z87001 ZiLOG Semiconductor, z87001 Datasheet - Page 43

• Manufacturer Part Number: z87001
• Description: Romless Spread Spectrum Cordless Phone Controller
• Manufacturer: ZiLOG Semiconductor

Zilog
RFTX_PWR_CTRL
Field
RFTX_POLARITY
RFTX_PWR_ON
RESERVED
RFTX_PWR_OFF
Notes:
DS96WRL0800
1. RFTX_PWR_ON, RFTX_PWR_OFF. Controls the PAON output pin, and thereby the external RF module’s transmitter.
2. Changes to these values take effect immediately.
3. To disable the transmitter continuously, clear TX_ENABLE in SSP_STATE.
The turn-on and off times are given in number of transmitted bit periods and are referenced to the transmit Frame Counter.
Only the 7 LSBits of the 9-bit value are programmable. The two MSBits have fixed values which depend on whether base
station or handset is selected. For RFTX_PWR_ON, the two bits are “00” on the base and “01” on the handset. For
RFTX_PWR_OFF, the two bits are “01” on the base and “10” on the handset.
Bank 2
Bit Position
f---------------
-edcba98--------
--------7-------
---------6543210
Table 27. Bank 2 Register Description
P R E L I M I N A R Y
EXT7
R/W
W
W
W
W
R
R
R
R
Data
xXh
xXh
0
1
ROMless Spread Spectrum Cordless Phone Controller
Controls the polarity of the PAON output pin
Returns 0
Active high
Active Low
Determines PAON output pin turn-on time
referenced to the transmit frame counter
Returns 0
Bits 6-0 of turn-on time (=(x modulo 128) -1)
Returns 0
No effect
Determine PAON output pin turn-off time
referenced to the transmit frame counter
Returns 0
Bits 6-0 of turn-off time (=(x modulo 128) -1)
Description
Z87001/Z87L01
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