Specifications

Peripheral Interfaces
 DSP56800 Hardware Interface Techniques 19
Figure 17. CAN Interface
4.3 Codec Interface (DSP56824)
The DSP56824EVM provides a 13-bit linear single-channel CODEC (Freescale MC145483,
designated as U10). The DSP56824 interfaces to the CODEC via the DSP’s Synchronous Serial
Interface (SSI) through the SSI enable connector, J1. This connector allows the SSI Port to either
control the on-board SSI CODEC or to control an off-board SSI device. Table 5 lists the J1 pin-outs.
The SSI port provides the CODEC’s clock, frame synchronization and data without the use of glue
logic; see Figure 18.
Table 4: CAN Header Description
J1 and J2
Pin # Signal Pin # Signal
1NC2NC
3 CANL 4 CANH
5GND6 NC
7NC8NC
9NC10NC
DSP56F805
MSCAN_TX
MSCAN_RX
CAN CONNECTOR
TXD
RXD
SLOPE
VREF
VCC
GND
CANL
PCA82C250T
1
3
5
7
2
4
6
8
X
1
2
120
CAN TERMINATION
CANH
J1
U20
1
4
8
+5.0V
3
5
2
DAISY-CHAIN
CAN CONNECTOR
7
6
X
X
X
X
X
X
1
3
5
7
2
4
6
8
X
J2
X
X
X
X
X
X
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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