L64777 A LSI Logic Corporation, L64777 A Datasheet - Page 29

• Manufacturer Part Number: L64777 A
• Description: Communications, DVB QAM Modulator
• Manufacturer: LSI Logic Corporation

Table 5
L64777 DVB QAM Modulator
Mnemonic
IREF1
IREF2
NT_OUT
OCLK
PCLK
PLL_MODE[1:0]
PLL_OUT_CS
QAM_I
QAM_In
QAM_Q
QAM_QN
RESET_n
SB_BASE[1:0]
SCAN_ENABLE
SCL
SCLK
SDA
L64777 Pin Description Summary (Cont.)
Description
Reference Current
Input
Reference Current
Input
Nand Tree
VCO Clock Output or
External Clock Input
Clock Input for PLL
Mode 2
Select PLL Mode
PLL Current Source
Positive DAC Output
I Channel
Negative DAC Output
I Channel
Positive DAC Output
Q Channel
Negative DAC Output
Q Channel
Chip Reset
Serial Bus Base
Address Selector
Scan Enable
Serial Control Line
Symbol Clock Output Output
Serial Data Access
Type
Analog Input
Analog Input
Output
Bidirectional
TTL input
Input w/Pulldown
3-state Current
Source
Analog Output
Analog Output
Analog Output
Analog Output
TTL Input
Input w/Pulldown
TTL Input
w/Pulldown
Input
(5 V-tolerant)
Bidirectional
(5 V-tolerant)
Drive
(mA)
–
–
4
–
–
–
4
–
–
–
–
–
–
–
4
4
4
Active
–
–
HIGH
LOW/
HIGH
HIGH
HIGH
3-state
–
–
–
–
LOW
HIGH
HIGH
HIGH
LOW/
HIGH
Open-
drain
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