mt90823ap1 Zarlink Semiconductor, mt90823ap1 Datasheet - Page 24

• Manufacturer Part Number: mt90823ap1
• Description: 2048 X 2048 Channels Selectable Rate 2, 4, 8 Mbps 3.3 V Non-blocking Large Digital Switch Ldx
• Manufacturer: Zarlink Semiconductor

Test Data Register
As specified in IEEE 1149.1, the MT90823 JTAG Interface contains three test data registers:
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The MT90823 boundary scan register contains 118 bits. Bit 0 in Table 15 Boundary Scan Register is the first bit
clocked out. All tristate enable bits are active high.
The Boundary-Scan Register
The Boundary-Scan register consists of a series of Boundary-Scan cells arranged to form a scan path
around the boundary of the MT90823 core logic.
The Bypass Register
The Bypass register is a single stage shift register that provides a one-bit path from TDI to its TDO.
The Device Identification Register
The device identification register is a 32-bit register with the register contain of:
0000 0000 1000 0010 0011 0001 0100 1011
MSB
The LSB bit in the device identification register is the first bit clocked out.
Zarlink Semiconductor Inc.
LSB
MT90823
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Data Sheet