TDA8961 Philips Semiconductors, TDA8961 Datasheet - Page 27

• Manufacturer Part Number: TDA8961
• Description: ATSC/NTSC digital TV front-end chipset
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Notes
1. The system clock signal is supplied by either an external 12 MHz crystal or another device such as the TDA8980
2. When used for parallel format, the frequency of PDOCLK is 3 MHz.
3. See the timing measurement conditions in Fig.12.
4. This is calculated by multiplying 188 bytes (the length of a packet) by the PDOCLK clock cycle period.
5. See the timing measurement conditions in Fig.13.
6. When used for serial format, the frequency of PDOCLK is 27 MHz.
7. This is calculated by multiplying 188 bytes (the length of a packet) by the PDOCLK clock cycle period, multiplied by 8.
8. C
2000 May 19
I
f
t
t
t
t
t
t
t
t
t
t
t
C
JTAG interface (pins TDO, TDI, TCK, TMS and TRST); see Fig.14
t
t
t
Reset (pin RST_AN)
t
2
SCL
BUF
HD;STA
LOW
HIGH
SU;STA
SU;STO
HD;DAT
SU;DAT
SP
r
f
d(TCK-TDO)
su(i)(TCK)
h(i)(TCK)
su(PO)L
C-bus (pins SDA and SCL); see Fig.15
b
ATSC Digital Terrestrial TV
demodulator/decoder
SYMBOL
generating a stable 12 MHz clock signal.
b
= total capacitance of one bus line in pF.
SCL clock frequency
bus free time between a STOP and
START condition
hold time for a repeated START
condition; after this period the first
clock pulse is generated
LOW period of the SCL clock
HIGH period of the SCL clock
set-up time for a repeated START
condition
set-up time for STOP condition
data hold time
data set-up time
pulse width of spikes which must
be suppressed by the input filter
rise time of both SDA and SCL
signals
fall time of both SDA and SCL
signals
capacitive load for each bus line
pin TCK to TDO valid delay
input set-up time to TCK
input hold time from TCK
power-on set-up time LOW
PARAMETER
note 8
CONDITIONS
27
0
1.3
0.6
1.3
0.6
0.6
0.6
0
100
tbf
20 + 0.1C
20 + 0.1C
2
10
2
23
MIN.
b
b
TYP.
Objective specification
400
0.9
tbf
300
300
400
10
MAX.
TDA8961
kHz
ms
ms
ms
ms
ms
ms
ms
ns
ns
ns
ns
pF
ns
ns
ns
ns
UNIT