IDT77105L25TF8 IDT, Integrated Device Technology Inc, IDT77105L25TF8 Datasheet - Page 17

• Manufacturer Part Number: IDT77105L25TF8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT77105L25TF8

• Data Rate: 25.6Mbps
• Number Of Channels: 1
• Type Of Atm Phy Interface: UTOPIA
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Pin Count: 64
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

LED Driver and HEC Status/Control
LED Driver and HEC Status/Control
LED Driver and HEC Status/Control
LED Driver and HEC Status/Control
Address: 0x03
Address: 0x03
Address: 0x03
Address: 0x03
Low Byte Counter Register [7:0]
Low Byte Counter Register [7:0]
Low Byte Counter Register [7:0]
Low Byte Counter Register [7:0]
Address: 0x04
Address: 0x04
Address: 0x04
Address: 0x04
High Byte Counter Register [15:8]
High Byte Counter Register [15:8]
High Byte Counter Register [15:8]
High Byte Counter Register [15:8]
Address: 0x05
Address: 0x05
Address: 0x05
Address: 0x05
Counter Register Read Select
Counter Register Read Select
Counter Register Read Select
Counter Register Read Select
Note: Only one bit may set at any time for proper operation
Address: 0x06
Address: 0x06
Address: 0x06
Address: 0x06
Bit 7
Bit 6
Bit 5
Bit 4, 3
Bit 2
Bit 1
Bit 0
Bit [7:0]
Bit [7:0]
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Master Type Initial State
Master Type Initial State
Master Type Initial State
Master Type Initial State
IDT77105
R/W
R/W
R/W
R
R
R
R
R
—
—
—
—
W
W
W
W
0
0 = enable
0 = enable
0 = 1 cycle
1 = empty
0
0
0x00
0x00
—
—
—
—
0
0
0
0
Reserved
Disable Receive HEC Checking (HEC Enable)
When not set, TC calculates HEC byte on first 4 bytes of received cell, and compares value against 5th byte with this HEC
calculation result
Disable Xmit HEC Calculate & Replace
Directs TC not to calculate HEC on first 4 bytes of cell queued for transmit and replace 5th byte with this HEC calculation
result
RxRef pulse width select
bit # . 4
FIFO Status
TxLED Status 1 = Cell Transmitted 0 = Cell NOT Transmitted
RxLED Status 1 = Cell Received 0 = Cell NOT Received
Provides low-byte of counter value selected via register 0x06.
Provides high-byte of counter value selected via register 0x06.
Reserved
Reserved
Reserved
Reserved
Symbol Error Counter
TxCell Counter
RxCell Counter
Receive HEC Error Counter
0
0
1
1
3 .
0 RxRef active for 1 RxClk cycle
1 RxRef active for 2 RxClk cycles0
0 RxRef active for 4 RxClk cycles
1 RxRef active for 8 RxClk cycles
1 = TxFIFO empty
17 of 24
0 = TxFIFO not empty
Function
Function
Function
Function
September 11, 2000