peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 204

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Semiconductor Group
2.15.6
Address: 322
µP access mode: read
Reset value: 00
VNR3…0
2.16
The DOC provides a complete boundary scan support according to IEEE Std. 1149.1
specification for a cost effective board testing.
It consists of:
• Test access port controller (TAP)
• Four dedicated pins: JTCLK, TMS, TDI, TDO
• Tri-state of DOC output lines for board tests in production
• 32-bit DOC ID Register
All DOC-pins except the power supply pins (
external quartz clock pins (CLK40-XI, CLK40-XO), are included in the boundary scan.
Depending on the pin functionality, one, two or three boundary scan cells are provided.
A BSDL (Boundary Scan Description Language) file for the DOC is available.
2.16.1
Table 2-37 Boundary Scan Cell Types
Pin Type
Input
Output
I/O
When the TAP-controller is in the appropriate mode data is shifted into/out of the
boundary scan via the pins TDI/TDO using the 6.25-MHz clock on pin TCK.
The ELIC-pins are included in the following sequence in the boundary scan.
bit 7
unused
Version Number Register (VNR)
Boundary Scan Support (JTAG)
Boundary Scan
unused
H
DOC version number.
V1.1
V2.1
Each unused bit will be read as ‘0’.
H
unused
0000
0001
Number of Boundary
Scan Cells
1
2
3
unused
2-158
V
VNR3
DD
,
V
DDP
), the ground pins (
Functional Block Description
VNR2
Usage
Input
Output, enable
Input, output, enable
VNR1
PEB 20560
V
SS
bit 0
) and the
VNR0
2003-08