pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 759

• Manufacturer Part Number: pnx1700
• Description: Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
4.1 Register Summary
JTAG Virtual Registers
There are two virtual registers, TM_DBG_IFULL_IN and TM_DBG_OFULL_OUT:
Table 4: Register Summary
Offset
0x06 1000
0x06 1004
0x06 1008
0x06 100C
0x06 1FE0
0x06 1FE4
0x06 1FE8
0x06 1FEC TM_DBG_N_INT_SET
0x06 1FF0
0x06 1FF4
0x06 1FF8
0x06 1FFC
•
•
•
and writable via JTAG. Writing 0 to TM_DBG_CTRL2.ifull via JTAG is a
‘remember’ operation i.e., TM_DBG_CTRL2.ifull retains it previous state. Writing
1 to TM_DBG_CTRL2.ifull posts a TM5250 interrupt on hardware line 49.
The TM_DBG_CTRL1.sleepless bit has no longer a function. However it still can
be read and written to by the PNX17xx Series CPU via load/store operations and
by the debugger front-end running on a host by scan in/out.
The first virtual register TM_DBG_IFULL_IN connects the registers
TM_DBG_CTRL2.ifull and TM_DBG_DATA_IN in series. Likewise, the virtual
register TM_DBG_OFULL_OUT connects TM_DBG_CTRL1.ofull and
TM_DBG_DATA_OUT in series.
The reason for the virtual registers is to shorten the time for scanning the
TM_DBG_DATA_IN and TM_DBG_DATA_OUT registers. Without virtual
registers, one must scan in an instruction to select TM_DBG_DATA_IN, scan in
data, scan an instruction to select TM_DBG_CTRL register and finally scan in the
control register. With virtual register, one can scan in an instruction to select
TM_DBG_IFULL_IN and then scan in both control and data bits. Similar savings
can be achieved for scan out using virtual registers.
Symbol
TM_DBG_N_DATA_IN
TM_DBG_N_DATA_OUT
TM_DBG_N_CTRL1
TM_DBG_N_CTRL2
TM_DBG_N_INT_ST
TM_DBG_N_INT_EN
TM_DBG_N_INT_CLR
Reserved
TM_DBG_N_POWER_DOWN
Reserved
Module ID
Rev. 1 — 17 March 2006
Description
Input register for data coming from the JTAG
Output register for data going to the JTAG
Control register 1 for output data
Control register 2 for input data
Interrupt Status Register
Interrupt Enable Register
Interrupt Clear Register
Interrupt Set Register
Powerdown Register
Module Identification Register
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Chapter 24: TM5250 Debug
PNX17xx Series
24-9