TDA18218HN 데이터 시트보기 (PDF) - NXP Semiconductors.
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TDA18218HN Datasheet PDF : 25 Pages
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NXP Semiconductors
TDA18218HN
DVB-T Silicon Tuner IC
9.2 I2C-bus address selection
The programmable module address bits MA[1:0] allow up to four tuners to be addressed
in one system. Bits MA[1:0] are programmed by applying a specific voltage (VAS) to pin
AS. The relationship between the status of bits MA[1:0] and the voltage applied to pin AS
is shown in Table 5.
Table 5. Address byte 1 bit descriptions
Legend: * power-on reset value.
Bit
Symbol
Access Value
7 to 3 -
R/W
1 1000*
2 to 1 MA[1:0]
R/W
00
01
10
11
0
R/W
R/W
0
1
Description
must be set to 1 1000
programmable address bit value set with VAS
VAS = 0 V to 0.1 × VCC
VAS = 0.2 × VCC to 0.3 × VCC
VAS = 0.4 × VCC to 0.6 × VCC
VAS = 0.9 × VCC to VCC
write mode
read mode
Example: MA[1:0] = 00, R/W = 0, full module address = 1100 0000 (C0h).
Table 6. Address byte 2 bit descriptions
Legend: * power-on reset value.
Bit
Symbol
Access
Value
7 to 6 -
R/W
00*
5 to 0 AD[5:0]
R/W
-
Description
must be set to 00
programmable address bits of the first
programming byte
9.2.1 Device type address ID
Table 7. ID byte bit descriptions
Legend: * power-on reset value.
Address Register
Bit
00h
ID byte
7
6 to 0
Symbol
-
ID[6:0]
Access Value
R
1*
R
100 0000*
Description
must be 1
TDA18218HN device type address
9.3 Crystal buffer output
TDA18218HN embeds a Xtal oscillator and a buffer to drive another IC. The buffer can be
configured through register XTOUT (I2C-bus sub address 19h). This buffer has been
designed to be AC coupled. This output can be used in differential or sinusoidal mode
(using XTO_N and XTO_P pins) or in asymmetrical or square mode (just leaving one pin
open).
It should be noted that TDA18218HN specification refers to differential output with no
load.
TDA18218HN_1
Product data sheet
Rev. 01 — 8 July 2009
© NXP B.V. 2009. All rights reserved.
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