Z87L0116ASC1937 Zilog, Z87L0116ASC1937 Datasheet - Page 31

• Manufacturer Part Number: Z87L0116ASC1937
• Description: IC FHSS PHONE CTRL 144-VQFP
• Manufacturer: Zilog

Specifications of Z87L0116ASC1937

• Controller Type: Phone Controller
• Interface: Bus
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 55mA
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

OPERATION (Continued)
Z87001/Z87L01
ROMless Spread Spectrum Cordless Phone Controller
The operation of the receive rate buffer is identical. The
Z87001 core processor must set the nibble address in
RX_BUF_ADDR,
RX_BUF_DATA. If the RX_AUTO_INCREMENT bit is set,
the read address is automatically incriminated (modulo 36
= number of nibbles in rate buffer) after each data read.
This allows the DSP core to read successive nibbles with-
out resetting the address each time.
Through its register interface, the Z87001 also controls
which rate buffer addresses the Z87010 ADPCM Proces-
sor can access. The nibble addresses are contained in the
31
Demodulator
Modulator
RX_BUF_DATA
then
Figure 9. Rate Buffers Access and ADPCM Processor Interface
read
TX_BUF_DATA
the
RX RATE BUFFER
TX RATE BUFFER
nibble
P R E L I M I N A R Y
DSP Core
Processor
RX_AUTO_INCR.
TX_AUTO_INCR.
Address
Decoder
TX_BUF_ADDR
RX_BUF_ADDR
from
TX_BUF_VP_ADDR and RX_BUF_VP_ADDR register
fields. After the Z87010 writes or reads a nibble to or from
transmit or receive rate buffer, the corresponding
“VP_ADDR” is automatically incriminated (modulo 36) to
the next accessible address. The locations of accessible
addresses are individually controlled by the Z87001 in the
three TX_RX_NIBBLE_MARKER register fields. A marker
bit equal to “1” enables the Z87010 to access the corre-
sponding address; a bit equal to “0” causes the Z87010’s
read or write access to skip to the next nibble that has a
marker bit equal to “1”.
RX_BUF_VP_ADDR
TX_BUF_VP_ADDR
TX_RX_NIBBLE_
MARKER
VP_COMMAND
VP_STATUS
ADPCM Proc.
Interface
Z87001
DS96WRL0800
Data
Addr
Ctrl
Zilog