DS26514GN+ Maxim Integrated Products, DS26514GN+ Datasheet - Page 78

• Manufacturer Part Number: DS26514GN+
• Description: IC TXRX T1/E1/J1 4PORT 256-CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS26514GN+

• Number Of Drivers/receivers: 4/4
• Protocol: Ethernet
• Voltage - Supply: 3.14 V ~ 3.47 V
• Mounting Type: Surface Mount
• Package / Case: 256-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 9-18. HDLC Message Transmit Example
9.10.3 HDLC-256 Controller
This device has an enhanced HDLC controller that can be mapped into up to 32 time slots, or Sa4 to Sa8 bits (E1
Mode) or the FDL (T1 Mode). This HDLC controller has a 256-byte FIFO buffer in both the transmit and receive
paths. The user can select any specific bits within the time slot(s) to assign to the HDLC-256 controller, as well as
specific Sa bits (E1 Mode)
Rev: 101608
Work Another Process
Loop N
No Action Required
A
(THC1,THC2,THBSE,THFC)
Push Message Byte
into Tx HDLC FIFO
Configure Transmit
Verify TLWM Clear
HDLC Controller
HDLC Controller
Reset Transmit
N = TFBA[6..0]
Enable TLWM
Interrupt and
Read TFBA
Last Byte of
Message?
Interrupt?
(THC.5)
TLWM
(THF)
NO
YES
Disable TMEND Interrupt
Prepare New
Message
NO
YES
A
NO
Disable TMEND Interrupt
Enable TMEND
Resend Message
Push Last Byte
into Tx FIFO
Read TUDR
Set TEOM
TUDR = 1
Interrupt?
Status Bit
(THC1.2)
Interrupt
TMEND
DS26514 4-Port T1/E1/J1 Transceiver
YES
YES
NO
A
78 of 305