tza1032 NXP Semiconductors, tza1032 Datasheet - Page 7

• Manufacturer Part Number: tza1032
• Description: Laser Driver And Controller Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
6
2002 May 06
V
V
V
V
V
IRQ
OPC
I2C_A0
V
V
V
V
V
V
CLKN
CLKP
DATAP
DATAN
V
V
REFH
REFL
CFS
DD2
DD3
SSD3
SS
DDD3
DDD1
SSD1
SSA1
SSD4
DDD4
DDA1
DDA2
SSA2
Laser driver and controller circuit
SYMBOL
PINNING
PAD
14
15
16
17
18
19
21
22
23
24
25
26
27
30
31
32
33
1
2
3
4
8
TYPE
O
O
O
O
P
P
P
P
P
P
P
P
P
P
P
P
P
I
I
I
I
I
I
laser driver power supply
laser driver power supply
IC digital ground
laser driver ground
IC digital power supply
interrupt request; digital output (open drain sink). IRQ is an active LOW
interrupt service request output line to the microprocessor. This line is set
(made LOW) by internal laser driver events and is cleared (made HIGH) when
a register in the laser driver is read via I
OPC strobe; digital input with pull-down resistor. The system controller during
OPC issues the OPC (strobe) signal. This signal tells the laser driver that a
step in a set point value should be made during OPC mode.
digital input pin with pull-down resistor whose function is to select which
I
used in parallel on one I
pin for test mode.
IC digital power supply
IC digital ground
IC analog ground
not connected
IC digital power supply
IC analog power supply
clock pulse; analog current input. The anti-phase clock signal is used together
with CLKP to allow balanced transmission.
clock pulse; analog current input. Provides clock reference for EFMplus data
plus the clock reference for the internal PLL.
data input; analog current input. This is the input for the run length variable
code (in non-return to zero form) from which the laser driver knows which laser
pulses to generate.
data input; analog current input. The anti-phase data signal (CLKN) used
together with DATAN to allow balanced transmission.
IC analog power supply
IC analog ground
band-gap reference output (for external smoothing capacitor)
band-gap ground connection (for external smoothing capacitor)
capacitor forward sense; analog connection for external smoothing capacitor.
An external capacitor of 560 pF combined with an internal resistor of 70 k
can be used to create a RC filter for the FS input before the ADC unit in order
to prevent slew-rate effects. This capacitor is placed between this pin and
REFL.
2
C-bus address range applies to the IC. This allows two laser drivers to be
7
2
C-bus. This pin is also used as test mode selection
DESCRIPTION
2
C-bus.
Preliminary specification
TZA1032