z16c32 ZiLOG Semiconductor, z16c32 Datasheet - Page 61

• Manufacturer Part Number: z16c32
• Description: Iusc Integrated Universal Serial Controller
• Manufacturer: ZiLOG Semiconductor

CONTROL REGISTERS (Continued)
61
Z
ILOG
Address: 00111
D15 D14 D13 D12 D11 D10 D9
Note:
When software writes the value 1F to the LS byte of the Test Mode Control Register (TMCR),
and then reads the Test Mode Data Register (TMDR), current versions of the Z16C32 will return
hex 4453. Future revisions, if any, will return other values.
Figure 54. Test Mode Control Register (TMCR)
D8
D7
D6
P R E L I M I N A R Y
D5
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Tx FIFO (Read)
Null Address
High Byte of Shifters
CRC Byte 0
CRC Byte 1
Rx FIFO (Write)
Clock Multiplexer Outputs
CTR0 and CTR1 Counters
Clock Multiplexer Inputs
DPLL State
Low Byte of Shifters
CRC Byte 2
CRC Byte 3
Reserved
I/O and Device Status Latches
Internal Daisy Chain
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Rx Count Holding Register
Reserved
Reserved
Reserved
Reserved
4453H
Reserved
Reserved
Reserved
4453H
Reserved
PS97USC0200
Z16C32 IUSC
T est
Register
Address
™