RF112 datasheet(34/45 Pages) NXP

34 / 45 page

Table 7. Frequency generation specification

Parameter

Conditions

Min

Typ

Max

Unit

LVDS Differential Output Test Configuration

LVDS_160MHz_IO_P

LVDS_160MHz_IO_N

load

100 Ω

Figure 19. LVDS Load Termination

2. Please see the figure below that defines the Vcm and the VPP_SE versus VPP_DIFF

LVDS_160 MHz_IO_P

LVDS_160 MHz_IO_N

Vpp_diff = 2*Vpp_se

Vcm

Vpp_se

Vcm

Vpp_se

Figure 20. LVDS Signal Swing

3.7 Digital Interface

RF112 transceiver has two types of interfaces; one I2C interface for general non-time-

critical control, and one Lightweight LVDS Communication Protocol (LLCP) interface.

3.7.1 LLCP Interface Characteristics

The LLCP is a Lightweight Low-voltage differential signaling (LVDS) Communication

Protocol block. It provides high speed serial communication between the baseband SOC

and RF112 . It makes use of two signals, the serial data (DIN/DOUT) and the strobe

(SIN/SOUT). In the same fashion as the SpaceWire protocol, the clock is recovered

internally by XORing the data and the strobe lines. The LLCP supports 8b10b encoding/

decoding across both data and strobe pair.

Electrical characteristics

RF112 Transceiver Data Sheet, Rev. 1 Draft B, 05/2024

NXP Semiconductors

RF112 Datasheet(PDF) 34 Page - NXP Semiconductors