
HD49334AF/AHF
Rev.1.0, Apr 20, 2004, page 13 of 22
Serial Interface Specifications
DI 00 (LSB)
Low
DI 01
Low
Low
High
Low
Low
Resister 2
Resister 0
Resister 4 to 7
Test Mode (can not be used)
Resister 3
Resister 1
Low
Low
High
High
Low
Low to High
Low to High
High
High
DI 02
DI 03
DI 04
DI 05
DI 06
DI 07
DI 08
DI 09
DI 10
DI 11
DI 12
DI 13
DI 14
DI 15 (MSB)
HGstop-Hsel [1]
HGain-Nsel [0]
SHA-fsel [0] (LSB)
SHA-fsel [1] (MSB)
SHSW-fsel [0] (LSB)
SHSW-fsel [1]
SHSW-fsel [2]
SHSW-fsel [3] (MSB)
Clamp-level [3]
Clamp-level [2]
Clamp-level [1]
Low: Normal operation mode
High: Sleep mode
SLP
Low: Normal operation mode
High: Standby mode
STBY
Low: CDSIN input mode
High: ADCIN input mode
CSEL
Clamp-level [0] (LSB)
C-Bias off
Clamp-level [4] (MSB)
Gray code [0] (TEST1)
Gray code [1]
Ave_4H
HGstop-Hsel [0]
PGA gain setting (LSB)
PGA gain setting
PGA gain setting
PGA gain setting
PGA gain setting
PGA gain setting
Output mode setting (LINV)
Output mode setting (MINV)
Output mode setting (TEST0)
PGA gain setting
PGA gain setting (MSB)
OBPinv, OBP inversion
Low_PWR
SPinv,
SPSIG/SPBLK/PBLK inversion
Low: Reset mode
High: Normal operation mode
RESET
HGain-Nsel [1]
SHSW
frequency
character-
istics
switching
SHAMP
frequency
character-
istics
switching
Table 10
Serial Data Function List
Cannot
be used.
All low
Cannot
be used.
All low
Cannot
be used.
All low
High-speed
lead-in
cancellation
time
High-speed
lead-in
gain
multiplication
Cannot
be used.
Cannot be used.
Timing Specifications
Min
SCK
CS
SDATA
DI
00
DI
01
DI
02
DI
03
DI
04
DI
05
DI
06
DI
07
DI
08
DI
09
DI
10
DI
11
DI
12
DI
13
DI
14
DI
15
Latches SDATA
at SCK rising edge
Data is determined
at CS rising edge
t
INT
1
t
ho
t
su
t
INT
2
f
SCK
Figure 8 Serial Interface Timing Specifications
t
su
t
ho
t
INT
1, 2
f
SCK
50 ns
50 ns
50 ns
5 MHz
Max
Gray_test [2]
0
Gray_test [0]
Gray_test [1]
0
0
1
1
0
Notes: 1.
2.
3.
4.
5.
6.
7.
8.
2 byte continuous communications.
SDATA is latched at SCK rising edge.
Insert 16 clocks of SCK while CS is low.
Data is invalid if data transmission is aborted during transmission.
The gain conversion table differs in the CDSIN input mode and the ADCIN input mode.
STBY: Reference voltage generator circuit is in the operating state.
SLP: All circuits are in the sleep state.
This bit is used for the IC testing, and cannot be used by the user.
The use of this address is prohibited.
Circuit current and the frequency characteristic are switched.
Data = 0: 36 MHz guarantee
Data = 1: 25 MHz guarantee