX1 register and the TSPOMUX, TSSIMUX, and
TSSOMUX bit fields in the PINMUX0 register. Muxing options are shown in Table 4-33 and Table 4-34.
When UART operation is selected, UART0CTL must be set to either ‘00’ for UART with modem signals or
‘01’ for UART without modem signals. When IrDA/CIR operation is selected, UART0CTL must be set to
‘1x’ to use the IrDA/CIR signals and the modem signal become GPIOs. A TSPOMUX setting of ‘1x’
overrides the modem control mux settings. UART0 can still be used as a UART without modem control or
in IrDA/CIR mode based on the UART0CTL bit field value. A TSSIMUX setting of ‘01’ overrides the UART
data and flow control settings and prevents UART0 from being used. The UART0 modem control pins may
be used as either TSIF 0 output or GPIO pins based on the TSPOMUX and UART0CTL settings. A
TSSOMUX setting of ‘11’ overrides the RIN function with the TS1_WAITIN function.
TSSIMUX[1]
0
0
0
0
0
0
0
0
1
1
1
1
TSSIMUX[0]
0
0
0
0
1
1
1
1
x
x
x
x
Table 4-33. UART0 Pin Muxing—Part 1
UART0CTL[1] UART0CTL[0] _URXD0/
TS1_DIN
0
0
URXD0
0
1
URXD0
1
0
URXD0
1
1
URXD0
0
0
TS1_DIN
0
1
TS1_DIN
1
0
TS1_DIN
1
1
TS1_DIN
0
0
URXD0
0
1
URXD0
1
0
URXD0
1
1
URXD0
PIN FUNCTIONS
UTXD0/
URCTX0/
TS1_PSTIN
URTS0/
UIRTX0/
TS1_EN_WAITO
UTXD0
URTS0
UTXD0
URTS0
URCTX0
UIRTX0
URCTX0
UIRTX0
TS1_PSTIN TS1_EN_WAITO
TS1_PSTIN TS1_EN_WAITO
TS1_PSTIN TS1_EN_WAITO
TS1_PSTIN TS1_EN_WAITO
UTXD0
URTS0
UTXD0
URTS0
URCTX0
UIRTX0
URCTX0
UIRTX0
UCTS0/
USD0
UCTS0
UCTS0
USD0
USD0
–
–
–
–
UCTS0
UCTS0
USD0
USD0
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Device Configurations 125