SP5730 Datasheet, PDF (5/12 Pages) Mitel Networks Corporation – 1.3GHz Low Phase Noise Frequency Synthesiser

Datasheet SP5730
Table 3 - Write data format (MSB transmitted first)
MSB
Address
1
1
0
0
0
Programmable divider 0
2¹⁴
2¹³
2¹²
2¹¹
Programmable divider 2⁷
2⁶
2⁵
2⁴
2³
Control data
1
T1
T0
R4
R3
Control data
C1
C0
RE
RS
P3
Key to Table 3.
A
Acknowledge bit
MA1, MA0 Variable address bits (see Table 5)
2¹⁴-2⁰
Programmable division ratio control bits
R4-R0
Reference division ratio select (see Table 2)
C1, C0
Charge pump current select (see Table 7)
RE
Reference oscillator output enable
RS
REF/COMP output select when RE=1 (see Table 8)
T1-T0
Test mode control bits (see Table 6)
P3-P0
P3, P2, P1 and P0 port output states
MA1
2¹⁰
2²
R2
P2
MA0
2⁹
2¹
R1
P1
LSB
0
2⁸
2⁰
R0
P0
A Byte 1
A Byte 2
A Byte 3
A Byte 4
A Byte 5
Table 4 - Read data format (MSB transmitted first)
MSB
Address
1
1
0
0
Status byte
POR FL
0
0
Key to table 4,
A
Acknowledge bit
MA1, MA0 Variable address bits (see Table 5)
POR
Power On Reset indicator
FL
Phase lock flag
LSB
0
MA1 MA0
1
A Byte 1
0
0
0
0
A Byte 2
Table 5 - Address selection
MA1 MA0 Address input voltage level
0
0
0 to 0·1V_CC
0
1 Open circuit
1
0
0·4V_CC to 0·6V_CC *
1
1
0·9V_CC to V_CC
* Programmed by connecting a 15kΩ resistor from pin 10 to V_CC
Table 7 - Charge pump current
C1 C0
Min.
Current (µA)
Typ.
00
01
10
11
±116
±247
±517
±1087
±155
±330
±690
±1450
Max.
±194
±412
±862
±1812
Table 6 - Test modes
RE•RS T1 T0
Test mode description
0 0 0 Normal operation
1
0 0 Normal operation, P0 = f_PD/2
X 0 1 Charge pump sink*, FL = ‘0’
X 1 0 Charge pump source*, FL = ‘0’
X 1 1 Charge pump disabled*, FL = ‘1’
* Clocks need to be present on crystal and RF inputs to enable
charge pump test modes and to toggle Status byte bit FL.
X = don’t care
Table 8 - REF/COMP output
RE RS
REF/COMP output
0 X High impedance
1 0 f_REF selected
1 1 f_COMP selected
X = don’t care
5