S6006 AMCC (Applied Micro Circuits Corp), S6006 Datasheet - Page 4

• Manufacturer Part Number: S6006
• Description: S3015/s3016 Evaluation Board
• Manufacturer: AMCC (Applied Micro Circuits Corp)

Table 2. Operating Frequencies
Overhead Processor Connections - Transmitter
RESET. TTL Input. Initializes the S3015 to a known
logic state.
SERDATIP/N. Differential AC-coupled PECL. SMA
connector that drives the serial data inputs to the CMI
encoder circuit. This input should be supplied with
NRZ data at the appropriate data rate. (See Table 2.)
REFCKIN. TTL input. SMA connector that must be
supplied with the correct reference clock frequency.
(See Table 2.) Used by the S3015 to synthesize the
serial clock.
SERDATOP/N. Differential PECL. This output is the
delayed version of the incoming data stream updated
on the falling edge of SERCLKOP/N.
SERCLKOP/N. Differential PECL. This output is
phase-aligned with SERDATOP/N.
DIP Switch - Transmitter
An onboard DIP switch provides additional control ca-
pability on the transmitter board. The following five
signals are controlled by means of the DIP switch:
SERDATEN. TTL input. Enables the loopback path
from the S3015 to the S3016. The data from the
SERDATIP/N inputs will be CMI-encoded and sent to
the S3016, where it will be decoded and output on
the SERDATOP/N pins.
XFRMEN. TTL input. Enables the transformer outputs
TX_OUT and MON_OUT.
CMISEL. TTL input. Selects CMI or NRZ. Logic High
selects CMI mode, and Logic Low selects NRZ mode.
DLCV. Singled-ended PECL input. Only active in CMI
mode. Set High to force a CMI line code violation.
TSTCLKEN. TTL input. Enables the reference clock
to be used instead of the VCO for testing, allowing a
means of testing chip functions without the use of the
PLL.
Overhead Processor Connections - Receiver
RESET. TTL Input. Initializes the S3016 to a known
logic state.
SERDATIP/N. Differential PECL. Clock is recovered
from transitions on these inputs.
Page 4
STS-3 CMI
E4 CMI
S3015/S3016 EVALUATION BOARD
MODE
(REFCKIN/P) MHz
REF CLK FREQ
19.44
17.408
(SERDATIP/N, TX_OUT) Mbits/s
October 23, 1995
SERIAL DATA RATE
155.52
139.264
REFCKIN. TTL input. SMA connector that must be
supplied with the correct reference clock frequency.
(See Table 2.) Used by the S3016 to initialize the
receive clock recovery PLL. The reference clock must
be present during reset to guarantee initialization of
the PLL circuits.
SERDATOP/N. Differential AC-coupled PECL output.
SMA connector that drives the decoded CMI data to
the overhead processor.
SERCLKOP/N. Differential PECL. This output is
phase-aligned with SERDATOP/N.
LOSOUT. TTL output. When High, this signal indi-
cates that the clock recovery PLL is detecting valid
data at the serial data inputs and is attempting to lock
to it. When Low, the clock recovery PLL is locked to
REFCKIN.
REFCKOUT. TTL input. Clock output that is at the
same frequency as the REFCKIN input.
DIP Switch - Receiver
An onboard DIP switch provides additional control ca-
pability on the receiver board. The following four sig-
nals are controlled by means of the DIP switch:
LOSOPT. PECL. Active Low. This input is driven by
the external optical receiver module to indicate a loss
of received optical power.
CMISEL. TTL input. A Logic High selects CMI mode;
a Logic Low selects NRZ.
EQUALSEL.
ANDATIN. A Logic Low selects SERDATIP/N.
TSTCLKEN. TTL. Active High. Enables the reference
clock to be used in place of the VCO for testing.
Allows a way to test the chip without the use of the
PLL.
CRYSTAL REFERENCE
A 19.44 MHz or a 17.408 MHz differential ECL crystal
oscillator can be used for the reference clock. One
19.44 MHz crystal is provided on each board. If a
17.408 MHz reference frequency is needed, AMCC
can recommend crystal vendors.
JUMPER CONFIGURATION
The jumpers labeled JP1 on both boards allow the
user to control whether an onboard crystal reference
or external clock reference is used (see Crystal Ref-
erence above). Jumper A is installed when an exter-
nal reference is used, and Jumper B is installed when
the onboard crystal reference is used.
6195 Lusk Blvd., San Diego, CA 92121 • [phone]
TTL input. A Logic High selects
Applied Micro Circuits Corporation
S6006