![](http://datasheet.mmic.net.cn/370000/TMX320DM6446ZWT_datasheet_16742798/TMX320DM6446ZWT_112.png)
www.ti.com
P
5.8.2
GPIO Peripheral Input/Output Electrical Data/Timing
TMS320DM6446
Digital Media System on-Chip
SPRS283–DECEMBER 2005
Table 5-21. GPIO Registers (continued)
HEX ADDRESS RANGE
0x01C6 7034
ACRONYM
INSTAT01
REGISTER NAME
GPIO Banks 0 and 1 Interrupt Status Register (GPIO[0:31])
GPIO Banks 2 and 3
GPIO Banks 2 and 3 Direction Register (GPIO[32:63])
GPIO Banks 2 and 3 Output Data Register (GPIO[32:63])
GPIO Banks 2 and 3 Set Data Register (GPIO[32:63])
GPIO Banks 2 and 3 Clear Data Register (GPIO[32:63])
GPIO Banks 2 and 3 Input Data Register (GPIO[32:63])
SET_RIS_TRIG23
GPIO Banks 2 and 3 Set Rising Edge Interrupt Register (GPIO[32:63])
CLR_RIS_TRIG23
GPIO Banks 2 and 3 Clear Rising Edge Interrupt Register (GPIO[32:63])
SET_FAL_TRIG23
GPIO Banks 2 and 3 Set Falling Edge Interrupt Register (GPIO[32:63])
CLR_FAL_TRIG23
GPIO Banks 2 and 3 Clear Falling Edge Onterrupt Register (GPIO[32:63])
INSTAT23
GPIO Banks 2 and 3 Interrupt Status Register (GPIO[32:63])
GPIO Bank 4
DIR4
GPIO Bank 4 Direction Register (GPIO[64:70])
OUT_DATA4
GPIO Bank 4 Output Data Register (GPIO[64:70])
SET_DATA4
GPIO Bank 4 Set Data Register (GPIO[64:70])
CLR_DATA4
GPIO Bank 4 Clear Data Register (GPIO[64:70])
IN_DATA4
GPIO Bank 4 Input Data Register (GPIO[64:70])
SET_RIS_TRIG4
GPIO Bank 4 Set Rising Edge Interrupt Register (GPIO[64:70])
CLR_RIS_TRIG4
GPIO Bank 4 Clear Rising Edge Interrupt Register (GPIO[64:70])
SET_FAL_TRIG4
GPIO Bank 4 Set Falling Edge Interrupt Register (GPIO[64:70])
CLR_FAL_TRIG4
GPIO Bank 4 Clear Falling Edge Interrupt Register (GPIO[64:70])
INSTAT4
GPIO Bank 4 Interrupt Status Register (GPIO[64:70])
-
Reserved
0x01C6 7038
0x01C6 703C
0x01C6 7040
0x01C6 7044
0x01C6 7048
0x01C6 704C
0x01C6 7050
0x01C6 7054
0x01C6 7058
0x01C6 705C
DIR23
OUT_DATA23
SET_DATA23
CLR_DATA23
IN_DATA23
0x01C6 7060
0x01C6 7064
0x01C6 7068
0x01C6 706C
0x01C6 7070
0x01C6 7074
0x01C6 7078
0x01C6 707C
0x01C6 7080
0x01C6 7084
0x01C6 7088 - 0x01C6 7FFF
Table 5-22. Timing Requirements for GPIO Inputs
(1)
(see
Figure 5-15
)
-594
NO.
UNIT
MIN
52
52
MAX
1
2
t
w(GPIH)
t
w(GPIL)
Pulse duration, GPIx high
Pulse duration, GPIx low
ns
ns
(1)
The pulse width given is sufficient to generate a CPU interrupt or an EDMA event. However, if a user wants to have DM6446 recognize
the GPIx changes through software polling of the GPIO register, the GPIx duration must be extended to allow DM6446 enough time to
access the GPIO register through the internal bus.
Table 5-23. Switching Characteristics Over Recommended Operating Conditions for GPIO Outputs
(see
Figure 5-15
)
-594
MIN
26
(1)
26
(1)
NO.
PARAMETER
UNIT
MAX
3
4
t
w(GPOH)
t
w(GPOL)
Pulse duration, GPOx high
Pulse duration, GPOx low
ns
ns
(1)
This parameter value should not be used as a maximum performance specification. Actual performance of back-to-back accesses of the
GPIO is dependent upon internal bus activity.
Peripheral and Electrical Specifications
112