tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 184

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Input/Output Ports
7.10 Port 9 (P90 through P97)
The port 9 is a general-purpose, 8-bit input/output port. For this port, inputs and outputs can be specified in units
of bits by using the control register P9CR and the function registers P9FC1 and P9FC2. A reset allows all bits of
the output latch P9 to be set to "1," all bits of P9CR, P9FC1 and P9FC2 to be cleared to "0," and the port 9 to be
put in input mode.
Input is disabled right after reset. To enable input, set the corresponding bit of P9IE to “1”.
Besides the input/output port function, the port 9 performs other functions: P90 and P94 output HSIO/SI0 data,
P92 and P96 inputs and outputs SI0 CLK or inputs CTS, and P93 and P97 output a 16-bit timer.
P9 read
(function control)
(output control)
(output control)
(
open drain control
(input control)
(output latch)
P9PUP
P9FC1
P9CR
P9OD
P9IE
P9
)
HTXD0,
TXD2
Drive disabled
during STOP/ RESET
TMP19A44 (rev1.3) 7-36
0
1
Fig. 7.23 Port 9 (P90, P94)
1
0
PORT KEEP
TMP19A44
2010-04-01
Port 9
P90(HTXD0)
P94(TXD2)
RESET