SH7055S Datasheet, PDF (710/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

20.3.13 Port F Control Registers H and L (PFCRH, PFCRL)
Port F control registers H and L (PFCRH, PFCRL) are 16-bit readable/writable registers that select
the functions of the 16 multiplex pins in port F and the function of the CK pin. PFCRH selects the
functions of the pins for the upper 8 bits of port F, and PFCRL selects the functions of the pins for
the lower 8 bits.
PFCRH and PFCRL are initialized to H'0015 and H'5000, respectively, by a power-on reset
(excluding a WDT power-on reset), and in hardware standby mode. They are not initialized in
software standby mode or sleep mode.
Port F Control Register H (PFCRH)
Bit: 15
14
13
12
11
10
9
8
CKHIZ PF15MD — PF14MD — PF13MD — PF12MD
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W
R
R/W
R
R/W
R
R/W
Bit: 7
6
5
4
3
2
1
0
— PF11MD — PF10MD — PF9MD — PF8MD
Initial value: 0
0
0
1
0
1
0
1
R/W: R
R/W
R
R/W
R
R/W
R
R/W
• Bit 15—CKHIZ Bit: Selects the function of pin CK.
Bit: CKHIZ
0
1
Description
CK pin output
CK pin Hi-Z
(Initial value)
• Bit 14—PF15 Mode Bit (PF15MD): Selects the function of pin PF15/BREQ.
Bit 14: PF15MD
0
1
Expanded Mode
General input/output (PF15)
(Initial value)
Bus request input (BREQ)
Description
Single-Chip Mode
General input/output (PF15)
(Initial value)
General input/output (PF15)
Rev.2.0, 07/03, page 672 of 960