HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 420

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

14.3.4
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 15: PB15MD1
0
1
•
Bit 13: PB14MD1
0
1
HITACHI 408
Bits 15 and 14 (PB15 mode (PB15MD1 and PB15MD0)): PB15MD1 and PB15MD0 select the
function of the PB15/TP15/IRQ7 pin.
Bits 13 and 12 (PB14 mode (PB14MD1 and PB14MD0)): PB14MD1 and PB14MD0 select the
function of the PB14/TP14/IRQ6 pin.
Initial value:
Initial value:
Bit name:
Bit name:
Port B Control Registers (PBCR1 and PBCR2)
R/W:
R/W:
Bit:
Bit:
PB15
PB11
MD1
MD1
R/W
R/W
Bit 14: PB15MD0
0
1
0
1
Bit 12: PB14MD0
0
1
0
1
15
0
7
0
PB15
PB11
MD0
MD0
R/W
R/W
14
0
6
0
PB14
PB10
MD1
MD1
R/W
R/W
13
0
5
0
Function
Input/output (PB15) (initial value)
Interrupt request input (IRQ7)
Reserved
Timing pattern output (TP15)
Function
Input/output (PB14) (initial value)
Interrupt request input (IRQ6)
Reserved
Timing pattern output (TP14)
PB14
PB10
MD0
MD0
R/W
R/W
12
0
4
0
PB13
MD1
MD1
R/W
PB9
R/W
11
0
3
0
PB13
MD0
MD0
R/W
PB9
R/W
10
0
2
0
PB12
MD1
MD1
R/W
PB8
R/W
9
0
1
0
PB12
MD0
MD0
R/W
PB8
R/W
8
0
0
0