M672061H
Table 1.
Programmable Half Full Flag Offset
I
8
0
0
0
...
1
...
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
16384-64
16384-32
0
0
0
0
0
0
0
0
8192 (Half Full)
Default Offset
I
7
0
0
0
I
6
0
0
0
I
5
0
0
0
I
4
0
0
0
I
3
0
0
0
I
2
0
0
0
I
1
0
0
1
I
0
0
1
0
Offset
0
32
64
Table 2.
Reset and Retransmit Single Device Configuration/Width Expansion Mode
Inputs
Mode
Reset
Retransmit
Read/Write
Note:
RS
0
1
1
RT
X
0
1
XI
0
0
0
Read Pointer
Location Zero
Location Zero
Increment
(1)
Internal Status
Write Pointer
Location Zero
Unchanged
Increment
(1)
EF
0
X
X
Outputs
FF
1
X
X
HF
1
X
X
1. Pointer will increment if flag is high.
Table 3.
Reset and First Load Truth Table
Depth Expansion/Compound Expansion Mode
Inputs
Mode
Reset First Device
Reset All Other Devices
Read/Write
Note:
RS
0
0
1
FL
0
1
X
XI
(1)
(1)
(1)
Internal Status
Read Pointer
Location Zero
Location Zero
X
Write Pointer
Location Zero
Location Zero
X
EF
0
0
X
Outputs
FF
1
1
X
1. XI is connected to XO of previous device.
See Figure 5.
7
4144K-AERO-04/07
ATMEL [ ATMEL CORPORATION ]
