SH7047 Datasheet, PDF (573/764 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTMRISC engine Family/SH7000 Series

17.1.8 Port E Control Registers L1, L2, and H (PECRL1, PECRL2, and PECRH)
The port E control registers L1, L2, and H (PECRL1, PECRL2 and PECRH) are 16-bit
readable/writable registers that are used to select the multiplexed pin function of the pins on port
E.
Port E Control Registers L1, L2, and H (PECRL1, PECRL2, and PECRH)
Register Bit
Initial
Bit Name Value R/W
PECRH 15 to 12 
All 0 R
PECRH 11
PECRH 10
PE21MD1 0*²
PE21MD0 0*²
R/W
R/W
PECRH 9
PECRH 8
PE20MD1 0*²
PE20MD0 0*²
R/W
R/W
PECRH 7
PECRH 6
PE19MD1 0*²
PE19MD0 0*²
R/W
R/W
PECRH 5
PECRH 4
PE18MD1 0*²
PE18MD0 0*²
R/W
R/W
PECRH 3
PECRH 2
PE17MD1 0*²
PE17MD0 0*²
R/W
R/W
PECRH 1
PECRH 0
PE16MD1 0*²
PE16MD0 0*²
R/W
R/W
Description
Reserved
These bits are always read as 0 and should only be
written with 0.
PE21 Mode
Select the function of the PE21/PWOB/SCK4/A15 pin.
00: PE21 I/O (port)
10: SCK4 I/O (SCI)
01: PWOB output (MMT) 11: A15 output (BSC)
PE20 Mode
Select the function of the PE20/PVOB/TXD4/A14 pin.
00: PE20 I/O (port)
10: TXD4 output (SCI)
01: PVOB output (MMT) 11: A14 output (BSC)
PE19 Mode
Select the function of the PE19/PUOB/RXD4/A13 pin.
00: PE19 I/O (port)
10: RXD4 input (SCI)
01: PUOB output (MMT) 11: A13 output (BSC)
PE18 Mode
Select the function of the PE18/PWOA/A12 pin.
00: PE18 I/O (port)
10: Setting prohibited
01: PWOA output (MMT) 11: A12 output (BSC)
PE17 Mode
Select the function of the PE17/PVOA/WAIT/A11 pin.
00: PE17 I/O (port)
10: WAIT input (BSC)
01: PVOA output (MMT) 11: A11 output (BSC)
PE16 Mode
Select the function of the PE16/PUOA/UBCTRG/A10
pin.
00: PE16 I/O (port)
10: UBCTRG output (UBC)*¹
01: PUOA output (MMT) 11: A10 output (BSC)
Rev. 2.00, 09/04, page 533 of 720