saa569x NXP Semiconductors, saa569x Datasheet - Page 97

• Manufacturer Part Number: saa569x
• Description: Enhanced Tv Microcontrollers With On-screen Display Osd
• Manufacturer: NXP Semiconductors

Philips Semiconductors
25 IN-SYSTEM PROGRAMMING INTERFACE
A serial programming interface is available for late OTP
programming. The interface is based on the IEEE1149
(JTAG) standard, but only two instructions are utilized.
Table 44 shows which port pins are used for ISP.
Care should be taken during system design to ensure the
pins used for serial programming do not cause conflict with
the application circuit. It is advised to dedicate the port pins
(P2.1, P2.2, P2.3 and P2.4) to ISP, and not use them in
application.
Table 44 Port pins used for ISP
2002 May 06
Vertical Range
SMTHB
SMTH
RANGE1 to RANGE0
RANGEB1 to RANGEB0
P2.0
P2.1
P2.2
P2.3
P2.4
VPE
RESET
XTALIN
RESET (alternative)
Enhanced TV microcontrollers with
On-Screen Display (OSD)
REGISTER
PIN
smoothing on, on Page B (logic 1)
smoothing on, on Page A (logic 1)
additional two bits for display vertical offset
additional two bits for display vertical offset on Page B
EN
TCK
TMS
TDI
TDO
VPE
RESET
RESET
CLK
NAME
97
However, if it is necessary to use them in application then
they must be assigned as output.
The device is placed in ISP mode using the RESET pin.
Pin P0.2 must be held HIGH during ISP mode. Power to
the device during ISP may be sourced either from the
application or from an external source. Ground reference
between the programmer and the target should be
common.
For further details, refer to the “In-System Programming
Application Note: SPG/AN01008” .
FUNCTION
Enables JTAG operations (specific to SAA56xx)
Test clock
Test Mode Select
Test Data In
Test Data Out
9 V Programming Voltage
Device reset/mode selection
Device reset/mode selection
Clock 12 MHz
SAA567x; SAA569x
FUNCTION
Objective specification