TMS320VC5504 datasheet(124/128 Pages) TI

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6.19.2 JTAG Test_port Electrical Data/Timing

TCK

TDO

TDI

TMS

TMS320VC5504

Fixed-Point Digital Signal Processor

SPRS609A – JUNE 2009 – REVISED JULY 2009

www.ti.com

Table 6-48. JTAG ID Register Selection Bit Descriptions

BIT

NAME

DESCRIPTION

31:28

VARIANT

Variant (4-Bit) value. VC5504 value: 0000.

27:12

PART NUMBER

Part Number (16-Bit) value. VC5504 value: 0000 0000 1001 0111.

11-1

MANUFACTURER

Manufacturer (11-Bit) value. VC5504 value: 0000 0010 111.

LSB

LSB. This bit is read as a "1" for VC5504.

Table 6-49. Timing Requirements for JTAG Test Port (see Figure 6-33)

CVDD = 1.05 V

CVDD = 1.3 V

NO.

UNIT

MIN

MAX

tc(TCK)

Cycle time, TCK

tw(TCKH)

Pulse duration, TCK high

tw(TCKL)

Pulse duration, TCK low

tsu(TDIV-TCKH)

Setup time, TDI valid before TCK high

tsu(TMSV-TCKH)

Setup time, TMS valid before TCK high

th(TCKH-TDIV)

Hold time, TDI valid after TCK high

th(TCKH-TDIV)

Hold time, TMS valid after TCK high

Table 6-50. Switching Characteristics Over Recommended Operating Conditions for JTAG Test Port

(see Figure 6-33)

CVDD = 1.05 V

CVDD = 1.3 V

NO.

PARAMETER

UNIT

MIN

MAX

td(TCKL-TDOV)

Delay time, TCK low to TDO valid

Figure 6-33. JTAG Test-Port Timing

Peripheral Information and Electrical Specifications

124

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