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GS1531-CB View Datasheet(PDF) - Gennum -> Semtech

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Description
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GS1531-CB Datasheet PDF : 50 Pages
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GS1531 Data Sheet
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin
Number
Name
A1
LF
Timing
Analog
A2
VCO_VCC
–
A3
VCO_GND
–
A4, A5
VCO, VCO
Analog
A6, B5,
NC
–
B6, C1,
C4, C5,
C6, C7,
C8, D1,
D2, D3,
D4, D7,
D8, E1,
E2, E3,
E7, F2,
F3, F7,
G1, G2,
G3, G7,
H1, H2,
H3, H7,
J1, J2,
J3, J4
A7
PCLK
–
A8, E8, K8
IO_VDD
–
Type Description
Output
Output
Power
Output
Power
Input
–
Control voltage to external voltage controlled oscillator. Nominally +1.25V
DC.
Power supply for the external voltage controlled oscillator. Connect to pin
7 of the GO1555/GO1525*. This pin is an output.
Should be isolated from all other power supplies.
*For new designs use GO1555
Ground reference for the external voltage controlled oscillator. Connect to
pins 2, 4, 6, and 8 of the GO1555/GO1525*. This pin is an output.
Should be isolated from all other grounds.
*For new designs use GO1555
Differential inputs for the external VCO reference signal. For single ended
devices such as the GO1555/GO1525*, VCO should be AC coupled to
VCO_GND.
VCO is nominally 1.485GHz.
*For new designs use GO1555
No connect.
Input
Power
PARALLEL DATA BUS CLOCK
Signal levels are LVCMOS/LVTTL compatible.
HD 20-bit mode
PCLK = 74.25MHz or 74.25/1.001MHz
HD 10-bit mode
PCLK = 148.5MHz or 148.5/1.001MHz
SD 20-bit mode
PCLK = 13.5MHz
SD 10-bit mode
PCLK = 27MHz
Power supply connection for digital I/O buffers. Connect to +3.3V DC
digital.
30573 - 7 February 2008
6 of 50
 

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