Section 10 Port Output Enable (POE)
Rev. 3.00 Sep. 27, 2007 Page 382 of 758
REJ09B0243-0300
Figure 10.1 shows a block diagram of the POE.
ICSR1:
ICSR3:
OCSR1:
POECR1:
POECR2:
SPOER:
Input level control/status register 1
Input level control/status register 3
Output level control/status register 1
Port output enable control register 1
Port output enable control register 2
Software port output enable register
[Legend]
TIOC3B
TIOC4A
TIOC4C
TIOC4B
TIOC4D
Output level comparison circuit
OCSR1
ICSR1
Output level comparison circuit
Output level comparison circuit
Input level detection circuit
Falling edge
detection circuit
Low level
sampling circuit
POE3
POE1
POE0
ICSR3
Input level detection circuit
Falling edge
detection circuit
Low level
sampling circuit
POE8
P
φ
/8
P
φ
P
φ
/16
P
φ
/128
TIOC3D
High-impedance
request signal for MTU2
high-current pins
High-impedance
request signal for MTU2
channel 0 pins
Interrupt
request signal
Frequency
divider
POECR1,
POECR2
SPOER
High-impedance request/interrupt request generating circuit
*
Note:
*
This pin is supported only by the SH7125.
Figure 10.1 Block Diagram of POE
Содержание SH7124 R5F7124
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