HD6437020 Datasheet, PDF (420/507 Pages) Hitachi Semiconductor – SuperH™ RISC engine

14.3.4 Port B Control Registers (PBCR1 and PBCR2)
PBCR1 and PBCR2 are 16-bit read/write registers that select the functions of the sixteen
multiplexed pins of port B. PBCR1 selects the function of the top eight bits of port B; PBCR2
selects the function of the bottom eight bits of port B. PBCR1 and PBCR2 are initialized to
H'0000 by power-on resets but are not initialized for manual resets, standby mode, or sleep mode.
PBCR1:
Bit:
Bit name:
Initial value:
R/W:
15
PB15
MD1
0
R/W
14
PB15
MD0
0
R/W
13
PB14
MD1
0
R/W
12
PB14
MD0
0
R/W
11
PB13
MD1
0
R/W
10
PB13
MD0
0
R/W
9
PB12
MD1
0
R/W
8
PB12
MD0
0
R/W
Bit:
Bit name:
Initial value:
R/W:
7
PB11
MD1
0
R/W
6
PB11
MD0
0
R/W
5
PB10
MD1
0
R/W
4
PB10
MD0
0
R/W
3
PB9
MD1
0
R/W
2
PB9
MD0
0
R/W
1
PB8
MD1
0
R/W
0
PB8
MD0
0
R/W
• Bits 15 and 14 (PB15 mode (PB15MD1 and PB15MD0)): PB15MD1 and PB15MD0 select the
function of the PB15/TP15/IRQ7 pin.
Bit 15: PB15MD1
0
1
Bit 14: PB15MD0
0
1
0
1
Function
Input/output (PB15) (initial value)
Interrupt request input (IRQ7)
Reserved
Timing pattern output (TP15)
• Bits 13 and 12 (PB14 mode (PB14MD1 and PB14MD0)): PB14MD1 and PB14MD0 select the
function of the PB14/TP14/IRQ6 pin.
Bit 13: PB14MD1
0
1
Bit 12: PB14MD0
0
1
0
1
Function
Input/output (PB14) (initial value)
Interrupt request input (IRQ6)
Reserved
Timing pattern output (TP14)
HITACHI 408