tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 87

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3.5.8
Port 9 (P90-P97)
or output. The control register P9CR is used to set the port for input or output. A reset clears P9CR to 0,
putting port 9 in input mode. In addition to functioning as an input/output port, the pins of this port can
also function as various input/output pins: P90 and P91 function as key input, P92 to P94 and P97 as
16-bit timer output, and P95 and P96 as 16-bit timer input. These functions are enabled by setting the
corresponding bits of P9FC to 1.
resistors, which are enabled only for those pins for which KWUPCNT<PE> is set to 1 in the key on
wake-up circuit and key input is enabled in KWUPSTn. For details, refer to the description of the key on
wake-up function. When a pin is functioning as a port pin, its pull-up resistor is disabled.
P9FC, so that the pins cannot be used as general-purpose port pins or peripheral function pins as
described above.
Port 9 is an 8-bit general-purpose input/output port whose bits can each be set independently for input
A reset clears P9CR and P9FC to 0, placing port 9 in input mode. Pins P90 and P91 have pull-up
When the DSU is enabled, port 9 functions as a DSU interface regardless of the settings in P9CR and
KEY8, 9
Direction Control
S
Write to P9CR
Output Latch
Write to P9
(bitwise)
Reset
Figure 0.19 Port 9 (P90, P91)
fs
TMP1942CY/CZ-86
TG
Function Control
Read P9
B
A
Output Buffer
DPE
Write to P9FC
Y
KEYmEN
STOP
DRIVE
PE
TMP1942CY/CZ
Reset
P90 (KEY8)
P91 (KEY9)