saa6752hs NXP Semiconductors, saa6752hs Datasheet - Page 38

• Manufacturer Part Number: saa6752hs
• Description: Mpeg-2 Video And Mpeg-audio/ac-3 Audio Encoder With Multiplexer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
The identification register will load a component specific code during the CAPTURE_DATA_REGISTER state of the TAP
controller and this code can subsequently be shifted out. At board level this code can be used to verify component
manufacturer, type and version number. The device identification register contains 32 bits, numbered 31 to 0, where
bit 31 is the most significant bit (nearest to TDI) and bit 0 is the least significant bit (nearest to TDO); see Fig.14.
Table 12 BST instructions supported by the SAA6752HS
2004 Jan 26
handbook, full pagewidth
BYPASS
EXTEST
SAMPLE
CLAMP
IDCODE
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
INST
This mandatory instruction provides a minimum length serial path (1-bit) between TDI and TDO,
when no test operation of the component is required.
This mandatory instruction allows testing of off-chip circuitry and board level interconnections.
This mandatory instruction can be used to take a sample of the inputs during normal operation of
the component. It can also be used to preload data values into the latched outputs of the boundary
scan register.
This optional instruction is useful for testing, when not all ICs have BST. It addresses the bypass
register, while the boundary scan register is in external test mode.
This optional instruction will provide information on the components manufacturer, part number and
version number.
TDI
MSB
31
version
XXXX
code
4-bit
28 27
Fig.14 32 bits of identification code.
0010 1011 0110 0110
16-bit part number
E
M
S
38
DESCRIPTION
12
11
11-bit manufacturer
0000 0010 101
identification
1
LSB
0
1
MHC141
TDO
SAA6752HS
Product specification