ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆꢃ ꢅ
ꢇ ꢈꢉ ꢈꢊꢋ ꢌ ꢀꢈ ꢉꢍ ꢋ ꢌ ꢎ ꢏꢐ ꢆꢑ ꢀꢀ ꢐꢏ
SGUS014H − FEBRUARY 1991 − REVISED JUNE 2004
Pin Functions (Continued)
CONDITIONS
WHEN
SIGNAL IS Z TYPE
PIN
†
DESCRIPTION
TYPE
‡
QTY
NAME
§
SERIAL PORT 0 SIGNALS
Serial port 0 transmit clock. CLKX0 is the serial-shift clock for the serial port 0
transmitter.
CLKX0
DX0
1
1
1
I/O/Z
S
S
S
R
R
R
I/O/Z Data transmit output. Serial port 0 transmits serial data on DX0.
Frame synchronization pulse for transmit. The FSX0 pulse initiates the transmit-data
process over DX0.
FSX0
I/O/Z
CLKR0
DR0
1
1
I/O/Z Serial port 0 receive clock. CLKR0 is the serial-shift clock for the serial port 0 receiver.
I/O/Z Data receive. Serial port 0 receives serial data on DR0.
S
S
R
R
Frame synchronization pulse for receive. The FSR0 pulse initiates the receive-data
process over DR0.
FSR0
1
I/O/Z
S
R
SERIAL PORT 1 SIGNALS
Serial port 1 transmit clock. CLKX1 is the serial-shift clock for the serial port 1
transmitter.
CLKX1
DX1
1
1
1
I/O/Z
S
S
S
R
R
R
I/O/Z Data transmit output. Serial port 1 transmits serial data on DX1.
Frame synchronization pulse for transmit. The FSX1 pulse initiates the transmit-data
process over DX1.
FSX1
I/O/Z
CLKR1
DR1
1
1
I/O/Z Serial port 1 receive clock. CLKR1 is the serial-shift clock for the serial port 1 receiver.
I/O/Z Data receive. Serial port 1 receives serial data on DR1.
S
S
R
R
Frame synchronization pulse for receive. The FSR1 pulse initiates the receive-data
process over DR1.
FSR1
1
1
1
I/O/Z
S
S
S
R
R
R
TIMER 0 SIGNALS
Timer clock 0. As an input, TCLK0 is used by timer 0 to count external pulses. As an
output, TCLK0 outputs pulses generated by timer 0.
TCLK0
TCLK1
I/O/Z
TIMER 1 SIGNALS
Timer clock 1. As an input, TCLK1 is used by timer 1 to count external pulses. As an
output, TCLK1 outputs pulses generated by timer 1.
I/O/Z
SUPPLY AND OSCILLATOR SIGNALS (see Note 1)
¶
¶
¶
¶
¶
¶
V
4
2
2
1
2
1
4
4
2
I
I
I
I
I
I
I
I
I
5-V supply
5-V supply
5-V supply
5-V supply
5-V supply
5-V supply
Ground
DD
IODV
DD
ADV
PDV
DDV
DD
DD
DD
MDV
DD
V
SS
DV
CV
Ground
SS
SS
Ground
†
‡
§
¶
I = input, O = output, Z = high-impedance state, NC = no connect
For GB package
S = SHZ active, H = HOLD active, R = RESET active
Recommended decoupling capacitor is 0.1 µF.
NOTE 1: CV , V , and IV
are on the same plane.
SS SS
SS
8
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
TI [ TEXAS INSTRUMENTS ]
