ADM6992CXABT1XP Lantiq, ADM6992CXABT1XP Datasheet - Page 25

• Manufacturer Part Number: ADM6992CXABT1XP
• Manufacturer: Lantiq

Specifications of ADM6992CXABT1XP

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Commercial
• Package Type: LQFP
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Supplier Unconfirmed

NINJA C/CX (NINJA C/CX (ADM6992C/CX)) Media Converter is connected. This link loss can then be sensed
and reported by a Network Management agent in the remote UTP port’s host equipment. This feature will affect
the NINJA C/CX (NINJA C/CX (ADM6992C/CX)) UTP LNK LED.
The NINJA C/CX (NINJA C/CX (ADM6992C/CX)) Media Converter also incorporates a Far End Fault feature,
which allows the stations on both ends of a pair of fibers to be informed when there is a problem with one of the
fibers. Without Far End Fault, it is impossible for a fiber interface to detect a problem that affects only its
Transmitting fiber.
When Far End Fault is supported and enabled, a loss of received signal (link) will cause the transmitter to generate
a Far End Fault pattern in order to inform the device at the far end of the fiber pair that a fault has occurred. Unless
Fiber Link Loss occurs or if the UTP port link fails, the NINJA C/CX (NINJA C/CX (ADM6992C/CX)) Media
Converter will also generate a Far End Fault pattern in order to inform the device at the far end of the fiber pair
that a fault has occurred.
3.6
The SMI consists of two pins, management data clock (SDC) and management data input/output (SDIO). The
NINJA C/CX (ADM6992C/CX) is designed to support an SDC frequency up to 25 MHz. The SDIO line is bi-
directional and may be shared with other devices.
The SDIO pin requires a 1.5 K pull-up which, during idle and turnaround periods, will pull SDIO to a logic one state.
NINJA C/CX (ADM6992C/CX) requires a single initialization sequence of 35 bits of preamble following power-
up/hardware reset. The first 35 bits are preamble consisting of 35 contiguous logic one bits on SDIO and 35
corresponding cycles on SDC. Following preamble is the start-of-frame field indicated by a <01> pattern. The next
field signals the operation code (OP): <10> indicates read from management register operation, and <01>
indicates write to management register operation. The next field is the management register address. It is 10 bits
wide and the most significant bit is transferred first.
Table 11
Operation
Read
Write
During Read operation, a 2-bit turn around (TA) time spacing between the register address field and data field is
provided for the SDIO to avoid contention. Following the turnaround time, a 32-bit data stream is read from or
written into the management registers of the NINJA C/CX (ADM6992C/CX).
Figure 3
Data Sheet
Serial Management Interface (SMI) Register Access
SMI Read/Write Command Format
SMI Read Operation
Preamble
35”1”s
35”1”s
SFD
01
01
OP CHIPID[1:0]
10
01
2 bits CHIPID
2 bits CHIPID
25
Unused
00
00
Register
Address
6 bits Address
6 bits Address
TA Data
Z0
10
Function Description
Rev. 1.02, 2005-11-25
ADM6992C/CX
32 bits Data
Read
32 bits Data
Write
Ninja C/CX