| Monaco Technical Reference | Spectrum Signal Processing | 
| DSP~LINK3 Interface | 
 | 
Table 10 DSP~LINK3 Data Transfer Operating Modes
| 
 | Base | ASTRB_EN | 
 | 
| Mode | Address | Bit | Description | 
| 
 | 
 | 
 | 
 | 
| Standard | 0160 0000h | x | For slave boards that are similar to DSP~LINK1 | 
| Access | 
 | 
 | slave boards and operate with a fixed access | 
| 
 | 
 | 
 | time. | 
| 
 | 
 | 
 | 
 | 
| Standard | 0164 0000h | 0 | For DSP~LINK3 slave boards that have fast, | 
| Fast | 
 | 
 | fixed access time. This memory space is | 
| Access | 
 | 
 | shared with the Address Strobe Control | 
| 
 | 
 | 
 | operating mode. | 
| Address | 0164 0000h | 1 | For slave boards that require more than the | 
| Strobe | 
 | 
 | 16 KWords of addressing provided by the | 
| Control | 
 | 
 | standard DSP~LINK3 address lines. The bus | 
| 
 | 
 | 
 | master uses the /ASTRB cycle to place the | 
| 
 | 
 | 
 | page address onto the DSP~LINK3 data lines. | 
| 
 | 
 | 
 | It determines which address page is accessed | 
| 
 | 
 | 
 | on the slave board. This allows access to up to | 
| 
 | 
 | 
 | 214 address pages with each address page | 
| 
 | 
 | 
 | having an address depth of 214. The /ASTRB | 
| 
 | 
 | 
 | Cycle has the same timing as the Standard | 
| 
 | 
 | 
 | Fast transfer cycle. | 
| 
 | 
 | 
 | 
 | 
| Ready | 0168 0000h | x | For DSP~LINK3 slave boards that require | 
| Control | 
 | 
 | variable length access times. /DSTRB is active | 
| Access | 
 | 
 | until the slave asserts the DSP~LINK3 ready | 
| 
 | 
 | 
 | signal (/RDY) to end the cycle. | 
5.2.Address Strobe Control Mode
The Address Strobe Control mode uses the same node A 64K address space as the Standard Fast Access mode. The Address Strobe Control mode is enabled for this space by setting bit D1, the ASTRB_EN bit, of the DSP~LINK3 register to “1”. This register is located at address 016D 8018h of node A. Standard Fast Access mode writes will now generate /ASTRB cycles. The DSP~LINK3 slave attached to the Monaco board should then latch the lower addresses.
| 30 | Part Number  | 
| 
 | Revision 2.00 |