Flow Control - Texas Instruments SPRU938B User Manual

www.ti.com
Example 1. Address Translation Example
The remote address 0400:0154h (or 0000 0054h) was translated to 8200:0054h on the DM643x (local)
device in this example.
The translated address for packets received on the serial interface is determined as follows:
If (RX Packet Address < RX Address Map Size 1 Register) {
Translated Address = RX Packet Address +
} else if (RX Packet Address < (RX Address Map Size 1 Register +
RX Address Map Size 2 Register)) {
Translated Address = RX Packet Address +
} else if (RX Packet Address < (RX Address Map Size 1 Register +
Translated Address = RX Packet Address +
RX Address Map Offset 3 Register -
} else if (RX Packet Address < (RX Address Map Size 1 Register +
Translated Address = RX Packet Address +
RX Address Map Offset 4 Register -
} else {
Translated Address = 0x0
}
2.9

Flow Control

The VLYNQ module includes flow control features. The VLYNQ module automatically generates flow
control enable requests, /P/, when the RX/inbound FIFOs (FIFO1 and FIFO2) resources are consumed.
The FIFOs can take up to 16 32-bit words.
The remote device will begin transmitting idles, /I/, starting on the first byte boundary following reception of
the request. When sufficient RX FIFO resources have been made available, a flow control disable request,
/C/, is transmitted to the remote device. In response, the remote device will resume transmission of data.
See Appendix A.
SPRU938B – September 2007
Submit Documentation Feedback
RX Address Map Offset 1 Register
RX Address Map Offset 2 Register -
RX Address Map Size 1 Register
RX Address Map Size 2 Register +
RX Address Map Size 3 Register)) {
RX Address Map Size 1 Register -
RX Address Map Size 2 Register
RX Address Map Size 2 Register +
RX Address Map Size 3 Register +
RX Address Map Size 4 Register)) {
RX Address Map Size 1 Register -
RX Address Map Size 2 Register -
RX Address Map Size 3 Register
Peripheral Architecture
VLYNQ Port 19