EMC12 ETC2 [List of Unclassifed Manufacturers], EMC12 Datasheet - Page 19

• Manufacturer Part Number: EMC12
• Description: Audio Interface for the EmPack System
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

1.3.2 Continuation Slots
Normally a time-slot carries a single, 8-bit data item across each TDM bus. However, the TDM system
allows the use of consecutive time-slots on the TDM bus to carry larger data items. Four time-slots, for
example, can be combined to carry a 32-bit word. The technique of using multiple time-slots to carry a
larger data item is called “slot continuation”. When slot continuation is selected for a TDM bus, the
FPGA continues driving DSP serial data onto the TDM bus without generating an OLD pulse. Similarly,
the TDM bus data is driven to the DSP serial input without a ILD pulse. The same concept is used for
transferring 16-bit data items to or from the Codecs, using pairs of consecutive 8-bit time slots.
09 Jan 2006
0x6 - 0x7
Table 1-18: DSP Destination Encoding
Value
0xA
0xB
0xC
0xD
0x0
0x1
0x2
0x3
0x4
0x5
0x8
0x9
0xE
0xF
Communication Automation Corporation
EMC12 Hardware Reference Manual
Meaning
DSP receives unconditionally from Bus A
DSP receives unconditionally from Bus B
DSP receives unconditionally from Bus C
DSP receives unconditionally from Bus D
DSP receives unconditionally from Bus E
DSP receives unconditionally from Bus F
Reserved
DSP receives conditionally from Bus A
DSP receives conditionally from Bus B
DSP receives conditionally from Bus C
DSP receives conditionally from Bus D
DSP receives conditionally from Bus E
DSP receives conditionally from Bus F
Continuation slot (no ILD)
No connection
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