tmp19a61f10xbg TOSHIBA Semiconductor CORPORATION, tmp19a61f10xbg Datasheet - Page 154

• Manufacturer Part Number: tmp19a61f10xbg
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

7.19 Port I (PI0~PI7)
The port I is a general-purpose, 8-bit input/output port. For this port, inputs and outputs can
be specified in units of bits. Outputs can be set by using the control register PICR and the
function register PIFCx. A reset allows all bits of the PI to be set to "1," all bits of PICR,
PIFC1 and PIFC2 to be cleared to "0," and the port I to be put in output disable mode.
Besides the input/output port function, the port I performs other functions: PI0 through PI2
and PI4 through PI6 have a serial communication function (SIO/UART ch6 and ch7). PI3
input external interrupt (INTB).
If the port I is used as UART/SIO function port, select the function with the function register
of the corresponding port and set the open drain control register along with the serial
setting register. When the function registers 1 and 2 are set as the port, please do not set
any other function.
PI read
(Function control)
(Output control)
(Select control)
(Input control)
(Output latch)
(Open drain
PIFC1
PISEL
PIOD
PICR
control)
PIIE
PI
TMP19A61(rev1.0) 7-153
Fig. 7.37 Port I (PI0,PI4)
STOP/RESET
drive disable
TXD6
TXD7 1
0
1
0
TMP19A61
Port I
PI0,PI4
(TXD6,TXD7)