HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 337

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

Bits 7 3: Reserved. These bits always read 0 and must be set to 0.
Bits 2 0 (PALW2 PALW0: PAL Area Wait): The functions of these bits are described below.
PALW2, PALW1, PALW0 = 0, 0, 0: Number of wait states = 0
PALW2, PALW1, PALW0 = 0, 0, 1: Number of wait states = 1
PALW2, PALW1, PALW0 = 0, 1, 0: Number of wait states = 2
PALW2, PALW1, PALW0 = 0, 1, 1: Number of wait states = 3
PALW2, PALW1, PALW0 = 1, 0, 0: Number of wait states = 4
PALW2, PALW1, PALW0 = 1, 0, 1: Number of wait states = 5
PALW2, PALW1, PALW0 = 1, 1, 0: Number of wait states = 6
PALW2, PALW1, PALW0 = 1, 1, 1: Number of wait states = 7
Note that PALW2, PALW1, and PALW0 are initialized to (1, 1, 1) at reset.
Bit name
Read/Write
Initial value
Note: Bit 7 to bit 3 are reserved. These bits always read 0 and must be set to 0.
—
—
7
0
—
—
6
0
—
—
5
0
—
—
4
0
— PALW2PALW1
—
3
0
R/W
Rev. 0, 07/98, page 321 of 453
2
1
PAL area wait
R/W
1
1
PALW0
R/W
0
1