there is no such thing as write address or read address in pbp there is only the address
there is an adress of 7 bits....then PBP is taking care for the Read or Write bit.

The following is from the manual of the MAX30102.

Name: RW address.png Views: 4233 Size: 7.7 KB

But in the program under the registers we are using the AE which is related to write address. Isnt it?

Code:
 ADDR = $ae     ; addr is  0x57 << 1