Z8913820FSC View Datasheet(PDF) - Zilog

Part Name

Description

Manufacturer

Z8913820FSC

VOICE PROCESSING CONTROLLERS

Zilog 

Z89138/Z89139

Voice Processing Controllers

DSP Analog Data Registers

The D/A conversion is DSP driven by sending 10-bit data

to the EXT5 of the DSP. The six remaining bits of EXT5 are

not used (Figure 35).

Zilog

A/D supplies 8-bit data to the DSP through the register

EXT5 of the DSP. From the 16 bits of EXT5, only bits 2

through 9 are used by the A/D (Figure 36). Bits 0 and 1 are

padded with zeroes.

F E DCBA 9 8 7 6 5 4 3 2 1 0

Reserved

10-Bit Data for D/A

(Write Only)

Reserved

Figure 35. EXT5 Register D/A Mode Definition

F E D CBA 9 8 7 6 5 4 3 2 1 0

Reserved

8-Bit Data From A/D Converter

(Read Only)

Reserved

Figure 36. EXT5 Register A/D Mode Definition

48

PRELIMINARY

DS97TAD0201

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