NEC V850E/MA1 User Manual page 500

(b) Port CD mode control register (PMCCD)
This register can be read/written in 8-bit or 1-bit units.
Cautions 1. Do not perform the SDCLK and SDCKE output mode setting simultaneously. Be
2. When in single-chip mode 1, and in ROMless modes 0 and 1, bits 1 and 0 of the
7 6
PMCCD 0 0
Note In ROMless modes 0 and 1, and single-chip mode 1:
In single-chip mode 0:
Bit position Bit name
3
PMCCD3
2
PMCCD2
1
PMCCD1
0
PMCCD0
500
CHAPTER 14 PORT FUNCTIONS
sure to perform the SDCLK output mode setting before the SDCKE output mode
setting.
PMCCD register become SDCLK output mode and SDCKE output mode after the
reset is released, however, bits 3 and 2 become UBE output mode and LBE output
mode. When using SDRAM be sure to set the SDRAS output mode and SDCAS
output mode using the PFCCD register.
5 4 3
0 0 PMCCD3 PMCCD2 PMCCD1 PMCCD0 FFFFF04EH
Port Mode Control
Specifies operation mode of PCD3 pin.
0: I/O port mode
1: UBE/SDRAS output mode
Port Mode Control
Specifies operation mode of PCD2 pin.
0: I/O port mode
1: LBE/SDCAS output mode
Port Mode Control
Specifies operation mode of PCD1 pin.
0: I/O port mode
1: SDCLK output mode
Port Mode Control
Specifies operation mode of PCD0 pin.
0: I/O port mode
1: SDCKE output mode
User's Manual U14359EJ4V0UM
2 1 0
0FH
00H
Function
Note
Address After reset
00H/0FH