Analog Devices adsp-2100 User Manual

5 Serial Ports
5 – 10
SPORT0 Control Register: 0x3FF6
SPORT1 Control Register: 0x3FF2
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SLEN (Serial Word Length – 1)
For example, if you are using 8-bit serial words, set SLEN to 7 (0111
binary). The SLEN field is bits 3-0 in the SPORT control register (0x3FF6
for SPORT0 and 0x3FF2 for SPORT1). See Figure 5.4 on the next page.
Do not set SLEN to zero or one; these SLEN values are not permitted.
5.7 WORD FRAMING
OPTIONS
Framing signals identify the beginning of each serial word transfer. The
SPORTs have many ways of handling framing signals. Transmit and
receive framing are independent of each other. All frame sync signals are
sampled on the falling edge of the serial clock (SCLK).
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RFSR (Receive Frame Sync Required)
TFSR (Transmit Frame Sync Required)
SPORT0 Control Register: 0x3FF6
SPORT1 Control Register: 0x3FF2
TFSR 0= Transmit Frame Sync Required 1st Word
1= Transmit Frame Sync Required Every Word
RFSR 0= Receive Frame Sync Required 1st Word
1= Receive Frame Sync Required Every Word
Figure 5.4 SLEN Field In SPORT Control Register
Figure 5.5 TFSR And RFSR Bits In SPORT Control Register

Analog Devices adsp-2100 Specifications

General

Brand	Analog Devices
Model	adsp-2100
Category	Computer Hardware
Language	English