Toshiba TMPR4925, Руководство пользователя

Страница: 65 / 590

Chapter 3 Signals
3-7
3.1.6 Serial I/O Interface Signals
Table 3.1.6 Serial I/O Interface Signals
Signal Name Type Description Initial State
CTS [1:0]
*
Input
PU
*
1
SIO Clear to Send
CTS
*
signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
RTS [1:0] * Output
PU * 1
SIO Request to Send
RTS * signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
RXD[1:0] Input
PU * 1
SIO Receive Data
Serial data input signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
TXD[1:0] 3-state
Output
PU * 1
SIO Transmit Data
Serial data output signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
SCLK Input
PU
External Serial Clock
SIO clock input signal. SIO0 and SIO1 share this signal.
The pin is shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
*
1: These signals are pulled up for channel 0 only. No pull-up resistor is provided for channel 1.
3.1.7 Timer Interface Signals
Table 3.1.7 Timer Interface Signals
Signal Name Type Description Initial State
TIMER[1:0] Output
PU
Timer Output
Timer output signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
TCLK Input
PU
External Timer Clock
Timer input clock signal. TMR0, TMR1, and TMR2 share this signal.
The pin is shared with other functions (refer to Section "3.3 Pin Multiplexing").
PIO input
3.1.8 Parallel I/O Interface Signals
Table 3.1.8 Parallel I/O Interface Signals
Signal Name Type Description Initial State
PIO[31:20] Input/output
PU
PIO Ports[31:20]
Parallel I/O signals.
The pins are shared with other functions, including PC trace (refer to Section "3.3 Pin
Multiplexing"). The boot configuration signal on the TDO pin determines whether the
signals are used for PC trace.
Selected by
TDO
H: PIO input
L: Output
(PC trace
function)
PIO[19:0] Input/output
PU * 1
PIO Ports[19:0]
Parallel I/O signals.
The pins are shared with other functions (refer to Section "3.3 Pin Multiplexing").
Input
*
1: PIO[17:12] do not have pull-up resistors.