ZL38001 Data Sheet
4
Zarlink Semiconductor Inc.
548RinReceive PCM Signal Input (Input). 128 kbps to 4096 kbps serial PCM
input stream. Data may be in either companded or 2’s complement linear
format. This is the Receive Input channel from the line (or network) side.
Data bits are clocked in following SSI, GCI or ST-BUS timing requirements.
62SinSend PCM Signal Input (Input). 128 kbps to 4096 kbps serial PCM input
stream. Data may be in either companded or 2’s complement linear format.
This is the Send Input channel (from the microphone). Data bits are
clocked in following SSI, GCI or ST-BUS timing requirements.
73ICInternal Connection (Input). Must be tied to Vss.
85MCLKMaster Clock (Input). Nominal 20 MHz Master Clock input (may be
asynchronous relative to 8 KHz frame signal.) Tie together with MCLK2
(pin 33).
9,10,11 6, 7, 8 IC Internal Connection (Input). Must be tied to Vss.
12 9 LAW A/
Law Select (Input). When low, selects Law companded PCM.
When high, selects A-Law companded PCM. This control is for both serial
pcm ports.
13 11 FORMAT ITU-T/Sign Mag
(Input). When low, selects sign-magnitude PCM code.
When high, selects ITU-T (G.711) PCM code. This control is for both serial
pcm ports.
14 13 RESET
Reset / Power-down (Input). An active low resets the device and puts the
ZL38001 into a low-power stand-by mode.
17 16 SCLK Serial Port Synchronous Clock (Input). Data clock for the serial
microport interface.
18 17 CS
Serial Port Chip Select (Input). Enables serial microport interface data
transfers. Active low.
19 19 DATA2 Serial Data Receive (Input). In Motorola/National serial microport
operation, the DATA2 pin is used for receiving data. In Intel serial microport
operation, the DATA2 pin is not used and must be tied to Vss or Vdd.
20 21 DATA1 Serial Data Port (Bidirectional). In Motorola/National serial microport
operation, the DATA1 pin is used for transmitting data. In Intel serial
microport operation, the DATA1 pin is used for transmitting and receiving
data.
22 23 VDD Positive Power Supply (Input). Nominally 3.3 volts.
23 24 Sout Send PCM Signal Output (Output). 128 kbps to 4096 kbps serial PCM
output stream. Data may be in either companded or 2’s complement linear
PCM format. This is the Send Out signal after acoustic echo cancellation
and non-linear processing. Data bits are clocked out following SSI, ST-
BUS or GCI timing requirements.
24 26 Rout Receive PCM Signal Output (Output). 128 kbps to 4096 kbps serial PCM
output stream. Data may be in either companded or 2’s complement linear
PCM format. This is the Receive out signal after line echo cancellation non-
linear processing, AGC and gain control. Data bits are clocked out
following SSI, ST-BUS or GCI timing requirements.
Pin Description (continued)
SSOP
Pin #
TQFP
Pin #
Name Description
