AD9548/PCBZ Analog Devices Inc, AD9548/PCBZ Datasheet - Page 15

• Manufacturer Part Number: AD9548/PCBZ
• Description: Clock Generator Evaluation Board
• Manufacturer: Analog Devices Inc

Specifications of AD9548/PCBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Network Clock Generator/Synchronizer
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9548
• Kit Contents: Board
• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9548
• Primary Attributes: 62.5 ~ 450 MHz Output Frequency
• Secondary Attributes: SPI and I2C Compatible Control Port
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 21. Pin Function Descriptions
Pin No.
1, 6, 12, 77,
83, 88
2
3
4
5
7, 82
8
9
10
11
13
14, 15
16, 45, 46
17, 20, 25,
28, 51, 54
18
19
Mnemonic
DVDD
SCLK/SCL
SDIO
SDO
CS/SDA
DVDD3
TCLK
TMS
TDO
TDI
RESET
DVDD
NC
VSS
DACOUTP
DACOUTN
Input/
Output
I
I
I/O
O
I
I
I
I
O
I
I
I
O
O
O
SCLK/SCL
DACOUTN
DACOUTP
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND (VSS).
CS/SDA
DVDD3
RESET
AVDD3
AVDD3
DVDD
DVDD
DVDD
DVDD
DVDD
TCLK
SDIO
SDO
TMS
TDO
VSS
VSS
TDI
NC
10
12
13
14
15
16
17
18
19
20
21
22
11
Power
3.3 V CMOS
3.3 V CMOS
3.3 V CMOS
Power
3.3 V CMOS
Power
Ground
Differential
output
Differential
output
Pin Type
3.3 V CMOS
1
2
3
4
5
6
7
8
9
Figure 2. 88-Lead LFCSP Pin Configuration
Description
1.8 V Digital Supply.
Serial Programming Clock. Data clock for serial programming.
Serial Data Input/Output. When the device is in 4-wire mode, data is written via
this pin. In 3-wire mode, both data reads and writes occur on this pin. There is no
internal pull-up/pull-down resistor on this pin.
Serial Data Output. Use this pin to read data in 4-wire mode (high impedance in
3-wire mode). There is no internal pull-up/pull-down resistor on this pin.
Chip Select (SPI). Active low. When programming a device, this pin must be held
low. In systems where more than one AD9548 is present, this pin enables
individual programming of each AD9548 (in I
This pin has an internal 10 kΩ pull-up resistor but only in SPI mode.
3.3 V I/O Digital Supply.
JTAG Clock. Internal pull-down resistor; no connection if JTAG is not used.
JTAG Mode. Internal pull-up resistor; no connection if JTAG is not used.
JTAG Output. No connection if JTAG is not used
JTAG Input. Internal pull-up resistor; no connection if JTAG is not used.
Chip Reset. When this active high pin is asserted, the chip goes into reset.
This pin has an internal 50 kΩ pull-down resistor.
1.8 V DAC Decode Digital Supply. Keep isolated from the 1.8 V core digital supply.
No Connect.
Analog Ground. Connect to ground.
DAC Output. DACOUTP contains an internal 50 Ω pull-down resistor.
Complementary DAC Output. DACOUTN contains an internal 50 Ω pull-down
resistor.
Rev. A | Page 15 of 112
88-LEAD LFCSP
12mm × 12mm
(Not to Scale)
0.5mm PITCH
AD9548
TOP VIEW
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
AVDD3
REFBB
REFB
AVDD
REFAA
REFA
AVDD3
AVDD
TDC_VRT
TDC_VRB
NC
AVDD
VSS
SYSCLKP
SYSCLKN
VSS
AVDD
SYSCLK_LF
SYSCLK_VREG
AVDD3
NC
NC
2
C® mode, this is a serial data pin).
AD9548