Texas Instruments VLYNQ Port Benutzerhandbuch
www.ti.com
1.3
Functional Block Diagram
Slave
config
bus
Interface
Master
config
Interface
bus
VLYNQ module
VLYNQ register
access
CPU/EDMA initiated
transfers to
remote device
Off chip
(remote)
device access
ARM/EDMA
memory
System
VLYNQ_SCRUN
VLYNQ_CLOCK
VLYNQ_RXD[3:0]
VLYNQ_TXD[3:0]
INT31
ARM interrupt
controller
VLQINT
1.4
Industry Standard(s) Compliance Statement
Introduction
•
Symmetric Operations
–
Transmit (TX) pins on the first device connect to the receive (RX) pins on the second device and
vice-versa.
vice-versa.
–
Data pin widths are automatically detected after reset
–
Re-request packets, response packets, and flow control information are all multiplexed and sent
across the same physical pins.
across the same physical pins.
–
Supports both host/peripheral and peer-to-peer communication models
•
Simple block code packet formatting (8b/10b)
•
Supports in-band and flow control
–
No extra pins are needed
–
Allows the receiver to momentarily throttle the transmitter back when overflow is about to occur
–
Uses the special built-in block code capability to interleave flow control information seamlessly with
user data
user data
•
Automatic packet formatting optimizations
•
Internal loopback modes are provided
•
Connects to legacy VLYNQ devices
shows a functional block diagram of the VLYNQ port.
Figure 1. VLYNQ Port Functional Block Diagram
VLYNQ is an interface defined by Texas Instruments and does not conform to any other industry standard.
VLYNQ Port
10
SPRUE36A – September 2007