DS90UR905QSQ/NOPB National Semiconductor, DS90UR905QSQ/NOPB Datasheet - Page 35

• Manufacturer Part Number: DS90UR905QSQ/NOPB
• Description: IC SER/DESERIAL 24BIT 48LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of DS90UR905QSQ/NOPB

• Function: Serializer
• Data Rate: 1.82Gbps
• Input Type: Parallel
• Output Type: Serial
• Number Of Inputs: 24
• Number Of Outputs: 1
• Voltage - Supply: 1.71 V ~ 1.89 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-WFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(dec)
ADD
0
1
2
(hex)
ADD
0
1
2
Register Name
Ser Config 1
Device ID
De-Emphasis
Control
Bit(s)
3:2
6:0
7:5
3:0
TABLE 14. SERIALIZER — Serial Bus Control Registers
7
6
5
4
1
0
7
4
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FIGURE 33. Serial Control Bus — WRITE
FIGURE 32. Serial Control Bus — READ
Defa
(bin)
1101
000
000
000
ult
00
0
0
0
0
0
0
0
0
Function
Reserved
Reserved
VODSEL
RFB
CONFIG
SLEEP
REG
REG ID
ID[X]
De-E Setting
De-E EN
Reserved
35
Description
Reserved
Reserved
0: Low
1: High
0: Data latched on Falling edge of PCLK
1: Data latched on Rising edge of PCLK
00: Control Signal Filter Disabled
01: Control Signal Filter Enabled
10: DS90UR124, DS99R124 Mode
11: DS90C124 Mode
Note – not the same function as PowerDown (PDB)
0: normal mode
1: Sleep Mode – Register settings retained.
0: Configurations set from control pins
1: Configuration set from registers (except I2C_ID)
0: Address from ID[x] Pin
1: Address from Register
Serial Bus Device ID, Four IDs are:
7b '1101 001 (h'69)
7b '1101 010 (h'6A)
7b '1101 011 (h'6B)
7b '1101 110 (h'6E)
All other addresses are Reserved.
000: set by external Resistor
001: -1 dB
010: -2 dB
011: -3.3 dB
100: -5 dB
101: -6.7 dB
110: -9 dB
111: -12 dB
0: De-Emphasis Enabled
1: De-Emphasis Disabled
Reserved
30102039
30102038
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