MT90222 ZARLINK [Zarlink Semiconductor Inc], MT90222 Datasheet - Page 57
MT90222
Manufacturer Part Number
MT90222
Description
4/8/16 Port IMA/TC PHY Device
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.MT90222.pdf
(155 pages)
- Current page: 57 of 155
- Download datasheet (920Kb)
Unlike Single mode, the only clock format supported is ST-BUS mode when TxCK and TxSYNC are inputs. The data
rate is 8.192 Mb/s. A clock of 16.384 MHz is used and the Frame pulse indicates the first bit of the first time slot of
a frame of 128 time slots. The mapping registers of the 4 physical links are merged by bit-to-bit interleaving to form
a larger mapping register supporting up to 128 time slots.
This mode is selected in TDM TX Link Control (0x0600-0x060F) and TDM RX Link Control (0x0700-0x070F) by
the following settings. Note that all four links in a group must have the same settings.
4.4
Single mode, Wire-OR mode and Multiplexed mode are all dealing with framed data, that is, a frame pulse must be
present to give both byte and frame alignment. However, MT90222/3/4 also support a non-framed mode where only
a serial bit stream and clock are available for each link. Moreover, a wide range of data rate is supported by this
mode, which makes it particularly useful in DSL applications where the line rate may vary.
When used in Non-framed mode, RXSYNC must be de-asserted. For example, if RXSYNC is defined as active low
frame pulse (bit 0 cleared in TDM RX Link Control register), RXSYNC input pin must be tied to high. The same
applies to TXSYNC when it is an input pin.
Mapping registers must all be set to 0xFFFF in Non-framed mode. Serial clock rate and data rate must be the same.
Moreover, bit mode cell delineation (bit 10 in TDM RX Link Control registers) must be selected, and register 0x0741
must be written by 0x36.
Three minor modes are available in Non-framed mode, resulting to different data rate and link number.
4.4.1
In Non-framed mode, all links are able to run from 0 up to 2.5 Mb/s. On the transmit side, if the TXCK and TCSYNC
are programmed as inputs, TXSYNC must be disabled state, and the transmitter will be "free running" and will output
serial data continuously. If the TXSYNC is defined as output, a frame pulse is generated for every 256 TXCK cycles,
but can be ignored.
This mode is selected in TDM TX Link Control (0x0600-0x060F) and TDM RX Link Control (0x0700-0x070F) by
the following settings.
Non-Framed Mode
Data rate (bits 6:5) = 11
Multiplex mode (bits 4:3) = 10
Clock and Sync format (bit 2) = 1
Enable (bit 7) = 1
Cell delineation mode (bit 10 of TDM RX Link Control only) = 0
TX clock direction (bit 9 of TDM TX Link Control only) = 1
Data rate (bits 6:5) = 01
Multiplex mode (bits 4:3) = 00
Clock and Sync format (bit 2) = 0
Cell delineation mode (bit 10 of TDM RX Link Control only) = 1
Non-Framed Mode - 2.5 Mbps
Zarlink Semiconductor Inc.
MT90222/3/4
57
Data Sheet
Related parts for MT90222
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Zarlink Semiconductor Inc [TV IF PREAMPLIFIER]
Manufacturer:
Zarlink Semiconductor
Datasheet:
Part Number:
Description:
Satellite Channel Decoder
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Power Factor Controller
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
CMOS/SNOS NVSRAM HIGH PERFORMANCE 8 K x 8 NON-VOLATILE STATIC RAM
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Dual stage IF amplifier for cable tuners
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Synthesized Broadband Converter with Programmable Power
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Cable Tuner Front End LNA with AGC
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Front End Power Splitter with AGC
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
1.3GHz Dual Wideband Logarithmic Amplifier
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Wide Dynamic Range Image Reject MOPLL
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND PLL FM DETECTOR FOR SATELLITE TV
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LINEAR FM DETECTOR FOR SATELLITE TV
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LOG IF STRIP AMPLIFIER
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LOG IF STRIP AMPLIFIER
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet: