TMP320C6720RFP300 datasheet(100/118 Pages) TI

100 / 118 page

4.16.2 RTI/Digital Watchdog Registers Description(s)

TMS320C6727B, TMS320C6726B, TMS320C6722B, TMS320C6720

Floating-Point Digital Signal Processors

SPRS370E – SEPTEMBER 2006 – REVISED JULY 2008

www.ti.com

The digital watchdog is disabled by default. Once enabled, a sequence of two 16-bit key values (0xE51A

followed by 0xA35C in two separate writes) must be continually written to the key register before the

watchdog counter counts down to zero; otherwise, the DSP will be reset. This feature can be used to

provide an added measure of robustness against a software failure. If the application fails and ceases to

write to the watchdog key; the watchdog will respond by resetting the DSP and thereby restarting the

application.

Note that Counter 0 and Compare 0 are used by DSP BIOS to generate the tick counter it requires;

however, Capture 0 is still available for use by the application as well as the remaining RTI resources.

Table 4-38 is a list of the RTI registers.

Table 4-38. RTI Registers

BYTE ADDRESS

DESCRIPTION

Device-Level Configuration Registers Controlling RTI

0x4000 0014

CFGRTI

Selects the sources for the RTI input captures from among the six McASP DMA event.

RTI Internal Registers

0x4200 0000

RTIGCTRL

Global Control Register. Starts / stops the counters.

0x4200 0004

Reserved

Reserved bit.

0x4200 0008

RTICAPCTRL

Capture Control. Controls the capture source for the counters.

0x4200 000C

RTICOMPCTRL

Compare Control. Controls the source for the compare registers.

0x4200 0010

RTIFRC0

Free-Running Counter 0. Current value of free-running counter 0.

0x4200 0014

RTIUC0

Up-Counter 0. Current value of prescale counter 0.

0x4200 0018

RTICPUC0

Compare Up-Counter 0. Compare value compared with prescale counter 0.

0x4200 0020

RTICAFRC0

Capture Free-Running Counter 0. Current value of free-running counter 0 on external

event.

0x4200 0024

RTICAUC0

Capture Up-Counter 0. Current value of prescale counter 0 on external event.

0x4200 0030

RTIFRC1

Free-Running Counter 1. Current value of free-running counter 1.

0x4200 0034

RTIUC1

Up-Counter 1. Current value of prescale counter 1.

0x4200 0038

RTICPUC1

Compare Up-Counter 1. Compare value compared with prescale counter 1.

0x4200 0040

RTICAFRC1

Capture Free-Running Counter 1. Current value of free-running counter 1 on external

event.

0x4200 0044

RTICAUC1

Capture Up-Counter 1. Current value of prescale counter 1 on external event.

0x4200 0050

RTICOMP0

Compare 0. Compare value to be compared with the counters.

0x4200 0054

RTIUDCP0

Update Compare 0. Value to be added to the compare register 0 value on compare

match.

0x4200 0058

RTICOMP1

Compare 1. Compare value to be compared with the counters.

0x4200 005C

RTIUDCP1

Update Compare 1. Value to be added to the compare register 1 value on compare

match.

0x4200 0060

RTICOMP2

Compare 2. Compare value to be compared with the counters.

0x4200 0064

RTIUDCP2

Update Compare 2. Value to be added to the compare register 2 value on compare

match.

0x4200 0068

RTICOMP3

Compare 3. Compare value to be compared with the counters.

0x4200 006C

RTIUDCP3

Update Compare 3. Value to be added to the compare register 3 value on compare

match.

0x4200 0070

Reserved

Reserved bit.

0x4200 0074

Reserved

Reserved bit.

0x4200 0080

RTISETINT

Set Interrupt Enable. Sets interrupt enable bits int RTIINTCTRL without having to do a

read-modify-write operation.

0x4200 0084

RTICLEARINT

Clear Interrupt Enable. Clears interrupt enable bits int RTIINTCTRL without having to

do a read-modify-write operation.

0x4200 0088

RTIINTFLAG

Interrupt Flags. Interrupt pending bits.

Peripheral and Electrical Specifications

100

Submit Documentation Feedback

TMP320C6720RFP300 bảng dữ liệu(PDF) 100 Page - Texas Instruments

TMP320C6720RFP300 bảng dữ liệu(HTML) 100 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL