Owner's manual

DS3131
14 of 174
3. SIGNAL DESCRIPTION
3.1 Overview/Signal List
This section describes the input and output signals on the DS3131. Signal names follow a convention
that is shown in the Signal Naming Convention table below. Table 3-A
lists all of the signals, their signal
type, description, and pin location.
Signal Naming Convention
FIRST LETTER SIGNAL CATEGORY SECTION
R Receive Serial Port 3.2
T Transmit Serial Port 3.2
L Local Bus 3.3
J JTAG Test Port 3.4
P PCI Bus 3.5
LXXX–T/RXXX: Multiplexed local bus with extended ports controlled by LBPXS.
Table 3-A. Signal Description
PIN NAME TYPE FUNCTION
W20 TC0 I Transmit Serial Clock for Port 0
U19 TC1 I Transmit Serial Clock for Port 1
T17 TC2 I Transmit Serial Clock for Port 2
U20 TC3 I Transmit Serial Clock for Port 3
T19 TC4 I Transmit Serial Clock for Port 4
R18 TC5 I Transmit Serial Clock for Port 5
R19 TC6 I Transmit Serial Clock for Port 6
P18 TC7 I Transmit Serial Clock for Port 7
P20 TC8 I Transmit Serial Clock for Port 8
N19 TC9 I Transmit Serial Clock for Port 9
M17 TC10 I Transmit Serial Clock for Port 10
M19 TC11 I Transmit Serial Clock for Port 11
L19 TC12 I Transmit Serial Clock for Port 12
L20 TC13 I Transmit Serial Clock for Port 13
K19 TC14 I Transmit Serial Clock for Port 14
J20 TC15 I Transmit Serial Clock for Port 15
J18 TC16 I Transmit Serial Clock for Port 16
H19 TC17 I Transmit Serial Clock for Port 17
G20 TC18 I Transmit Serial Clock for Port 18
F20 TC19 I Transmit Serial Clock for Port 19
F19 TC20 I Transmit Serial Clock for Port 20
G17 TC21 I Transmit Serial Clock for Port 21
E19 TC22 I Transmit Serial Clock for Port 22
E18 TC23 I Transmit Serial Clock for Port 23
C20 TC24 I Transmit Serial Clock for Port 24
D18 TC25 I Transmit Serial Clock for Port 25
B20 TC26 I Transmit Serial Clock for Port 26
B19 TC27 I Transmit Serial Clock for Port 27
V19 TD0 O Transmit Serial Data for Port 0
U18 TD1 O Transmit Serial Data for Port 1
V20 TD2 O Transmit Serial Data for Port 2