TMP92xy26AXBG Toshiba, TMP92xy26AXBG Datasheet - Page 234

• Manufacturer Part Number: TMP92xy26AXBG
• Manufacturer: Toshiba

Specifications of TMP92xy26AXBG

• Package: FPGA228
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): Romless
• Rom Combinations: Romless
• Ram Combinations: 144/288
• Architecture: 32-bit CISC
• Usb/spi Channels: 1/1
• Uart/sio Channels: 2
• I2c/sio Bus Channels: 1
• (s)dram Controller: 1
• Adc 10-bit Channel: 6
• Da Converter: -
• Timer 8-bit Channel: 8
• Timer 16-bit Channel: 2
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 136
• Power Supply Voltage(v): 3.0 to 3.6

SRS2 SRS1 SRS0
SDRCR<SRS2:0>
0
0
0
0
1
1
1
1
(6) Refresh control
0
0
1
1
0
0
1
1
(a) Auto Refresh
Note: A system reset disables the Auto Refresh function.
Note1: Set the interval of Auto Refresh as below table for your reference.
Note2: Take care SDRAM specification and CPU operation speed, please.
Note: Above gray zone is prohibited to set. SDRAM request: 4096 times per 64mS.
The TMP92CF26A supports two kinds of refresh commands: Auto Refresh and Self Refresh.
intervals specified by SDRCR<SRS2:0>. The Auto Refresh interval can be specified in a
range of 47 states to 1248 states (0.78 μs to 20.8 μs at f
command is being executed. Figure 3.10.6 shows the Auto Refresh cycle timing, and Table
3.10.3 shows the Auto Refresh interval settings. The Auto Refresh function cannot be used
in IDLE1 and STOP modes. In these modes, use the Self Refresh function to be explained
next.
0
1
0
1
0
1
0
1
When SDRCR<SRC> is set to “1”, the Auto Refresh command is automatically issued at
The CPU operation (instruction fetch and execution) is halted while the Auto Refresh
interval
state
1248
156
312
468
624
936
47
78
Table 3.10.3 System clock speed & auto refresh interval
1248.0 624.0
156.0
312.0
468.0
624.0
936.0
47.0
78.0
1
Figure 3.10.6 Auto Refresh Cycle Timing
156.0
234.0
312.0
468.0
23.5
39.0
78.0
2
SDLUDQM
SDLLDQM
SDRAS
SDCAS
SDWE
SDCKE
SDCLK
15.67
104.0
156.0
208.0
312.0
416.0
SDCS
26.0
52.0
3
92CF26A-232
11.75
117.0
156.0
234.0
312.0
19.5
39.0
78.0
4
Frequency: system clock [ MHz ]
Time: auto refresh interval [ μS ]
104.0
156.0
208.0
7.83
13.0
26.0
52.0
78.0
6
Auto Refresh
2 states
117.0
156.0
5.88
9.75
19.5
39.0
58.5
78.0
8
15.60
124.8
4.70
7.80
31.2
46.8
62.4
93.6
10
SYS
= 60 MHz).
15.60
2.35
23.4
31.2
46.8
62.4
20
3.9
7.8
15.60
1.57
2.60
5.20
10.4
20.8
31.2
41.6
30
15.60
1.18
1.95
3.90
7.80
11.7
23.4
31.2
40
TMP92CF26A
15.60
2009-06-25
0.78
1.30
2.60
5.20
7.80
10.4
20.8
60
11.70
15.60
0.59
0.98
1.95
3.90
5.85
7.80
80