GS1531 Data Sheet
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin
Name
Timing
Type
Description
Number
A1
LF
Analog
–
Output
Control voltage to external voltage controlled oscillator. Nominally +1.25V
DC.
A2
VCO_VCC
Output
Power
Power supply for the external voltage controlled oscillator. Connect to pin
7 of the GO1525. This pin is an output.
Should be isolated from all other power supplies.
A3
VCO_GND
VCO, VCO
NC
–
Analog
–
Output
Power
Ground reference for the external voltage controlled oscillator. Connect to
pins 2, 4, 6, and 8 of the GO1525. This pin is an output.
Should be isolated from all other grounds.
A4, A5
Input
–
Differential inputs for the external VCO reference signal. For single ended
devices such as the GO1525, VCO should be AC coupled to VCO_GND.
VCO is nominally 1.485GHz.
A6, B5,
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,
No connect.
J3, J4
A7
PCLK
–
Input
PARALLEL DATA BUS CLOCK
Signal levels are LVCMOS/LVTTL compatible.
HD 20-bit mode
HD 10-bit mode
SD 20-bit mode
SD 10-bit mode
PCLK = 74.25MHz or 74.25/1.001MHz
PCLK = 148.5MHz or 148.5/1.001MHz
PCLK = 13.5MHz
PCLK = 27MHz
A8, E8, K8
IO_VDD
–
Power
Power supply connection for digital I/O buffers. Connect to +3.3V DC
digital.
30573 - 4 July 2005
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GENNUM [ GENNUM CORPORATION ]
