LMH0340SQ/NOPB National Semiconductor, LMH0340SQ/NOPB Datasheet - Page 20

• Manufacturer Part Number: LMH0340SQ/NOPB
• Description: IC SERIALIZER/CBL DVR 48-LLP
• Manufacturer: National Semiconductor

Specifications of LMH0340SQ/NOPB

• Applications: Displays
• Interface: LVDS
• Voltage - Supply: 3.135 V ~ 3.465 V
• Package / Case: 48-LLP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMH0340SQ

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ADD
'h
11
12
13–1C
1D
1E-20
21
22
23
24
25
26
Name
DVB_ASI Idle_A
DVB_ASI Idle_B
Reserved
Device Type
Reserved
Mode
DVB_ASI Override In normal operation, the DVB_ASI mode is selected via the external pin. By setting the 0 bit in
Reserved
LVDS Clock Delay
Bypass
Reserved
Powerdown
Bits
When in DVB-ASI mode, idle characters are inserted into the datastream when there is no valid
data to transmit. The idle character default is K28.5 but if desired, that can be redefined via this
register pair.
7:0
DVB-ASI mode, idle character LSBs
7:2
1:0
Reading from this register will return an 8 bit value which indicates which product from the SER
family is being addressed
7:0
This register returns the mode that the device is operating in.
7:2
1:0
this register, the function of this pin is overridden, and the mode is set via register 21'h instead.
After setting this bit, a channel reset must be executed via reg 0x26h, bit 7
7:1
0
This register selects of the TXCLK delay adjust is enabled or bypassed.
7
6:0
Individual bits from this register can power down different parts of the SER – to place the part
into a low power standby mode, write a ‘0’ to this register.
7
6:0
Field
Reserved
Device
Reserved
Reserved
Reserved
channel reset
Powerdown
20
R/W
r/w
r/w
r
r/w
r/w
r/w
r/w
r/w
Default
BC'h
01'b
0'b
0'b
0'b
0x3Fh
Description
K28.5 Idle character used for DVB_ASI
K28.5 Idle character used for DVB_ASI
xx1xxx00 for the LMH0340
xx1xxx01 for the LMH0040
xx1xxx10 for the LMH0070
xx0xxx01 for the LMH0050
11 = DVB ASI mode
01,10, 00 = SDI mode
1: contents of register 21h will override
the DVB_ASI pin
0: Pin control
1: Bypasses TXCLK delay
0: Delay Enabled
Used to reset the channel, needed
when changing between DVB_ASI
mode and normal operating mode via
SMBus
for normal operation, write x011 1111b
to this register. For low power mode
write x100 0000b to the register.