Toshiba TLCS-900/H1 Series Manual page 96

3.5.12 Port F (PF0 to PF2, PF7)
Ports F0 to F2 are 3-bit general-purpose I/O ports. Each bit can be set individually for
input or output. Resetting sets PF0 to PF2 to be input ports. It also sets all bits of the
output latch register to "1". In addition to functioning as general-purpose I/O port pins, PF0
to PF2 can also function as the I/O for serial channels 0 and 1. A pin can be enabled for I/O
by writing a "1" to the corresponding bit of the port F function register (PFFC).
Port F7 is a 1-bit general-purpose output port. In addition to functioning as a
general-purpose output port , PF7 can also function as the SDCLK output. Resetting sets
PF7 to be an SDCLK output port.
(1) Port F0 (TXD0, TXD1), F1 (RXD0, RXD1), F2 (SCLK0,
Ports F0 to F2 are general-purpose I/O ports. They also function as either SIO0 or
SIO1. Each pin is detailed below.
PF0
PF1
PF2
(Clock input or output)
SIO mode UART, IrDA mode
(SIO0 module) (SIO0 module)
TXD0 TXD0
(Data output) (Data output)
RXD0 RXD0
(Data input) (Data input)
SCLK0
CTS
(Clear to send)
Reset
Direction control
PFCR write
Function control
PFFC write
S
Output latch
Selector
PF write
TXD0
TXD1
Selector
PF read
Figure 3.5.31 Port F0
92CH21-94
CTS0
SIO mode
(SIO1 module)
TXD1
(Data output)
RXD1
(Data input)
SCLK1
0
(Clock input or output)
S
Open drain
set possible
PFFC2<PF0F2>
S
B
A
TMP92CH21
SCLK1, )
CTS1
UART mode
(SIO1 module)
TXD1
(Data output)
RXD1
(Data input)
CTS 1
(Clear to send)
PF0 (TXD0, TXD1)
2009-06-19