afs600 Actel Corporation, afs600 Datasheet - Page 59

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Read Operation
Read operations are designed to read data from the FB
Array, Page Buffer, Block Buffer, or status registers. Read
operations support a normal read and a read-ahead
mode (done by asserting READNEXT). Also, the timing
for Read operations is dependent on the setting of PIPE.
Figure 2-37 • Read Waveform (Non-Pipe Mode, 32-bit access)
Figure 2-38 • Read Waveform (Pipe Mode, 32-bit access)
DATAWIDTH[1:0]
DATAWIDTH[1:0]
STATUS[1:0]
STATUS[1:0]
ADDR[17:0]
ADDR[17:0]
RD[31:0]
RD[31:0]
BUSY
BUSY
REN
REN
CLK
CLK
A0
A0
0
0
0
0
A1
A1
A d v an c ed v1 . 4
D0
S0
D1
S1
S0
D0
The following diagrams illustrate representative timing
for Non-Pipe Mode
(Figure
A2
D2
S2
S1
D1
A3
A2
2-38) reads of the flash memory block interface.
S3
D3
S2
D2
A3
S3
D3
Actel Fusion Programmable System Chips
0
0
(Figure
0
0
A4
A4
2-37) and Pipe Mode
D4
X
S4
D4
S4
0
0
2-45