MAC7200 datasheet(215/976 Pages) FREESCALE

Part #	MAC7200

Description	MAC7200 Microcontroller Family Reference Manual

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Nexus Integration

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

137

12. The IDCODE returned on the MAC72xx is hard-coded in the ARM7 core and is $4f1f0f0f.

11.4

Nexus Integration

On the MAC72xx, the following Nexus Low Power State (LPS) encodings are used:

$6 = 0110

Unused

$7 = 0111

HIGHZ

ARM920T

$8 = 1000

NEXUS_ACCESS

Nexus

$9 = 1001

CLAMPZ

ARM920T

$A = 1010

Unused

$B = 1011

Unused

$C = 1100

INTEST

ARM91

$D = 1101

Unused

$E = 1110

IDCODE

ARM7/ARM9

$F = 1111

BYPASS

ARM7/ARM9

1. The INTEST IR encoding is used to load/unload values into the six configuration registers (“Scan

Chains”) built into the MAC72xx:

Bit

Definition

Not Used

1–2

ARM7/EICE

Not Used

PTI Scan Chain 4

PTI Scan Chain 5

PTI Scan Chain 6

PTI Scan Chain 7

Table 11-9. Nexus LPS Encodings

Mode

ext_lps

Normal

ext_lps[2:0] = 3’b000

Stop

ext_lps[0] = 1

Doze

ext_lps[1] = 1

Debug

ext_lps[2] = 1

Table 11-8. JTAG TAP Controller IR Register Encodings (Continued)

IR Encoding

Function

Used By

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