HD155121F Datasheet, PDF (21/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

Serial Data Interface
HD155121F
CLK
SDATA
tcyc
tsule
MSB ^{tstup thld}
LSB
X7
X6
X5
X4
X3
X2
X1
X0
LE
twle
Figure 2 Three-Wire Bus Timing Diagram
Serial Data Interface Specifications (V_CC = 3 V, Ta = 25°C unless otherwise specified)
Item
Symbol Min
Typ
Max
Unit
Cycle time
tcyc
50
—
—
nsec
Setup time
tstup
10
—
—
nsec
Hold time
thld
10
—
—
nsec
LE setup time
tsule
25
—
—
nsec
LE width
twle
25
—
—
nsec
Note: 1. These values are not tested in mass production.
2. User can program the data for the PGA, while in any state.
Test Condition
Note
1
1
1
1
1
21