Z16M1720ASG1868 Zilog, Z16M1720ASG1868 Datasheet - Page 189

• Manufacturer Part Number: Z16M1720ASG1868
• Description: IC PCMCIA INTERFACE 100-VQFP
• Manufacturer: Zilog

Specifications of Z16M1720ASG1868

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 100-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REGISTER BIT FUNCTIONS
UM008101-0601
Write Register Bit Functions
Figure 76.
Figure 77.
WR Ends 1/2 Cycle Early = 0
D7 D6 D5 D4 D3 D2 D1 D0
RD Ends 1/2 Cycle Early = 0
MREQ Ends 1/2 Cycle Early = 0
Write Register 0 Group
Write Register 1 Group
0 = Port B
0 = Port A
0
0
1
1
0
1
0
1
D7 D6 D5 D4 D3 D2 D1 D0
0
= Transfer
= Search
= Search/Transfer
Base Register Byte
→
→
Port A Starting Address
(Low Byte)
Port A Starting Address
(High Byte)
Block Length
(Low Byte)
Block Length
(High Byte)
Do not use
Port A
Port B
0
0
0
1
1
0
0
1
0
1
= Port A Address Decrements
= Port A Address Increments
= Port A Address Fixed
0 = Port A is Memory
0 = Port A is I/O
0 = IORQ Ends 1/2 Cycle Early
1
0
0
1
1
0
0
1
0
1
0
= Cycle Length = 4
= Cycle Length = 3
= Cycle Length = 2
= Do Not Use
Port A Variable
Timing Byte
Base Register Byte
<   % 2 7 2 G T K R J G T C N U
Direct Memory Access
7 U G T / C P W C N