AMBE-1000 Digital Voice Systems, Inc., AMBE-1000 Datasheet - Page 70

• Manufacturer Part Number: AMBE-1000
• Manufacturer: Digital Voice Systems, Inc.

8.1.2
MC14LC5480 *
Selection for
The AMBE-1000 is not recommended for new designs.
Please refer to the AMBE-2000/2020 product line.
Motorola MC14LC5480
Reference : Motorola Communications Device Data, DL136/D REV 4 Q1/96, pages 2-
1067 through 2-1088.
The Motorola MC14LC5480 can be used in either Alaw or law mode. Figure 8-C shows
the recommended circuit which generates the clock and strobe signals for the AMBE-
1000™ and the MC14LC5480. The AMBE-1000™ Vocoder Chip C_SEL[2-0] pins must
be set according to Table 5-A.
Figure 8-C Digital Interfacing to the Motorola MC14LC5480
* see Table 5-A.
Figure 8-D Timing Diagram for MC14LC5480 Interface
2.048 MHz
TX_O_CLK , BCLKR, BCLKT
C_SEL2 (pin 90)
C_SEL1 (pin 89)
C_SEL0 (pin 88)
A: RCO Output, 8 kHz Pulse
Clock
2.048 Clock ; RX_I_CLK
The AMBE-1000 is not recommended for new designs.
Please refer to the AMBE-2000/2020 product line.
AMBE-1000
256. RCO
TX_DO / DR
Divide by
DT / RX_DI
Output
RX_STRB
TX_STRB
FSR, FST
TX_O_CLK (pin 80)
RX_I_CLK (pin 81)
RX_STRB (pin 82)
TX_STRB (pin 79)
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TX_DO (pin 78)
RX_DI (pin 84)
A
D Q
Q
page 70
B7
B7
D Q
Q
B6
B6
B5
B5
B4
B4
FSR
BCLKR
DR
FST
BCLKT
DT
B3
B3
MC14LC5480