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TMS320DM6446
Digital Media System on-Chip
SPRS283–DECEMBER 2005
Table 2-26. UART0, UART1, UART2 Terminal Functions
SIGNAL
NAME
IPD/
IPU
(2)
TYPE
(1)
DESCRIPTION
NO.
UART2
This pin is multiplexed between the CCDC and UART2. When used by the CCDC
as input CI7, it supports several modes.
In 16-bit CCD Analog-Front-End (AFE) mode, it is input CCD15.
In 16-bit YCbCr mode, it is time multiplexed between CB7 and CR7 inputs.
In 8-bit YCbCr mode, it is time multiplexed between Y7, CB7, and CR7 of the
upper 8-bit channel.
When used by UART2 it is the receive data input UART_RXD2.
This pin is multiplexed between the CCDC and UART2.
When used by the CCDC as input CI6, it supports several modes. In 16-bit CCD
AFE mode, it is input CCD14.
In 16-bit YCbCr mode, it is time multiplexed between CB6 and CR6 inputs.
In 8-bit YCbCr mode, it is time multiplexed between Y6, CB6, and CR6 of the
upper 8-bit channel.
In UART2 mode, it is the transmit data output UART_TXD2.
This pin is multiplexed between the CCDC and UART2. When used by the CCDC
as input CI5, it supports several modes.
In 16-bit CCD AFE mode, it is input CCD13.
In 16-bit YCbCr mode, it is time multiplexed between CB5 and CR5 inputs.
In 8-bit YCbCr mode, it is time multiplexed between Y5, CB5, and CR5 of the
upper 8-bit channel.
In UART2 mode, it is the clear to send input UART_CTS2.
This pin is multiplexed between the CCDC and UART2. When used by the CCDC
as input CI4, it supports several modes.
In 16-bit CCD AFE mode, it is input CCD12.
In 16-bit YCbCr mode, it is time multiplexed between CB4 and CR4 inputs.
In 8-bit YCbCr mode, it is time multiplexed between Y4, CB4, and CR4 of the
upper 8-bit channel.
In UART2 mode, it is the ready to send output UART_RTS2.
UART1
This pin is multiplexed between ATA/CF and UART1. For ATA/CF, it is DMA
acknowledge output DMACK.
For UART1, it is transmit data output UART_TXD1.
This pin is multiplexed between ATA/CF and UART1. For ATA/CF, it is DMA
request DMARQ input.
For UART1, it is receive data input UART_RXD1.
UART0
This pin is multiplexed between UART0 and GPIO. For UART0, it is Receive Data
input UART_RXD0.
For GPIO, it is GPIO35.
This pin is multiplexed between UART0 and GPIO. For UART0, it is Transmit Data
output UART_TXD0.
For GPIO, it is GPIO36.
CI7/
CCD15/
UART_RXD2
N19
I/O/Z
IPD
CI6/
CCD14/
UART_TXD2
N18
I/O/Z
IPD
CI5/
CCD13/
UART_CTS2
N17
I/O/Z
IPD
CI4/
CCD12/
UART_RTS2
N16
I/O/Z
IPD
DMACK/
UART_TXD1
H3
I/O/Z
IPD
DMARQ/
UART_RXD1
G1
I/O/Z
IPD
UART_RXD0/
GPIO35
D5
I/O/Z
IPD
UART_TXD0/
GPIO36
C5
I/O/Z
IPD
(1)
(2)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal
IPD = Internal pulldown, IPU = Internal pullup. (To pull up a signal to the opposite supply rail, a 1-k
resistor should be used.)
Table 2-27. PWM0, PWM1, PWM2 Terminal Functions
SIGNAL
NAME
IPD/
IPU
(2)
TYPE
(1)
DESCRIPTION
NO.
PWM2
This pin is multiplexed between PWM2, VPBE, and GPIO. For PWM2, it is output
PWM2.
For the VPBE, it is RGB888 Blue output bit 2 (B2).
For GPIO, it is GPIO47.
PWM1
PWM2/
B2/
GPIO47
A15
I/O/Z
IPD
(1)
(2)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal
IPD = Internal pulldown, IPU = Internal pullup. (To pull up a signal to the opposite supply rail, a 1-k
resistor should be used.)
Device Overview
47