-
Description
YTD439-S is a LSI that integrates in a single chip all the communication functions that are necessary for constructing an ISDN terminal with a built-in DSU. It has a built-in TD switch function that is necessary for controlling the connection of the B-channel data. By connecting an external CPU, memory, and CODEC, a terminal with a built-in DSU can be configured. In addition, YTD439-S has a function that reduces the power consumption by stopping the functions of unused blocks. This is effective for battery-driven terminals.
Specifications and features
- DSU block: Conforms to TTC Standards JT-I430 and JT-G961. It has LT (line termination) function and CT (circuit termination) function. DSU can be disconnected.
- S/T reference point driver/receiver block: Transition to the sleep state possible by setting an I/O register.
- CPU interface block: 8-bit or 16-bit data bus selectable. I/O access through registers.
- Layer 1 control block: Frame assembling and disassembling function. I430 TTL output pin.
- Layer 2 control block: Built-in LAPD protocol (supports four links). Call control and D-channel packet function.
- Layer 3 interface block: Message exchange through I/O access (large 1088-byte FIFO).
- B channel HDLC controller: Supports CRC-CCITT and CRC-32. 128k/64k/56k rate adaption.
- B channel transparent: Supports PIAFS 64k/32k. Flexible rate adaption function.
- B channel DATA FIFO: Transmission and reception: 128-byte FIFO × 2 channels.
- TD switch: Switch circuit for 8 channels of B channel data. 512 k to 2,048 kHz PCM highway.
- Others: Terminal block can be disconnected. Power can be cut off. Terminal block sleep mode. Power supply to the analog block: +5 V. Power supply to the digital block: +5 V or 3.3 V. 5 V tolerant I/O pin. 100-pin SQFP.
Application Scenarios
- Terminal adapter
- Remote router
- ISDN telephone
- ISDN home telephone
- ISDN Facsimile
-
Similar parts: 430483 , Click to view
-
Datasheet
-
Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
- View more
Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
- View more
-
Popular parts of the same kind
Additional Information
- Datasheet: Download YTD439-S
- Chipdatas Part: CD92-YTD439-S
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/05/21 04:00 +0800
Refund
-
- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
Related Products
-
E-STLC2500CTR - Brand New STMicroelectronics IC ChipsWFBGA -
CY7C68053A-56BA - Brand New Cypress Semiconductor IC ChipsBGA -
AR8035-AL1A-R - Brand New QCA IC ChipsBGA -
BL1117-ADC - Brand New Belling IC ChipsSOT-223 -
HM628512BLFP-7 - Brand New Nexperia IC ChipsSOP-32 -
BCM5325FKQMG - Brand New Broadcom IC ChipsQFP -
D431000AGW-70LL - Brand New NEC IC ChipsSOP -
HT46R003B - Brand New HOLTEK IC ChipsSOP-16 -
BCM2045KWBG - Brand New Broadcom IC ChipsBGA -
H26M52103FMR - Brand New Skhynix IC ChipsBGA
Payment Method
-
The fee is charged according to the rule of PayPal.
-
The fee is charged according to the rule of PayPal.
-
Western Union charge US$0.00 banking fee.
-
We recommend to use bank transfer for large orders to save on handling fees.
Shipping Tips
-
DHL(www.dhl.com)
$40 limited time offer. -
UPS(www.ups.com)
$40 limited time offer. -
FedEx(www.fedex.com)
$40 limited time offer. -
Registered Mail(www.singpost.com)
Free shipping without minimum order.
