Section 16 I/O Ports
Rev. 3.00 Sep. 27, 2007 Page 566 of 758
REJ09B0243-0300
16.3.1 Register
Descriptions
Port E is a 16-bit input/output port in the SH7125 and a 12-bit input/output port in the SH7124.
Port E has the following registers. For details on register addresses and register states during each
processing, refer to section 20, List of Registers.
Table 16.5 Register Configuration
Register Name
Abbrevia-
tion
R/W
Initial Value Address
Access Size
Port E data register L
PEDRL
R/W
H'0000
H'FFFFD302
8, 16
Port E port register L
PEPRL
R
H'FFFFD31E
8,
16
16.3.2
Port E Data Register L (PEDRL)
PEDRL is a 16-bit readable/writable register that stores port E data. Bits PE15DR to PE0DR
correspond to pins PE15 to PE0 (multiplexed functions omitted here) in the SH7125. Bits
PE15DR to PE8DR and PE3DR to PE0DR correspond to pins PE15 to PE8 and PE3 to PE0,
respectively (multiplexed functions omitted here) in the SH7124.
When a pin function is general output, if a value is written to PEDRL, that value is output directly
from the pin, and if PEDRL is read, the register value is returned directly regardless of the pin
state.
When a pin function is general input, if PEDRL is read, the pin state, not the register value, is
returned directly. If a value is written to PEDRL, although that value is written into PEDRL, it
does not affect the pin state. Table 16.6 summarizes port E data register read/write operations.
Содержание SH7124 R5F7124
Страница 2: ...Rev 3 00 Sep 27 2007 Page ii of xx ...
Страница 8: ...Rev 3 00 Sep 27 2007 Page viii of xx ...
Страница 36: ...Section 1 Overview Rev 3 00 Sep 27 2007 Page 16 of 758 REJ09B0243 0300 ...
Страница 68: ...Section 2 CPU Rev 3 00 Sep 27 2007 Page 48 of 758 REJ09B0243 0300 ...
Страница 108: ...Section 5 Exception Handling Rev 3 00 Sep 27 2007 Page 88 of 758 REJ09B0243 0300 ...
Страница 166: ...Section 7 User Break Controller UBC Rev 3 00 Sep 27 2007 Page 146 of 758 REJ09B0243 0300 ...
Страница 400: ...Section 9 Multi Function Timer Pulse Unit 2 MTU2 Rev 3 00 Sep 27 2007 Page 380 of 758 REJ09B0243 0300 ...
Страница 724: ...Section 20 List of Registers Rev 3 00 Sep 27 2007 Page 704 of 758 REJ09B0243 0300 ...
Страница 772: ...Rev 3 00 Sep 27 2007 Page 752 of 758 REJ09B0243 0300 ...
Страница 778: ...Rev 3 00 Sep 27 2007 Page 758 of 758 REJ09B0243 0300 ...
Страница 781: ......
Страница 782: ...SH7125 Group SH7124 Group Hardware Manual ...