
CY28341
Document #: 38-07367 Rev. *A
Page 7 of 21
Byte 5: SDR/DDR Clock Register
Bit
7
@Pup
0
Pin#
45
Name
BUF_IN
threshold
voltage
FBOUT
DDRT/C5/SD
RAM(10,11)
DDRT/C4/SD
RAM(8,9)
DDRT/C3/SD
RAM(6,7)
DDRT/C2/SD
RAM(4,5)
DDRT/C1/SD
RAM(2,3)
DDRT/C0/SD
RAM(0,1)
Description
DDR Mode, BUF_IN threshold setting. 0 = 1.15V, 1 = 1.05VSDR Mode, BUF_IN
threshold setting. 0 = 1.35V, 1 = 1.25V
6
5
1
1
46
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
29,30
4
1
31,32
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
3
1
35,36
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
2
1
37,38
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
1
1
41,42
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
0
1
43,44
1 = output enabled (running). 0 = output disabled asynchronously in a LOW state.
Byte 6: Watchdog Register
Bit @Pup Pin#
7
1
6
0
Name
SRESET# 1 = Pin 26 is the input pin as PD# signal. 0 = Pin 26 is the output pin as SRESET# signal.
Frequency
Revert
out only.0 = selects frequency of existing H/W setting1 = selects frequency of the second to
last S/W setting (the software setting prior to the one that caused a system reboot).
WDTEST
WD-Test, ALWAYS program to
“
0.
”
WD Alarm This bit is set to
“
1
”
when the Watchdog times out. It is reset to
“
0
”
when the system clears the
WD time stamps (WD3:0).
WD3
This bit allows the selection of the time stamp for the Watchdog timer. See
Table 7
.
WD2
This bit allows the selection of the time stamp for the Watchdog timer. See
Table 7
.
WD1
This bit allows the selection of the time stamp for the Watchdog timer. See
Table 7
.
WD0
This bit allows the selection of the time stamp for the Watchdog timer. See
Table 7
.
Table 7. Watchdog Time Stamp
Description
26
This bit allows setting the Revert Frequency once the system is rebooted due to Watchdog time
5
4
0
0
3
2
1
0
0
0
0
0
WD3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
WD2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
WD1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
WD0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FUNCTION
Off
1 second
2 seconds
3 seconds
4 seconds
5 seconds
6 seconds
7 seconds
8 seconds
9 seconds
10 seconds
11 seconds
12 seconds
13 seconds
14 seconds
15 seconds