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Contents
TMS320C6421
Fixed-Point Digital Signal Processor
SPRS346B–JANUARY 2007–REVISED APRIL 2007
5.3
Electrical Characteristics Over Recommended
Ranges of Supply Voltage and Operating
Temperature (Unless Otherwise Noted)
...........
116
Peripheral Information and Electrical
Specifications
.........................................
117
6.1
6.2
Recommended Clock and Control Signal Transition
Behavior
............................................
118
6.3
6.4
Enhanced Direct Memory Access (EDMA3)
Controller
...........................................
126
6.5
6.6
6.7
6.8
6.9
6.10
Universal Asynchronous Receiver/Transmitter
(UART)
.............................................
166
6.11
6.12
6.13
6.14
Multichannel Audio Serial Port (McASP0)
Peripheral
..........................................
188
6.15
6.16
6.17
6.18
6.19
6.20
6.21
Mechanical Data
.......................................
222
7.1
7.1.1
7.1.2
1
TMS320C6421 Fixed-Point Digital Signal
Processor
..................................................
1
1.1
1.2
1.3
Revision History
...............................................
6
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Device and Development-Support Tool
Nomenclature
.......................................
61
2.8
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
5
5.1
Absolute Maximum Ratings Over Operating
Temperature Range (Unless Otherwise Noted)
...
114
5.2
Features
..............................................
1
Description
............................................
2
Functional Block Diagram
............................
4
6
Parameter Information
.............................
117
Device Overview
.........................................
7
Device Characteristics
................................
7
C64x+ Megamodule
..................................
8
Memory Map Summary
.............................
18
Pin Assignments
....................................
20
Terminal Functions
..................................
29
Device Support
......................................
61
Power Supplies
....................................
118
Reset
...............................................
139
External Clock Input From MXI/CLKIN Pin
........
148
Clock PLLs
.........................................
150
Interrupts
...........................................
155
External Memory Interface (EMIF)
.................
158
Documentation Support
.............................
63
Device Configurations
.................................
64
System Module Registers
...........................
64
Power Considerations
...............................
65
Clock Considerations
................................
67
Boot Sequence
......................................
69
Configurations At Reset
.............................
78
Configurations After Reset
..........................
80
Multiplexed Pin Configurations
......................
84
Device Initialization Sequence After Reset
........
108
Debugging Considerations
.........................
110
System Interconnect
.................................
112
System Interconnect Block Diagram
...............
112
Device Operating Conditions
.......................
114
Inter-Integrated Circuit (I2C)
.......................
169
Host-Port Interface (HPI) Peripheral
...............
173
Multichannel Buffered Serial Port (McBSP)
........
180
Ethernet Media Access Controller (EMAC)
........
196
Management Data Input/Output (MDIO)
..........
205
Timers
..............................................
207
Pulse Width Modulator (PWM)
.....................
210
VLYNQ
.............................................
212
General-Purpose Input/Output (GPIO)
.............
216
IEEE 1149.1 JTAG
.................................
220
7
Thermal Data for ZWT
.............................
222
Thermal Data for ZDU
.............................
223
Packaging Information
.............................
223
Recommended Operating Conditions
.............
115
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