Terminal Assignments And Signal Descriptions; Signal And Pad Descriptions For The C614 - Texas Instruments MSP50C614 User Manual

Terminal Assignments and Signal Descriptions

1.6 Terminal Assignments and Signal Descriptions
Table 1–1. Signal and Pad Descriptions for the C614
SIGNAL
PA 0 – PA 7
PB 0 – PB 7
PC 0 – PC 7
PD 0 – PD 7
PE 0 – PE 7
PF 0 – PF 7
PG 0 – PG 7
PG 8 – PG 15
Pins PD 4 and PD 5 may be dedicated to the comparator function, if the comparator enable bit is set.
Refer to Section 3.3, Comparator , for details. (Currently not supported)
SCANIN
SCANOUT
SCANCLK
SYNC
TEST
PGMPULSE
The scan port pins must be bonded out on any C614 production board.
Consult the "Important Note regarding Scan Port Bond Out", Section 7.1.1, Scan Port Bond Out .
OSC IN
OSC OUT
PLL
DAC P
DAC M
RESET
9, 19 † , 40, 64, 76
V SS
10, 21 † , 23, 41, 77
V DD
† Pads V SS (19) and V DD (21) service the DAC circuitry. Their pins tend to sustain a higher current draw. A dedicated decoupling
capacitor across these pins is therefore required. Refer to Section 6.1, Application Circuits , for details.
1-10
PAD NUMBER I/O
Input/Output Ports
75 68 I/O
85 78 I/O
8 1 I/O
18 11 I/O
63 56 I/O
31 24 I
49 42 O
39 32
Scan Port Control Signals
54 I
50 O
53 I
52 I
51 I
Oscillator Reference Signals
65 I
66 O
67 O
DAC Sound Output
22 O
20 O
Initialization
55 I
Power Signals
DESCRIPTION
Port A general-purpose I/O
Port B general-purpose I/O
Port C general-purpose I/O
Port D general-purpose I/O
Port E general-purpose I/O
Port F key-scan input
Port G dedicated output
Scan port data input
Scan port data output
Scan port clock
Scan port synchronization
C614 : test modes
P614 : programming pulse
Resistor/crystal reference in
Resistor/crystal reference out
Phase-lock-loop filter
Digital-to-analog output 1 (+)
Digital-to-analog output 2 (–)
Initialization
Ground
Processor power (+)
(1 Byte)
(1 Byte)
(1 Byte)
(1 Byte)
(1 Byte)
(1 Byte)
(2 Bytes)