TLK3104SCGNT

3.125Gbps QUAD SERIAL BACKPLANE TRANSCEIVER

SLLS537A − SEPTEMBER 2002 − REVISED JANUARY 2007

8

POST OFFICE BOX 655303

Terminal Functions (Continued)

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

Voltage Supply and Reference Pins

GND

B17, B15, B12, B9, E17, E14,

E11, E8−E5, H17, H14, H5, H3,

H2, J5, K17, K14, K5, K3, K2,

N5−N8, N11, N14, N17, T17, T15,

T12, T9

Ground

Digital logic ground. Supply reference for core logic.

GNDA

A4, B4, B7, C4, C7, E1−E3, F5,

G5, L5, M5, N1−N3, R4, R7, T4,

T7, U4

Ground

Analog ground. Provides ground for analog circuitry.

T−GND

F6−F12, G6−G12, H6−H12,

J6−12, K6−K12, L6−L12, M6−M12

Ground

Thermal grounds. Electrically connected to GND, these pins provide a thermal

path for heat dissipation.

VDD

D4, D7, E4, H1, H4, J4, K1, K4,

N4, P4, P7

Supply

Core supply (2.5 V), digital logic power. Provides power for all digital circuitry.

VDDA

A5−A7, C5, C6, F1, F3, G1, G3,

L1, L3, M1, M3, R5, R6, U5−U7

Supply

Analog voltage supply (2.5 V). Provides power for all analog circuitry.

VDDIO

A9, A12, A15, A17, D11, D14,

D17, G14, G17, J15, L14, L17,

P11, P14, P17, U9, U12, U15, U17

Supply

LVDS supply voltage (2.5 V)

detailed description

The TLK3104SCGNT has four operational modes controlled by the two configuration pins. These operational

modes are listed in Table 1. When the device is put in a certain mode, unused circuit blocks are powered down

to conserve the system power.

While the transceiver mode, transmit only mode, and receive only mode are straightforward, the repeater mode

of operation is shown in Figure 1. The receive serial data is recovered by the extracted clock and is then sent

back out on the transmit serial outputs. The data eye opens both vertically and horizontally in this process.

Table 1. Operational Modes

MODE

CONFIG0

CONFIG1

DESCRIPTION

1

0

0

Full duplex transceiver mode

2

0

1

Transmit only mode

3

1

0

Receive only mode

4

1

1

Repeater mode