z02201 ZiLOG Semiconductor, z02201 Datasheet - Page 41

• Manufacturer Part Number: z02201
• Description: Z02201 V.22bis Data Pump With Integrated Afe
• Manufacturer: ZiLOG Semiconductor

Table 20. Modem Data Pump Word Definitions (Continued)
PS000904-0107
Register & Address
(hex)
Default
Value
Function and Explanation
b7
b6
b5
b4
b3
b0–2 TXCTRL Transmitter Control. Set TXCTRL to control the
SB1DET–Scrambled Binary 1 Detected (1200 bps or
2400 bps). Debounced through 30 ms.
S1DET–S1 Detected. Debounced through 27 ms
USB1DET–Unscrambled Marks Detected (1200 bps)
SB0DET–Scrambled Binary 0 Detected (1200 bps or
2400 bps)
V22bis Force 16 Way Decisions.
output of the data pump, using the table below as a guide. The
default frequency for the transmitted tone (TXCTRL is 7) is
2225 Hz, and may be changed after setting TXCTRL by
changing ToneGenA appropriately. The tone level is controlled
by TxLevel.
Value
0
1
2
3
4
5
6
7
Value
0
1
2
5
7
V.22/Bell 212A/V.22bis
Sequence Transmitted
Silence: squelch transmitter
Transmit unscrambled binary 1 at 1200 bps
Transmit S1 signal
Transmit scrambled binary 1 at 1200 bps
Transmit scrambled binary 1 at 2400 bps
Begin V.22, or Bell212A, 1200 bps data mode
Begin V.22bis 2400 bps data mode
Transmit tone. The default frequency for the
transmitted tone is 2225 Hz, and may be
changed after setting TXCTRL to 7 by changing
ToneGenA approximately. The tone level is
controlled by TxLevel.
FSK (V.21/ Bell 103/ V.23) Sequence
Transmitted
Silence: squelch transmitter
Transmit marks (binary 1)
Transmit spaces (binary 0)
Begin FSK Data Mode
Transmit tone. Set the frequency to be
transmitted by changing ToneGenA after setting
TXCTRL is 7. The tone level is controlled by
TxLevel.
V.22BIS Data Pump with Integrated AFE
Z02201
37