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| 型号： | DSPAUDIOEVMMB1E |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 20/60页 |
| 文件大小： | 0K |
| 描述： | BOARD MOTHER DSP563XX |
| 标准包装： | 1 |
| 系列： | Symphony™ |
| 类型： | DSP |
| 适用于相关产品： | DSP563XX |
| 所含物品： | 主板 |
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DSPX374DB1
Chapter 5
DSP56374 Daughterboard
5.1
DSPX374DB1
This daughterboard supports all versions of the 56374. The following sections describe the jumper and switch options available on the
DSPX374DB1. The schematic for this daughterboard can be found in Appendix A.
5.2
Mode Selection
Various bootstrap modes can be selected via switch bank SW1. Table 5-1 shows the switch configuration for each available mode. See the
56374 User ’s Manual for full details on each mode.
Table 5-1. Mode Selection
MODD
0
0
0
0
1
1
1
1
1
1
MODC
0
1
1
1
0
0
1
1
1
1
MODB
1
0
1
1
0
1
0
1
1
1
MODA
0
1
0
1
1
1
0
0
0
1
Mode
Bootstrap SA in SPI mode
Bootstrap from SHI (slave SPI) mode
Bootstrap from SHI (slave I 2 C, HCKFR=1) mode
Bootstrap from SHI (slave I 2 C, HCKFR=0) mode
Bootstrap from SHI (serial EEPROM, HCKFR=1) mode
Bootstrap from SHI (serial EEPROM) mode
Bootstrap from SHI (serial SPI EEPROM) mode
Bootstrap SA (default HLX) in SPI mode
Bootstrap SA in I 2 C (HCKFR=0) mode
Bootstrap SA in I 2 C (HCKFR=1) mode
NOTE
All other modes are reserved and should not be used.
5.3
Memory
2
The DSPX37XDB1 daughterboard includes one 1Mx8 EEPROM accessed by an I C-compatible bus. This memory comes pre-programmed
with a basic audio passthru code to allow simple verification of the initial board operations. See Section 1.8, Running the Passthru Code for
more details.
5.4
JP12 – Clock Selection
Jumper bank JP12 allows for the following clocking modes:
XTAL – Clock DSP from 24.576MHz crystal at X1 using the DSP’s internal oscillator
EXT – Clock DSP from motherboard 24.576MHz clock source
OSC – Clock DSP from canned oscillator at U4 (not populated)
When using the XTAL clocking mode both XTAL jumpers must be placed (this is the default mode of operation). When using other clocking
modes, both XTAL jumpers must be removed. Only one clocking mode should be used at the same time
DSPAUDIOEVM Users Guide, Rev. 2.4
This document contains information on a new product. Specifications and information herein are subject ot change without notice.
14
Freescale Semiconductor
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