MT90222AG Zarlink Semiconductor, MT90222AG Datasheet - Page 54
![no-image](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_sml.jpg)
MT90222AG
Manufacturer Part Number
MT90222AG
Description
Description = 4 Port Ima & TC PHY For T1, E1 And DSL ;; Package Type = N/a ;; No. Of Pins =
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT90222AG.pdf
(155 pages)
- Current page: 54 of 155
- Download datasheet (2Mb)
(F-bit and 24 time slots), Generic 2.048MHz mode (32 time slots), and ST-BUS mode (32 time slots).
Mapping registers are used to determine when a time slot is used to carry the ATM traffic. There are two 16-bit
mapping registers for each TDM TX and for each TDM RX links. Each bit of the 2 registers (total of 32 bits) controls
one time slot. A bit value of 1 corresponds to an active time slot. A value of 0 corresponds to an inactive time slot
and the output is in High Impedance mode for that time slot. The TDM TX link is independent of the TDM RX link
and can have different mapping (using different time slots and optionally a different number of time slots).
Fractional T1/E1 and nx64 channel modes are implemented by programming bits in the mapping registers to enable
the use of the required time slots.
4.1.1
This is also known as T1 generic mode. In this mode, data rate is 1.544 Mb/s, clock is 1.544 MHz and frame pulse
is 8 KHz. A frame is 193 bits long and a frame pulse is present (either generated or accepted as input). The first bit,
indicated by the frame pulse, is not used to carry any useful information; it is in high impedance on Tx link and is
ignored on Rx link. The 24 time slots (192 bits) are controlled by the lowest 24 bits of the mapping register associated
with a link. Fractional T1 is supported by activating (selecting) any of the first 24 time slots defined in the mapping
register.
This mode is selected in TDM TX Link Control (0x0600-0x060F) and TDM RX Link Control (0x0700-0x070F) by
the following settings.
4.1.2
This is used for generic nx64 connections, where n can be any number from 1 to 32. In this mode, data rate is 2.048
Mb/s. A clock of 2.048 MHz is used and the Frame pulse is indicating the first bit of the first time slot of a frame of
32 time slots. The mapping registers are used to determine the number of time slots used and their position in the
frame. This enables a direct interface to existing T1 or E1 framers and opens up the option to interface to generic
nx64 devices. Fractional T1/E1 is supported as well by selecting the time slots that are used to carry ATM traffic.
Note: Both frame pulse polarity and clock edge are programmable.
Data rate (bits 6:5) = 00
Multiplex mode (bits 4:3) = 00
Clock and Sync format (bit 2) = 0
Cell delineation mode (bit 10 of TDM RX Link Control only) = 0
Single mode - Generic 1.544MHz
Single mode - Generic 2.048MHz
T1 Frame
Bit Cells
at DSTx0-15
Serial Bit
Stream
TXSYNC
TXCK
RXSYNC
RXCK
Figure 11 - Single mode - Generic 1.544 MHz
Bit Cell
bit 193
Zarlink Semiconductor Inc.
MT90222/3/4
High Impedance
54
Unused or
bit 1
Bit Cell
bit 2
...
...
...
...
...
Data Sheet
Related parts for MT90222AG
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![SL1430](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Zarlink Semiconductor Inc [TV IF PREAMPLIFIER]
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT8980DC](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
256 x 256 Channels (8 TDM Streams @ 2.048Mb/s) Non-blocking Digital Switch (DX)
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT8981DE](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MV3508](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MV1822DIG](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![SP8853B](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MV1820FCG](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Video Programme Delivery Control Interface Circuit
Manufacturer:
Zarlink Semiconductor
Datasheet:
![SP8719](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
SP8719520MHz LOW CURRENT TWO-MODULUS DIVIDERS
Manufacturer:
Zarlink Semiconductor
Datasheet:
![ML922](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
REMOTE CONTROL RECEIVER
Manufacturer:
Zarlink Semiconductor
Datasheet:
![SP4982](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
25GHz 8192 PRESCALER
Manufacturer:
Zarlink Semiconductor
Datasheet:
![SP4740](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
13GHz 4256 PRESCALER WITH LOW CURRENT AND LOW RADIATION
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT8980DP](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT3171BE](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT88E45AS](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet:
![MT8952BE](/images/manufacturer_photos/0/7/727/zarlink_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Zarlink Semiconductor
Datasheet: