IDT77V107L25PFI8 IDT, Integrated Device Technology Inc, IDT77V107L25PFI8 Datasheet - Page 17

• Manufacturer Part Number: IDT77V107L25PFI8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT77V107L25PFI8

• Data Rate: 25.6/51.2Mbps
• Number Of Channels: 1
• Type Of Atm Phy Interface: UTOPIA
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Pin Count: 100
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

LED Driver and HEC Status/Control Registers
Address:0x03
Low Byte Counter Register [7:0]
Address:0x04
High Byte Counter Register [15:8]
Address:0x05
Counter Select Register
Address:0x06
IDT77V107
7
6
5
4,3
2
1
0
Bit
[7:0] R
[7:0] R
7
6
5
4
3
2
1
0
Bit
Bit
Bit
R
R/W
R/W
R/W
R
R
R
—
—
—
—
W
W
W
W
Type
Type
Type
Type
Note: For proper operation, only one bit may be set in the Counter Select Register at any time.
0
0 = enable checking
0 = enable calculate &
replace
00 = 1 cycle
1 = empty
1
1
0x00
0x00
0
0
0
0
0
0
0
0
Initial State
Initial State
Initial State
Initial State
Provides low-byte of counter value selected via the Counter Select Register.
Provides high-byte of counter value selected via the Counter Select Register.
Reserved
Reserved
Reserved
Reserved
Symbol Error Counter
TxCell Counter
RxCell Counter Does not count HEC errored cells, even when bit 6 of the Master Control Register is cleared.
Receive HEC Error Counter
Reserved
Disable Receive HEC Checking (HEC Enable) When not set, the HEC is calculated on first 4 bytes of received
cell, and compared against the 5th byte. When set (= 1), the HEC byte is not checked.
Disable Transmit HEC Calculate & Replace When set, the 5th header byte of cells queued for transmit is not
replaced with the HEC calculated across the first four bytes of that cell.
RxREF Pulse Width Select
bit # 4
Transmit FIFO Status
TxLED Status
RxLED Status
0
0
1
1
0
1
0
1
3
RxREF active for 1 cycle of the recovered clock
RxREF active for 2 cycles of the recovered clock
RxREF active for 4 cycles of the recovered clock
RxREF active for 8 cycles of the recovered clock
0 = Cell Transmitted
0 = Cell Received
1 = TxFIFO empty
17 of 24
1 = Cell Not Received
1 = Cell Not Transmitted
Function
Function
Function
0 = TxFIFO not empty
Function
December 2004